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RI bureau of minesreport of investigations 5950

BITUMINOUS COAL DEPOSITSOF THE MATANUSKA COALFIELD,ALASKA: CENTRAL AND WESTERNPARTS, WISHBONE DISTRICT

By Robert S. Warfield

UNITED STATES DEPARTMENT OF THE INTERIOR

BUREAU OF MINES

1962

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BITUMINOUS COAL DEPOSITSOF THE MATANUSKA COALFIELD,ALASKA: CENTRAL AND WESTERNPARTS, WISHBONE DISTRICT

By Robert S. Warfield

+ * * * * * * , * »* report of investigations 5950

UNITED STATES DEPARTMENT OF THE INTERIORStewart L. Udall, Secretary

BUREAU OF MINESMarling J. Ankeny, Director

.

This publication has been cataloged as follows:

I

Warfield, Robert S

Bituminous coal deposits of the Matanuska coalfield, Alaska:central and western parts, Wishbone district. [Washington]U.S. Dept. of the Interior, Bureau of Mines [1962]

ii, 190 p. illus., maps, tables. 26 cm. (U.S. Bureau of Mines.

Report of investigations, 5950)

1. Bituminous coal - Alaska. (Series)

TN23.U7 no. 5950 622.06173

U.S. Dept. of the Int. Library.

CONTENTS

Page

Summary and conclusions.....................................Introduction .............................................Acknowledgments..........................................Location and accessibility...................................Topography. .................................................Climate....................................................Vegetation................................................History....................... ...........::......

Doherty mine...........................................Baxter mine ................................. ..........Eska mine ............................ .........................Evan Jones mine . .......................................Rawson mine.................. .........................Premier mine.................. ..............

Matanuska Center Mine..................................Wishbone Hill mine.....................................Buffalo mine............................................Knob Creek Coal Co. ...................................

Production......................... ........................Geology. ........ .................... ......

Work by the Bureau of Mines....................................Investigations before 1949..............................Central part of Wishbone Hill district.................

Drill holes WH-1 through WH-8 .....................Drill holes WH-9 through WH-13... ..................Drill hole WH-14...................................

Western part of Wishbone Hill district.................North limb........................................

Drill holes MC-1 through MC-7.................Drill hole P-1.................................

Dragline trenching: Vicinity of old Premiermine workings................................

South limb...............................................

Drill holes MC-8 through MC-10...................Drill holes MC-11 and MC-16................Drill holes MC-12 through MC-15, and MC-17....Drill hole MC-18..............................

Reserves................... ......... ..........

Estimates...... ....................

Character and quality..............................

12233456666777888891012121313141919212527

282929303132323234

Appendix..... ... . ...................... ........ 37Logs of drill holes, central part of district............ 38Logs of drill holes, western part of district ........... 11

Contracts...................................... ........ 189Core drilling ..................................... 189Churn drilling .................................... 189

CONTENTS (Con.)

Page

Tractor rental .................................. 190Dragline trenching ............................................ 190

ILLUSTRATIONS

Fig.

1. Index map of Alaska................................... 42. Location map, Wishbone Hill district................... 53. Plan, central part of Wishbone Hill district .......... Pocket4. Sections A-A, B-B, and C-C, drill holes WH-1 through

WH-13 ....................................... ......... 185. Section through drill hole WH-14....................... 206. Plan, western part of Wishbone Hill district .......... Pocket7. Sections D-D and E-E, drill holes MC-1 through MC-10... 268. Section through drill hole P-l......................... 289. Section G-G, drill holes MC-11 and MC-16 ................. 31

10. Section F-F, drill holes MC-12 through MC-15, andMC-17............................................ .. 32

11. Section through drill hole MC-18 ...................... 33

TABLES

1. Coal production from the Wishbone Hill districtthrough 1959......................................... 9

2. Summary of drill-hole data, central part of WishboneHill district ........................................ 15

3. Summary of drill-hole data, western part ofWishbone Hill district ............................... 22

4. Estimated coal reserves remaining in central andwestern parts of Wishbone Hill district.............. 36

5. Analyses of diamond-drill core samples, central part ofthe district .................................... ... 175

6. Analyses of diamond-drill core samples, western part ofthe district........ .......... 0 ....... 182

BITUMINOUS COAL DEPOSITS OF THE MATANUSKA COALFIELD, ALASKA:CENTRAL AND WESTERN PART, WISHBONE HILL DISTRICT 1

by

Robert S. Warfield 2

SUMMARY AND CONCLUSIONS

The Federal Bureau of Mines and U.S. Geological Survey conducted explora-tory investigations and geologic mapping in the Wishbone Hill district of theMatanuska coalfield almost continuously from 1942 through 1958. These investi-gations delineated reserves of high-volatile bituminous coal necessary tosupply the rapidly expanding military and civilian requirements in the Anchor-age area. This report describes the program conducted by the Bureau of Minesfrom 1949 through 1958, and briefly summarizes previous investigations, theresults of which have already been published.

The coal-bearing structure on both the north and south limbs of theprominent Wishbone Hill syncline was explored by 8,719 feet of churn drillingand 25,460 feet of diamond-core drilling. A total of 33 holes were drilledranging in depth from 60 to 2,114 feet. To supplement the drilling opera-tions, bulldozer and dragline trenching were undertaken at key locations; about25,000 cubic yards of dragline trench were excavated in the vicinity of the oldPremier mine.

The investigation proved existence of the Jonesville coal group in thevicinity of the Buffalo mine, provided additional information regarding thenature of the synclinal structure (including a more accurate location of theaxis), and determined the character and quality of the coal over a much largerarea than previously explored. Because of the additional drill-hole data, coalreserve estimates in the vicinity of the Buffalo, Baxter, and Premier mineswere increased and some reserves previously classed as "inferred" were reclassi-fied as "indicated".

The intergraded coal-bearing formations of the Wishbone Hill district havebeen subjected to faulting and folding in varying degrees of intensity. Ex-treme variations of bedding characteristics are prevalent within relativelyshort distances. The resultant complex geology makes correlation of drillingresults extremely difficult, and markedly limits the extent to which data gained

1 Work on manuscript completed November 1960.

Mining engineer, Alaska Office of Mineral Resources, Bureau of Mines,Juneau, Alaska.

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from any given point of observation may be projected. Therefore, the investi-gations have not definitely delineated or correlated the coal measures in muchof the area investigated. Complete delineation of the coal-bearing formationswould require close drilling both normal and parallel to the strike, but sucha program would be very expensive. The investigations conducted by the Bureauof Mines and Geological Survey are believed to have been extensive enough toserve as an adequate guide for private exploration and development.

INTRODUCTION

The Federal Government's relationship to the coal industry in Alaska isunique in that it is both the landlord and the principal customer of the coalproducer. As the exclusive owner of all coal lands in Alaska, the Governmenthas a direct economic interest in determining the extent, quality, and char-acter of coal deposits as related/to conservation practices, utilization, re-turn from leasing royalties, and good safety practices. Army and Air Forceinstallations in the vicinity of Anchorage and Fairbanks use coal as theprincipal fuel to produce the large amount of heat and power necessary to keepthese bases constantly alert; therefore, the Government also has a major stra-tegic interest in the development of adequate reserves.

To assure an adequate and reliable supply of coal for military instal-lations in the Anchorage area, the Department of the Interior conducted aseasonal, comprehensive program from 1942 through 1958 of field investigationsof the Wishbone Hill district of the Matanuska coalfield. This program in-cluded extensive geological studies by the Geological Survey, supplemented bytrenching, diamond-core drilling, churn drilling, and beneficiation investi-gations by the Bureau of Mines. Much of the work completed before 1952 hasalready been described in publications by the Bureau of Mines3 -5 and theGeological Survey6. This report presents the results of work conducted bythe Bureau for the period from 1949 through 1958.

ACKNOWLEDGMENTS

Cooperation, appraisal, and general assistance by the many interested andactive members of the Alaskan Branch of the U.S. Geological Survey is greatlyappreciated. Special recognition is extended to Farrell F. Barnes of theGeological Survey for his guidance and assistance throughout the entire in-vestigation. Drill-core samples of coal were analyzed by the Bureau of MinesCoal Analysis Section, Pittsburgh, Pa., under the direction of R. F. Abernethy,

3 Apell, G. A., Moose Creek District of Matanuska Coal Fields, Alaska: Bureauof Mines Rept. of Investigations 3784, 1944, 36 pp.

4 Jolley, Theodore R., Toenges, Albert L., and Turnbull, Louis A., Bituminous-Coal Deposits in the Vicinity of Eska, Matanuska Valley Coal Field,Alaska: Bureau of Mines Rept. of Investigations 4838, 1952, 87 pp.

Geer, M. R., and Yancey, H. F., Washability Characteristics and Washing ofCoals From the Matanuska Field of Alaska: Bureau of Mines Rept. of In-vestigations 3840, 1946, 17 pp.

6Barnes, Farrell F., and Payne, Thomas G., The Wisbone Hill District, Mat-anuska Coal Field, Alaska: Geol. Survey Bull. 1016, 1956, 88 pp.

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Chief, and by the Bureau of Mines Coal Analysis Laboratory, Anchorage, Alaska,Kenneth A. Johnson, coal technologist. Officials of the Evan Jones Coal Co.and the Pioneer Mining Co. assisted the work by extending every courtesy andby the occasional loan of equipment or materials.

Bureau of Mines field investigations conducted during 1948 and 1949 wereunder the supervision of Theodore R. Jolley;7 from 1950 through 1956 work wasconducted under the supervision of Robert R. May;8 after 1957 the project wassupervised by the author.

LOCATION AND ACCESSIBILITY

The Wishbone Hill district of the Matanuska coalfield is in the valley ofthe Matanuska River in south-central Alaska (fig. 1), about 45-airline milesnortheast of Anchorage. The district occupies an area about 8 miles long by2-1/2 miles wide that extends northeastward along the north side of MatanuskaValley from the crossing of Moose Creek by Glenn Highway to Knob Creek (fig.2).

The Wishbone Hill district is served by a spur of the Alaska Railroadwhich is routed from Matanuska (a station on the main line) by way of Palmer(the business center of the Matanuska Valley agricultural area) to Eska andJonesville where coal mines and washeries are located. The district is alsoaccessible by all-weather branch roads off the asphalt-paved Glenn Highway.This highway (open to all-year travel) is an interconnecting link of the AlaskaHighway system serving Anchorage at its southwestern terminus, Palmer, and theMatanuska Valley along its route, and connecting with the Richardson Highway atits northeastern terminus. (See figs. 1 and 2.) Since 1942, when heavy floodsalong Moose Creek destroyed railroad tracks of an adjacent branch spur, pro-duction from mines in the western part of the district must be truck-hauled,either to destination or to a railroad loading point located near the mouth ofMoose Creek.

TOPOGRAPHY

Wishbone Hill, from which the district derives its name, is a prominenttopographic feature of the lower Matanuska Valley; it forms a conglomerate-capped ridge that extends from the Premier mine on Moose Creek northeastwardabout 6 miles to Eska Creek. The escarpment that forms the ridge graduallyrises from a height of 125 feet above Moose Creek near the Premier mine toabout 400 feet above the creek opposite the Wishbone Hill mine. The hill reachesits maximum altitude of 2,300 feet in the vicinity of Jonesville. Within theouter escarpments, lines of hogback ridges, and ledges reflect the southwest-ward-plunging nature of the synclinal structure.

7 Mining health and safety engineer, Bureau of Mines, Denver, Colorado; formerBureau of Mines mining engineer, Bituminous Coal-Mining Section, Pittsburgh,Pa.

8 Former Bureau of Mines solid fuels mining engineer, Alaska district, Anchor-age, Alaska.

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FIGURE 1. - Index Map of Alaska.

Wishbone Hill is bounded by several geographical features; on the northit is separated from the Talkeetna Mountains by a broad valley drained by tri-butaries of Eska and Moose Creeks; on the east by Eska Creek; on the west by

Moose Creek, and on the south by a knob and kettle zone of glacial debris (someof the depressions contain lakes). The zone of glacial debris extends 1-1/2 to2 miles southward to the Matanuska River and beyond to the rugged Chugach Moun-tain front.

Wishbone Hill is drained principally by Moose and Eskasmall tributaries; the exception is the southern slope thatand kettle zone of glacial debris with no surface outlets.Creeks head in the Talkeetna Mountain range and are subjectflash floods during periods of heavy rainfall.

Creeks and/or theirdrains into the knobBoth Moose and Eskato destructive

CLIMATE

The Wishbone Hill district, although near tidewater, has a climate morelike that of Interior Alaska than that of typical Alaska coastal regions of thesame latitude. Although annual total precipitation is light, averaging nearly20 inches; concentration of rainfall during late summer months may hamperstripping operations because much of the material immediately over the coalbeds

has a clayey nature that becomes extremely slippery when wet.

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Temperature varia-tions between winter andsummer are extreme. Sum-mer temperatures are fre-quently in the 80° F.range whereas winter tem-peratures are often in theminus 30° F. range. Sus-tained periods of weathermay be below 0° F. duringthe winter months andoften are accompanied bystrong winds. Althoughsurface mining is con-ducted continuously, thebest outdoor working sea-son is from mid-May tomid-October.

VEGETATION

Although annual totalprecipitation is light,the rate of growth anddensity of some vegetationis comparable to areaswith a much more humidclimate. Seasonal plants,such as devil's-club,grass, and farm producegrow rapidly and to pro-digious sizes, whereastree growth (with the ex-cepLIU1l UI cULLooIwooa) 15

FIGURE 2. Location Map Wishbone Hill District. markedly retarded fromlack of moisture and/orthe severe winters. Some

factors contributing to rapid summer growth of vegetation are long hours ofdaylight, comparatively low mean temperature with subsequent small loss ofmoisture due to evaporation, and the greater proportion of the precipitationduring summer months.

Tree growth includes spruce, cottonwood, alder, and birch; the spruce treesseldom gain diameters of more than 1-1/2 to 2 feet, but some cottonwood treesgrow to 3 or 4 feet in diameter. Although large areas of Wishbone Hill are de-void of trees, they are covered with a dense growth of native grass and fireweedthat may attain a height of 6 feet or more. Other small growth includes high-bush cranberry, lowbush or bog cranberry, wild raspberry, salmonberry, blue-berry, wild rose, and devil's-club.

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The larger spruce trees are suitable for mine timber. However, very littleis cut locally; instead, it is imported from the agricultural portions of theMatanuska Valley where it has become a byproduct of farmland clearing.

HISTORY

The history of coal mining in the Wishbone Hill district has been discussedin several Department of the Interior publications. However, a brief summaryof early developments in the district follows:

Doherty Mine

Commercial coal mining in the Wishbone Hill district began in 1916 whenthe Chickaloon branch of the Alaska Engineering Commission Railroad (later theAlaska Railroad) was completed as far as Moose Creek. At this time the DohertyCoal Mining Co. opened a mine on Moose Creek about three-fourths of a mile fromthe mouth of the creek and adjacent to the present crossing of Moose Creek andGlenn Highway, but the operation was short-lived. After an idle period of 10years, the mine was reopened in 1928 by the Pioneer Mining Co. The coal hadsome coking properties and reportedly was utilized for blacksmithing purposes.This operation was also short lived. During the most recent activity in 1953the Pioneer Coal and Coke Co. mined a few tons of coal from a 3-1/2-foot seamthat underlies the old Pioneer workings.

Baxter Mine

The Baxter mine in the western part of the district on Moose Creek wasopened in 1917. Production in small amounts from the so-called big bed (an11-foot seam) was sporadic during 1917-18 and 1921-25. Production was sleddedto a branch line of the Alaska Railroad at the mouth of Moose Creek until1923, when a narrow-gauge spur was completed up Moose Creek as far as the Bax-ter mine. Because of lack of capital and faulted condition of the coalbed,the mine was abandoned in 1925; all the workings are now completely inaccessi-ble. Some of the old worki.ngs may have fed air to a crop fire that burned forseveral years in the vicinity of the caved Baxter portal; the Bureau of Minesextinguished the fire in 1953 by using compacted fill methods.

Eska Mine

The Eska mine No. 1 in the eastern part of the district on Eska Creekwas opened in 1917, and initial coal production was sledded several miles tothe Chickaloon branch of the railroad. Later in the year the Eska mine waspurchased by the Alaskan Engineering Commission, and a rail spur from theChickaloon branch to the mine was completed. The Alaskan Engineering Commis-sion developed and maintained the Eska No. 2 and its predecessor, the EskaNo. 1, so that the railroad would be assured of reliable and adequate sourceof coal. From 1917 to 1946 the mine was kept in a standby condition, exceptwhen private operators could not supply railroad requirements, or during anemergency (World War II). In 1942 the mine was modernized by adding newequipment and facilities, including a Baum-type jig washery. The Eska mine

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closed in 1946 and remains idle to date. To maintain the underground workingsin a standby condition is no longer necessary since the Alaska Railroad has con-verted to almost exclusive use of diesel-powered locomotives. However, with theexception of the washery and subsidiary facilities, the property is still heldin reserve. The washery, powerhouse, and coalbins were purchased by Mark CoalCo. in 1956.

Evan Jones Mine

The Evan Jones mine in the eastern part of the district opened in 1920but did not begin productive mining until 1921 upon completion of a railroadspur connecting it with the Eska spur. The mine quickly became the major pro-ducer of the district and remains so to date. In 1959 about two-thirds ofits total production was obtained by stripping methods.

Until 1950 all production was obtained by underground mining methods asdescribed in Report of Investigations 4838. 9 In 1950 stripping operationswere started at outcrop level adjacent to the underground workings. Initialproduction obtained by this method was transported to the washery by an under-ground chute extending some 1,100 feet downdip (gravity flow) to the mainhaulage level and then by rail along the main haulage to the tipple. In 1953a road was completed to the strip pit and the raw coal is now truck-hauled tothe washery at Jonesville.

A modern heavy-media washery was purchased and installed in 1949 to re-place the manually controlled Forester-type jig. Operational problems with thenew plant caused an extended period of idleness; a full-scale production sched-ule was not attained until 1952. Meanwhile, production continued as usualthrough the old jig washery. The new plant has now completely replaced the oldjig washery, and it has a production capacity of about 1,000 tons of cleanedcoal per 18- or 20-hour day, using magnetite as the heavy media.

Rawson Mine

The Rawson mine on Moose Creek was opened in late 1921. Small amountsof coal were produced during various years through 1938. The property hasbeen inactive since 1938.

Premier Mine

In 1922 development work was started at the Premier mine on beds east ofMoose Creek, and was continued in 1923, but with a shift of operations to bedson the west side of Moose Creek. The development work continued and the minebecame a major producer of the district for several years. In 1926 the narrow-gauge railroad was replaced with standard-gauge track as far up Moose Creek asthe Premier mine. In late 1933 the lower workings were accidentally floodedcausing immediate closure. The property remained idle until World War II. In1942 and 1943 a small amount of coal was produced by extracting pillars thatremained above water level.

9 Work cited in footnote 4, p. 2.

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The most recent activity in the Premier mine area has been by the PioneerMining Co., which produced coal during 1953-55 from an underground operationlocated between the old Premier and Baxter workings on the west side of MooseCreek. The Pioneer Mining Co. also produced coal during 1955-57 from limitedstripping operations conducted at the outcrop level above the undergroundworkings. Coal from the stripping operation was cleaned in a manually con-trolled jig-type washery. In October 1958 production of coal from the under-ground workings recommenced on a small scale.

Matanuska Center Mine

The Matanuska Center mine in the western part of the district on MooseCreek began production in 1925 following extension of the narrow-gauge railroadto its operation and in 1926 the mine became.one of the major producers of thedistrict. Thereafter, production was sporadic until closure in 1929. The Mat-anuska Center mine is presently referred to as the Howard and Jesson. When theproperty may have changed ownership is not known and no record of production asthe Howard and Jesson mine exists.

Wishbone Hill Mine

The Wishbone Hill mine adjacent to the Rawson mine on Moose Creek openedin 1932 and produced a small amount of coal. Operation as the Wishbone Hillmine continued to early 1934. After a period of closure, the property was takenover by the New Black Diamond Coal Co. late in 1934, and a small amount of coalwas produced. There is no record of any production after 1934.

Buffalo Mine

Prospecting and development work at the site of the Buffalo mine on MooseCreek began in 1939. Mining on a production basis with the aid of the U.S.Army during World War II commenced in 1942 and continued until late 1945. InSeptember of 1942 heavy floods along Moose Creek damaged the railroad beyondrepair, forcing both the Buffalo and Premier mines to resort to hauling thecoal by truck.

In 1952 the Buffalo mine was reopened under new management and with theaid of a Reconstruction Finance Corp. loan. Underground workings were drainedand rehabilitated, ventilation was provided, and a new surface plant was underconstruction when all work was suspended early in 1953. The property has sinceremained idle.

Knob Creek Coal Co.

In 1947 work of a prospecting nature was started by the Knob Creek CoalCo. in the extreme eastern part of the district near Knob Creek. This work con-sisted of two short entries; the first was driven a distance of 130 feet with-out reaching coal; the second was driven a distance of 100 feet on coal and wasdiscontinued at a fault in 1950.

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In 1953 the property was acquired by the Mrak Coal Co.; some undergroundprospecting and development continued to 1955, but production by strippingmethods was begun during the summer of 1953 and has since replaced all under-ground mining. Early production, both from underground and stripping operations,was cleaned by the Evan Jones washery. In mid-1955 the company built andoperated its own small Forrester-type jig washery. The Eska washery (equippedwith a Baum-type jig), powerplant, and coalbins, subsequently obtained from theAlaska Railroad, replaced the smaller plant in August 1956.

PRODUCTION

The following table showing total production by years from the WishboneHill district is partially duplicated from Geological Survey Bulletin 1016.10Production figures for 1916-52 are from the bulletin; figures for 1953-59were compiled from records kept by the Alaska Office of Mineral Resources,Bureau of Mines, Juneau, Alaska.

TABLE 1. - Coal production from the Wishbone Hilldistrict through 1959

Year Number of mines Short tons

1916-1934 .................................. 7 918,5611935 ........................................ . 2 48,8191936 ....................................... 3 60,9981937 ....................................... .. 3 49,7891938 .................... ................... 3 52,4901939 ...................................... .. 2 51,0841940 ....................................... 1 64,5661941........................................... 2 110,7321942 ....................................... 4 138,5271943............. ..... ...................... 4 173,9091944 ....................................... .. 3 210,2431945 .................. ... .... ............... 3 166,7441946 ....................................... .2 164,8731947...................................... .... 1 171,7991948 ..... ................................... 2 147,4361949 ....................................... 3 180,0421950 ....................................... .3 153,0101951 ....................................... .2 177,8671952 ....................................... 3 243,2341953 ....................................... 4 286,4651954 ....................................... 3 227,7881955 ......... ...................................3 257,5481956 ....................................... 3 269,0671957 ................................ ......... 2 237,1141958 ....................................... 3 279,9271959 ....................................... . . 3 251,266

10 Work cited in footnote 6 (p. 2), p. 81.

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The utilization of coal from the Wishbone Hill district has changed con-siderably over the years. Until World War II, a large percentage of productionwas consumed by the Alaska Railroad; during and since World War II, the AlaskaRailroad has converted almost entirely to diesel locomotives. The increaseddemand and present use of coal has been brought about by construction of largemilitary establishments in the Anchorage area with resultant increased coalrequirements for the generation of electricity and for heating purposes. TheAnchorage area presently has three coal-steam power-generating plants - twomilitary and one private.

GEOLOGY

The geology of the Wishbone Hill district has been discussed in variousDepartment of the Interior publications. The most recent comprehensive publi-cation is Geological Survey Bulletin 1016 by Barnes and Payne, which incorpor-ates data obtained from Bureau of Mines diamond drilling through 1952; otherpublications concerning specific areas within the Wishbone Hill district areBureau of Mines Reports of Investigations 3784 and 4838. These publicationscontain detailed interpretations of geology and structure of the Wishbone Hilldistrict.

The following description of the general geology of the district isbriefly summarized from various publications supplemented by data from subse-quent investigations by the Bureau of Mines.

The Wishbone Hill district is bounded on the north and south by parallelzones of major faulting. These zones of major faulting border the MatanuskaValley and separate the Tertiary and Cretaceous rocks of the valley from theolder intrusive and metamorphic rocks of the mountains on either side. Thedistrict is composed of moderately deformed clastic rocks of Tertiary age; theMatanuska formation of upper Cretaceous age presumably underlies the district,but no exposures have been located.

The Tertiary system of the Wishbone Hill district is comprised of threenonmarine formations known in descending order as the Tsadaka, Eska Conglom-erate, and Chickaloon formations. The Tsadaka formation (sometimes referredto locally as the Upper Eska Conglomerate) consists of several hundred feetof boulder to cobble conglomerate with many sandstone and siltstone lenses;the formation lies with distinct angular unconformity on the Eska Conglomerateand/or the Chickaloon formation.

The boulders and cobbles of the Tsadaka formation (predominately graniteand diorite in a matrix of granitic debris) are distinctive as compared to theEska Conglomerate (predominately pebbles to cobbles of fine-grained igneousand metamorphic rocks such as chert, vein quartz, and jasper in a sandy matrix).Barnes and Paynel l report the Tsadaka formation to be poorly indurated. Thismay be true on the outcrop, but not necessarily so below the weathering zone.In several instances of penetration of the Tsadaka formation by Bureau of Minescore drilling, the material stood well in open holes and no trouble was exper-ienced with loosening cobbles.1 Barnes, Farrell F., and Payne, Thomas G., The Wishbone Hill District, Mat-

anuska Coal Field, Alaska: Geol. Survey Bull. 1016, 1956, 88 pp.

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The Eska Conglomerate (named the Wishbone formation by Barnes and Payne)consists predominately of pebbles, cobbles, and a few boulders in a sandymatrix; it also includes many sandstone lenses and a few lenses of the finerclastics. The amount of finer clastics increases towards the base of theconglomerate and blends imperceptibly into the underlying Chickaloon forma-tion. This creates what has been termed the transition zone between the EskaConglomerate and Chickaloon formations.

The Eska Conglomerate forms the dominant surface feature of the WishboneHill area clearly reflecting its gently southwestward-plunging synclinalstructure. Its outcrop area includes most of Wishbone Hill, and its escarp-ments may be observed from a distance of several miles. The Eska Conglomeratehas a maximum measured thickness of at least 1,850 feet.

The Chickaloon formation is comprised of 3,000 to 5,000 feet of interbeddedsandstone, siltstone, claystone, and many coalbeds. The minable coalbeds ingeneral are confined to the upper 1,400 feet of the Chickaloon formation; theyalso are confined to three rather well-defined and persistent groups of coalbedsthat are separated by comparatively thick strata containing little or no coal.The individual groups of coalbeds are known in descending order as the Jones-ville, Premier, and Eska. Barnes and Payne introduce a fourth group of coalbeds(the Burning Bed group) that is believed to underlie the Eska coal group. Anisolated bed occurring between the Premier and Eska coal groups has beenidentified at several localities in the district. This bed, called the Midway,is considered to be of minable thickness only in the vicinity of the Buffalomine (table 4).

Within a given group of coalbeds, the thickness of individual beds mayvary within relatively short distances, or the beds may be comparatively cleanat one locality and extremely dirty at another. The distance between bedsand between groups of beds also varies. The thinning out or intergrading ofan individual coalbed within relatively short distances is believed to be dueprimarily to the deltaic origin of the deposits, but also may be due in partto distortion incident to folding and faulting. The extreme variations in thephysical characteristics of the coalbeds, together with the complex structure,lack of markers, and scarcity of outcrops, makes correlation of individual bedsvery difficult; however, in general, with the aid of drilling, trenching, andmining, the identification of a particular group or series of beds over rea-sonable distances is possible.

The dominant structural feature of the Wishbone Hill district is theprominent, gently plunging, southwestward-trending syncline to which both theEska Conglomerate and underlying coal-bearing Chickaloon formation conform.The overlying later Tsadaka formation lies unconformably on the Eska orChickaloon formation and has been only moderately disturbed structurally. Theexposed length of the synclinal structure between the Premier mine on MooseCreek and the Eska mine on Eska Creek is about 7 miles. The syncline has been

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divided into segments by several major transverse faults (figs. 3 and 6,pocket) and locally modified by minor folding and faulting. The syncline isroughly canoe shaped with the closed end of the canoe outlined by the oldPremier mine workings.

Glacial deposits, consiting of a poorly sorted mixture of clay, sand,gravel, and boulders cover most of the Wishbone Hill district to depthsranging from a few inches to more than 100 feet. These deposits have thegreatest thickness southward from the south base of Wishbone Hill, forming atypical knob and kettle topography that offers no surface clue to the under-lying bedrock structure or to the location of the coal-bearing formations.

WORK BY THE BUREAU OF MINES

Investigations Before 1949

Investigations by the Bureau of Mines in the Wishbone Hill district wereundertaken as a result of World War II, which caused increased demands forcoal far exceeding prewar requirements. As a stimulus to mine developmentand production, a diamond-drilling and trenching program designed to extendthe known area of minable coal deposits and prove additional tonnage alongMoose Creek was initiated in November of 1942 and was continued (with inter-ruptions) until December 1944. During this time, 11 drill holes and severaltrenches were completed; the location of the drill holes are shown on figure6. These investigations are described in Report of Investigations 3784. 2

Simultaneously with diamond drilling in this area, the Buffalo mine began pro-duction, which helped to alleviate coal shortages during the following waryears.

In 1945 drilling operations were shifted to the eastern part of the dis-trict where the Bureau of Mines undertook to find additional reserves on thenorth limb of the syncline that could be mined from the Eska 2 mine. To thisend, three diamond-drill holes were completed which are located west of theEska 2 mine portal in the NW1/4 sec. 16, T. 19 N., R. 3 E. (See figure 3.)Drilling operations stopped in 1946, but in 1947-48 nine diamond-drill holeslocated in the extreme northeastern part of the district were completed. Thesedrill holes are in the same general area as the old Knob Creek workings andthe present Mrak Coal Co. strip operations. The results of the drillingaccomplished in this phase of the exploration program are published in Reportof Investigations 4838.13

12 Apell, G. A., Moose Creek District of Matanuska Coal Fields, Alaska:Bureau of Mines Rept. of Investigations 3784, 1944, 36 pp.

13 Jolley, Theodore R., Toenges, Albert L., and Turnbull, Louis A., Bitumin-

ous-Coal Deposits in the Vicinity of Eska, Matanuska Valley Coal Field,Alaska: Bureau of Mines Rept. of Investigations 4838, 1952, 87 pp.

E

1

13

Central Part of Wishbone Hill District

The central part of the Wishbone Hill district includes both the northand south limbs of the syncline in the area lying westward from the Jonesvillefault to the Range line (fig. 3). Most of the active workings of the EvanJones mine (both underground and strip operations) are on the north limb ofthe syncline in this area.

In late 1948 Bureau of Mines exploratory drilling operations were shiftedto the central part of the district for the purpose of determining, if possible,the attitude, position, and quality of the coal measures on the south limb ofthe syncline. Because of the heavy cover, little was known of the location orproduction potential of the coal-bearing formations of the south limb. Ex-ploration in this area included 14 drill holes (number WH-1 to WH-14) aggre-gating 6,297 feet of churn drilling and 12,377 feet of diamond-core drilling.All these holes, except WH-14, were drilled under contract. Incidental tothe drilling, in order to gain access to the various drill-hole locations,about 6 miles of bulldozer-excavated one-lane roads were built (also mostly bycontract).

The locations of the drill holes, collar elevations, and principal for-mations encountered are given in table 2, and described individually in thefollowing paragraphs.

Drill Holes WH-1 Through WH-8

During late 1948 and 1949 eight diamond-drill holes designated DDH-WH-1through DDH-WH-8, and ranging in depth from 411 to 1,358 feet were com-pleted (see fig. 3 for plan location). Although coalbeds of minable thicknesswere intersected in each of the drill holes, the results of this phase of thedrilling program were, in general, disappointing. Correlation of individualbeds or groups of beds between holes, or with south limb coalbeds exposed inold workings of the Evan Jones mine could not be made with any degree ofcertainty.

Barnes and Payne14 have tentatively assigned the diamond-drill hole coalintersections to the various coal groups (Jonesville, Premier, and/or Eska) onthe basis of stratigraphic evidence as shown in figure 4, section A-A. How-ever, since the individual drill-hole sections show such marked disparity be-tween each other, the continuity of any one coal group over a significantstrike length is very doubtful. For this reason, no additional minable re-serves were added as a result of this phase of the drilling program.

The marked disparity of the coal intersections in this group of drill holesprobably is due to contortion and dislocation of the formations because of lo-cally intense folding and faulting. The distortion appears to be particularlyintense at the toe of the escarpment near the extremity of the south limb wherethe conglomerate cover is relatively thin. Downdip from the toe of the escarp-ment, the formations appear to be less disturbed, as was indicated by subse-quent downdip drilling through the thicker conglomerate capping where correlative

14 Work cited in footnote 11, p. 10.

627316 0 -62-Z

14

coal-bearing formation were found and by the underground workings of the Evan

Jones mine. These workings are beneath the thick conglomerate capping on thenorth limb of the syncline where coal is produced from beds that are relativelyundisturbed except for major transverse faulting. Descriptive logs and re-sults of analyses are given in the appendix.

Drill Holes WH-9 Through WH-13

Because of the erratic conditions found in the drill holes along thesouth edge of the conglomerate, investigators decided in 1950 to move drillingoperations northward onto the conglomerate mass of Wishbone Hill proper to de-termine if such unfavorable conditions extended downdip toward the synclinalaxis. If improved conditions were indicated by deeper drilling, the positionof the synclinal axis and the depth, attitude, and character of the coalbeds inits vicinity would be determined as an aid to possible future mining operations.The discovery of an area where the coal was comparatively flat-lying, such asmight be expected near the synclinal axis, was particularly desirable for deepdevelopment and mechanized mining.

Churn drilling was used to penetrate the conglomerate capping; core dril-ling was then continued from the bottom of the churn-drilled holes into the

coal-bearing formations. During 1950-52 four drill holes (WH-9, 10, 11, and12) were completed. Their churn-drilled depth ranged from 1,151 to 1,293 feet,and their total depth ranged from 2,100 to 2,114 feet. A fifth hole, DDH-WH-13, was churn drilled through Eska Conglomerate to a depth of 1,305 feet in1952 and core drilled to a total depth of 1,707 feet in 1953. At 1,707 feet,the tools became stuck in soft-caving Chickaloon formations and were brokenoff. After the failure of repeated efforts to remove the stuck section oftools, the hole was abandoned. The locations of the five vertical holesdrilled during this period are shown on figure 3. Holes 9, 10, and 11 arelocated on the south limb of the syncline; hole 12 is believed to be locatedat or very near the synclinal axis, and hole 13 was planned to intersect bedson the north limb of the syncline.

The results of this series of holes were considerably more promising thanthe previous series drilled along the south limb extremity. All the holes,with the exception of DDH-WH-13, which was abandoned short of any coal measures,intersected coalbeds of minable thickness. The intersected beds are believedcorrelative. Investigators believe that drill holes 10, 11, and 12 intersected

the Jonesville group and all holes (with the exception of 13) have intersectedthe Premier group. The Jonesville group was absent in hole 9; the interval ofthe hole that should have included this group contained only short intervals ofcoaly claystone and longer intervals containing many coaly streaks and frag-ments. The core recovered from this section of hole showed a high degree ofshearing. Therefore, the Jonesville group probably was eliminated by a localminor fault. Apparently only hole 11 reached the Eska coal group, which here

consisted of several thin nonminable coalbeds. Sections B-B and C-C (fig. 4)show an interpretation of data obtained from this series of drill holes.Because no positive individual bed correlation would be made, coal intersec-tions are shown as a group of beds. Descriptive logs and results of analysesare contained in the appendix.

DrillholeNo.

WH-1....

WH-2....

WH-3....

WH-4....

WH-5....

Location

165 ft. N., 305 ft.E. of W. 1/4 cor.sec. 20 (vertical)

810 ft. N., 1,890ft. E. of W. 1/4cor. sec. 20(vertical)

825 Ft. S., 1,665ft. W. of E. 1/4cor. sec. 19(vertical)

305 ft. S., 680 ft.W. of E. 1/4 cor.sec. 19 (vertical)

470 ft. N., 1,130ft. E. of W. 1/4cor. sec. 20(vertical)

Collareleva-tion

835

740

785

842

872

15

TABLE 2. - Summary of drill-hole data, central part

of Wishbone Hill district

From,feet

.--- - --

Churn Coredrillinq drilling

To,feet

From,feet

044

127271

352612

695852

863

040

067165

173352

536

056

132370

533

0106339

435

To,feet

44127

271352

612695

852863

1004

40757

67165173

352536

1358

56132

370533

998

106339435

Principalformations

intersected

Overburden.Eska Conglomer-ate.

Chickaloon.COAL (Jonesvillegroup).

Chickaloon.COAL (Premiergroup).

Chickaloon.COAL (Eskagroup).

Chickaloon.

Overburden.Chickaloon.

Overburden.Chickaloon.COAL (Jonesvillegroup).


Chickaloon.



Chickaloon.

Overburden.Chickaloon.COAL (Premiergroup).

Chickaloon.736I

I

DrillholeNo.

WH-6....

WH-7....

WH-8....

WH-9 ....

WH-10...

Location

1,005 ft. N.,ft. E. of W.cor. sec. 20(vertical)

1,6251/4

770 ft. N., 2,270ft. E. of S. 1/4cor. sec. 19(vertical)

1,195 ft. N., 690ft. W. of S. 1/4cor. sec. 19(vertical)

1,005 ft. S., 905ft. W. of NE. cor.sec. 19 (vertical)

555 ft. N., 3,380ft. E. of E. 1/4cor. sec. 19(vertical)

16

TABLE 2. - Summary of drill-hole data, central partof Wishbone Hill district (Con.)

857

834

833

1,240

1,032

Collareleva-tion

drillFrom,feet

Churning

To,feet

045

312

367

035

258579

612869

959

021

419438

524

Coredrilling

From,feet

45312387

411

35258

579612

869959

963

21419

438524

887

To,feet

Principalformations

intersected

Overburden.Chickaloon.COAL (Premiergroup).

Chickaloon.




Chickaloon.

OverburdenEska Conglomer-ate.


Chickaloon.


Chickaloon.Do.

COAL (Premiergroup).

Chickaloon.


Do.Chickaloon.COAL (Jonesvillegroup).

Chickaloon.

4

I

04

41,225

1,257

I

1,2251,2571,671

1,895

1,6711,895

2,104

011

111,151

1,1511,4591,652

1,705

1,4591,6521,705

1,801.

DrillholeNo.

WH-10(con.)..

WH-11....

WH-12....

WH-13....

WH-14....

Location

735 ft. N., 1,500ft. W. of E. 1/4cor. sec. 19(vertical)

875 ft. S., 2,630ft. W. of NE.cor. sec. 19(vertical)

1,190 ft. N.,1,125 ft. W. ofSE. cor. sec.18 (vertical)

1,605 ft. S.,2,130 ft. E. ofNW. cor. sec.20 (horizontal),(Bearing N.40°W.)

1,197

1,172

1,646

731

17

TABLE 2. - Summary of drill-hole data, central part

of Wishbone Hill district (Con.)

Collareleva-tion

From,feet

03

1,010

Churndrilling

To,feet

31,010

1,291

From,feet

1,801

1,973

1,2911,371

1,4871,624

1,8631,977

1,997

Coredrilling

1, 973

2,110

1,3711,487

1,6241,863

1,9771,997

2,100

To,feet

Principalformations

intersected

COAL (Premiergroup).

Chickaloon.


Chickaloon.Do.

COAL (Jonesvillegroup).



Chickaloon.




Eska Conglomer-ate.

Do.Chickaloon.

Evan Jones adit(drilled throughcasing).

Chickaloon.Eska Conglomer-ate.

015

151,293

0 1,305

1,2931,6921,852

1,9111,990

1,3051,556

0

1931,376

1,6921,8521,911

1,9902,114

1,5561,707

193

1,3761,425

.

500-

57S

0-

LE=. Over bur

m �1

I-

DDHWH-7(Projected)

DDHWH-8 DDHWH-3(Projected)

DDHWH-4 DDHWH-I DDHWH-5 DDHWH-6 DDHWH-2(Projected)

Group ?

-Seo level '0o

-500

| Esko conglomerate

Cool group

SECTION A-A

I Axis of WishboneS E C T I O N B- Hill synclineSECTION 9-8 ['i'" W"'r"'

NOTE:Cool group intersections tentativelyidentified by the US Geologicol Survey

0 500 1000 1500 2000 2500

Scale in Feet

FIGURE 4. - Sections A-A, B-B, and C-C, Drill Holes WH-1 Through WH-13.

r j &S Im oh &

19

Drill Hole WH-14

In addition to the five vertical holes drilled from the higher slopes ofWishbone Hill, a horizontal hole was drilledwin 1952 to obtain data on theposition, attitude, and quality of coal seams believed to underlie the con-glomerate escarpment immediately west of Jonesville. The location best suitedwas the face of a short adit previously driven by the Evan Jones Coal Co. Theshort adit intersected a coal seam believed to correlate as one of the uppermembers of the Premier coal group, but the correlation was not positive, andthe position, attitude, and quality of the overlying Jonesville group in thisarea was not known; the horizontal hole was drilled to obtain this information.

To accomplish the drilling with available equipment, a surface gasoline-engine-driven drill was set up at the portal of the short adit, and the drillrods from portal to face were operated in casing supported by sprags acrossthe adit. For measuring purposes, the casing head at the portal was consideredthe hole collar.

The results of this drilling were very disappointing; the hole, desig-nated DDH-WH-14 (fig. 3), was drilled to 1,425 feet and bottomed in EskaConglomerate without having encountered a single coal measure.

The difficult drilling conditions encountered in the hole (such as abun-dance of mud, a strong waterflow, and swelling ground) and the apparent repe-tition of certain strata as noted in the core indicated extensive movementalong at least two strong faults. This movement may have removed the Jones-ville group of coal measures from the section penetrated by the drill hole.A large fault intersected at 1,110 feet is possibly the Jonesville fault,along which major displacements have been measured where exposed in mineworkings to the north. Figure 5 shows hole number DDH-WH-14 in section; thesection was devised by the Geological Survey as the most plausible of severalpossible geological interpretations to best fit the available information.The detailed log of the core is given in the appendix.

Western Part of Wishbone Hill District

The western part of the Wishbone Hill district includes both the northand south limbs of the syncline in the area extending westward from the Rangeline to the Premier mine (fig. 6). Prominent topographic features are thevalley of Moose Creek and the Eska Conglomerate escarpment that longitudinallyborder the north limb of the syncline in this area. Mining activity withinthe area has been confined to a narrow strip along or near Moose Creek wheremany coal outcrops occur. With the exception of the Premier mine, all pro-duction has been from the north limb of the syncline. Until the Bureau ofMines did subsurface exploration, no attempt had been made to locate theposition of south limb outcrop within this area.

I

NJ0

0"

FIGURE 5. - Section Through Drill Hole WH-14.

&Z a . & r

21

Subsurface exploration in this part of the district included 2,422 feet ofchurn drilling, 13,083 feet of diamond-core drilling, and about 25,000 cubicyards of dragline trench excavation. To reach the various drill-hole locations,about 8 miles of bulldozer-excavated roads were built. All the dragline tren-ching and a substantial part of the access road construction and drilling wascompleted under contract. Typical contract terms are given in the appendix.

Exploratory drilling was undertaken on both the north and south limbs ofthe syncline in several contiguous areas that are divided by major transversefaults. In addition to transverse faulting, part of the area has been sub-jected to a thrust fault, designated the Moose Creek fault, which dips about40° SE. and has a surface strike trace along Moose Creek just below the baseof the Eska Conglomerate (fig. 6). The segment between the Buffalo and Baxtertransverse faults that contains the Buffalo mine and a section of drill holesmade by the Bureau of Mines apparently were not affected by the Moose Creekfault.

Drill-hole data are summarized in table 3. Exploration by both trenchingand drilling is described in detail, and the results are interpreted by areaand method.

North Limb

Earlier reconnaissance core drilling in the western part of the districtby the Bureau of Minesl b and surface geologic interpretation by the GeologicalSurvey16 indicated that a part of the district adjacent to Moose Creek mightcontain a large block of relatively undisturbed coal. If this could be proved,the known minable coal reserves within the Wishbone Hill district would beconsiderably increased. Investigators believed that a block of ground lyingbetween the Buffalo and Baxter faults was most likely to contain the largestunit of relatively undisturbed minable coal reserves. A section of diamond-drill holes was planned to accomplish proof of existence, continuity, attitude,and position. The section is located between the Baxter and Buffalo faultsand oriented approximately normal to the synclinal strike. This seriesof drill holes would complement the earlier reconnaissance drilling.

1 5 Apell, G. A., Moose Creek District of Matanuska Coal Fields, Alaska: Bureauof Mines Rept. of Investigations 3784, 1944, 36 pp.

Jolley, Theodore R., Toenges, Albert L., and Turnbull, Louis A., Bituminous-Coal Deposits in the Vicinity of Eska, Matanuska Valley Coal Field,Alaska: Bureau of Mines Rept. of Investigations 4838, 1952, 87 pp.

Geer, M. R., and Yancey, H. F., Washability Characteristics and Washing ofCoals From the Matanuska Field of Alaska: Bureau of Mines Rept of In-vestigations 3840, 1946, 17 pp.

16 Barnes, Farrell F., and Payne, Thomas G., The Wishbone Hill District, Mat-anuska Coal Field, Alaska: Geol. Survey Bull. 1016, 1956, 88 pp.

DrillholeNo.

MC-1....

MC-2....

MC-3....

MC-4....

MC-5....

Location

1,675 ft. N., 1,043ft. E. of SW. cor.sec. 23 (vertical)



921 ft. N., 1,964ft. E. of SW. cor.sec. 23 (vertical)

635 ft. N., 2,384ft. E. of SW. cor.sec. 23 (vertical)

Collareleva-tion

1,063

1,084

1,096

1,100

1,107

22

TABLE 3. - Summary of drill-hole data, western partof Wishbone Hill district

drill

From,feet

0

0110

135

0139

Churn.ingTo,feet

90

110135

221

139180

1,367

dril

From,feet

01946

256691

838

013

349

547936

90106

399760

945

221544773

941

180864

Coreing

To,feet

691838

932

13349547

9361,367

1,405

106399

760945

958

544773941

1,012

1946

256

Principalformations

intersected



Chickaloon.



Chickaloon.

Overburden.Overburden.Eska Conglomer-ate.


Chickaloon.

I

I

Overburden.Tsadaka Conglom-erate.

Eska Conglomer-ate.


Chickaloon.


864922

Do.Chickaloon.

. --

DrillholeNo.

MC-6....

MC-7....

P-1 .....

MC-8....

MC-9....

Location

322 ft. N., 2,773ft. E. of SW.cor. sec. 23(vertical)

252 ft. S., 3,550ft. E. of NW. cor.sec. 26 (vertical)

126 ft. N., 944 ft.E. of E. 1/4 cor.sec. 27 (-450),(Bearing S. 39°E.)

2,163 ft. N., 2,595ft. W. of SE. cor.sec. 26 (vertical)


.-

Collareleva-tion

1,150

23

TABLE 3. - Summary of drill-hole data, western part


1,150

899

874

800

Churndrilling

From,feet

0

021

0108

172

117

To,feet

From,feet

117

206

Coredrilling

1,176

05

244

980,2101

1,571

014

141247

490682

823

198425472

560

.-

206

1,176

1,202

5244

980

1,2101,571

2,017

14141

247490

682823

837

425472560

982

To,feet

Principalformations

intersected

Overburden andTsadaka Con-glomerate.

Tsadaka Conglom-erate.

Eska Conglomer-ate.

Chickaloon.


Eska Conglomer-ate.

Chickaloon.Eska Conglomer-ate.

Chickaloon.




Chickaloon.



Chickaloon.


Chickaloon.

21198

108172

265.- . .---

DrillholeNo.

MC-9(con.

MC-10....

MC-11....

MC-12....

MC-13....

MC-14....

MC-15....

MC-16....

MC-17....

Location


357 ft. S., 1,665ft. E. of NW. cor.sec. 35 (vertical)

16 ft. N., 2,678ft. W. of SE. cor.sec. 27 (vertical)

886 ft. N., 3,486ft. W. of SE. cor.sec. 27 (vertical)



24 ft. S., 1,260ft. E. of SW. cor.sec. 26 (vertical)


24

TABLE 3. - Summary of drill-hole data, western part


Collareleva-tion

738

766

855

863

847

849

794

892

From,feet

Churndrilling

0

0160

055

0

0110

056

165

0180

067

To,feet

60

160234

55180

160

110149

56165

170

180232

6791

From,feet

Coredrilling

265429

594

60

149239

170

263

To,feet

429594

911

803

239648

263

Principalformations

intersected


Chickaloon.




Overburden.


Do.Chickaloon.

Overburden.Tsadaka Conglom-erate?

COAL (Premiergroup?).

COAL (Premiergroup?).

Chickaloon.


Chickaloon.


I

I

1,046

232 599

---- --- .--

25

TABLE 3. - Summary of drill-hole data, western partof Wishbone Hill district (Con.)

Churn Core

Drill Collar drilling drilling Principalhole eleva- From, To, From, To, formationsNo. Location tion feet feet feet feet intersected

MC-18... 2,990 ft. N., 360 785 0 73 Overburden.ft. W. of SE. cor. 73 75 Do.sec. 26 (vertical) 75 80 Do.

80 347 COAL (Premiergroup).

347 566 Chickaloon.

Drill Holes MC-1 through MC-7

During 1953 and 1954, seven diamond-drill holes (designated DDH-MC-1through DDH-MC-7) were completed (see fig. 6 for plan locations). Drill holesMC-1 and MC-2 were drilled through both the Jonesville and Premier coal groups;the Jonesville coal group had not previously been shown to exist in this area.Coalbeds of economic importance are present in each coal group and in bothdrill holes. Drill holes MC-3 and MC-4 were discontinued at or very near thebase of the Jonesville coal group. Either a minor fold or fault occurs betweenholes MC-3 and MC-4, but the deformation is probably not of a magnitude to im-pede mining (fig. 7, section D-D). Because of the increased depth to the coalmeasures toward the synclinal axis and the resultant increase in cost, holesMC-5 and MC-6 were drilled only to the base of the Eska Conglomerate to estab-lish the continuity of the structure and to locate, if possible, the approximateposition of the synclinal axis rather than to obtain additional samples of thecoals.

c On the basis of data obtained from the previous holes, hole MC-7 was subse-quently located on the projected position of the axis and was drilled to adepth of 1,109 feet, a depth believed to lie below the conglomerate base. Asoriginally planned, drill hole MC-7 was to be continued through both the Jones-ville and Premier coal groups. However, for various reasons, drill hole MC-7was discontinued at a depth short of any coal measures. In 1958, because ofcorrelation difficulties experienced in subsequent drill holes, the originalplan was renewed by continuing drill hole MC-7 to a total depth of 2,017 feet.The results of the continued drilling were very disappointing. At 1,210 feetthe hole reentered Eska Conglomerate and continued in this formation to a depthof 1,571 feet. From 1,571 feet to bottom, the hole penetrated typical sedimentsof the Chickaloon formation but did not encounter coal of economic importance.Although the evidence is not conclusive, either from observation of drill coreor drilling characteristics, investigators believe that drill hole MC-7 en-countered a major fault, probably the Buffalo fault. The Buffalo fault isessentially a tear fault along which the west side has moved southward. Toaccount for the intersection of the Buffalo fault by drill hole MC-7, the fault

N)

0C)-TT

1 0 rCMi M0

I 0 U

C I I- 0 I Q 0 T CI

mo Esko conglomerate

] Chckoloon formation

0 Cool group in drill hole

0 400 800 1200 Individual seao or bond

Scole in Ft of coal in drill holeSFIGURE 7.al in Feet

FIGURE 7. - Sections D-D and.E-E, Drill Holes MC-1 Through MC-10.

I - I

27

either varies slightly from vertical and/or the drill hole with increasingdepth assumed a slight angle from vertical. To explain the absence of theJonesville and Premier coal groups as related to intersection of the Buffalofault, the writer favors an explanation involving displacement of a relativelysmall independent segment of Eska conglomerate within the Buffalo fault zone.The conglomerate segment was displaced at the time of main movement along theBuffalo fault, both horizontally and vertically, to a position correspondingto the drill-hole interval of 1,210 to 1,571 feet. The segment of con-glomerate thus occupies a stratigraphic position that normally should havecontained the Jonesville and Premier coal groups (see fig. 7, section D-D).

Drill Hole P-l

Simultaneously with contract core drilling in the Buffalo mine area,Bureau of Mines equipment and personnel were employed to core drill in anarea east of the old Premier mine and on the opposite side of the prominentPremier fault (see fig. 6). Several coal seams had been found in this area,but because the amount of displacement along the Premier fault was unknown andthe lack of any marker beds, these coalbeds could not be correlated with anyof the known coal groups of the Wishbone Hill district. If these coalbedscould be identified and their stratigraphic position established, the develop-ment of future mining operations in the area might be decidedly influenced,and if an overlying coal group exists, the economically recoverable reserveswithin this potential block would be considerably increased. Accordingly, thebest estimate possible of the Premier fault displacement was used to locate aproposed drill hole (P-l) that should intersect any overlying coal group andproduce data indicative of the synclinal structure on the north side of thePremier fault.

In an attempt to reach bedrock before drilling, the bulldozer reachedcoal. Additional trenching was then undertaken to correlate the newly un-covered coalbeds. Overlying Eska Conglomerate was ultimately uncovered, thusmaking fairly certain the assignment of these coalbeds to the Jonesville group;attitudes indicated the beds were on the north limb of the syncline. However,bulldozer trenching to determine the structure to the east of the exposure be-came impractical because of the depth of glacial overburden. Therefore, drillhole P-l finally was collared from the location shown on fig. 6.

Drill hole P-l was core drilled at an angle of minus 45° on a bearing ofS. 39° E. to a total depth of 837 feet. It intersected the contact of the EskaConglomerate and the Chickaloon formation and coalbeds of both the Jonesvilleand Premier groups. The angle of bedding intercepted indicated that the coal-beds have a 5° to 15° dip, which further indicated a decided broadening of thesynclinal trough in comparison to the old Premier workings. The hole is shownin section on figure 8; a detailed log and coal analyses are given in theappendix.

Lult intersection

Trench I

28

Dragline Trenching: Vicinity of Old Premier Mine Workings

Although additional bulldozer trenching in the vicinity of the old Premiermine had proved impractical, researchers believed that probably a draglinecapable of digging to depths of 30 feet could be effectively utilized. There-fore, in 1955 trenching was begun to trace the synclinal structure from theknown position of north limb outcrop across the syncline to the unknown posi-tion of south limb outcrop.

Trench No. 1 commenced about 600 feet southwest of the collar of drillhole P-l and progressed eastward approximately parallel to the projected traceof the Premier fault. Minable beds of the Jonesville coal group at a very steepattitude were cut in the western part of the trench, and the overlying sedimentsof the Upper Chickaloon formation were exposed eastward to a position near thecontact of the Eska Conglomerate and Chickaloon formations. The trench was thencontinued eastward at intervals for observation of the predominant attitudesof the interbedded lenticular sandstone contained in the conglomerate (seefig. 6).

Al

Eska Conglomerate bed-rock was reached at inter-vals to a distance of about

LEGEND -I

:m. Overburden

Ig Esko conglomerate

I Chickoloon formation

PremierFault -

3,500 feet from the begin-ning of trench No. 1. Themost eastward bedrock ob-tained, in trench No. 1-Eat a distance of about4,300 feet, showed Tsadakaformation; three attemptseastward of trench No. 1-Efailed to reach bedrock.Although the position of thesouth limb coal outcrop wasnot determined, average dips(though very erratic) andthe synclinal width overwhich Eska rnnnl nmrate was

\ Cool group in drill hole 1

Scale in Feet

FIGURE 8. - Section Through Drill Hole P-1.uncovered indicated a com-paratively broad synclinalstructure.

Two subsidiary trenches, No. 2 and No. 3 (see fig. 6), were located about500 feet and 1,300 feet, respectively, northeast of trench No. 1 to cross theprojected strike of the north limb of the Jonesville coal group. Trench No. 2apparently cut the Jonesville coal group, but at a position that can only beaccounted for by the presence of a transverse fault between trenches No. 1 andNo. 2. Subsequent strip mining of the Jonesville coal group has proven theexistence and position of the fault (see fig. 6). Trench No. 3 traversed bedsof medium-grained sandstone at rather flat attitude (15° to 20°) but failed tointersect any coal measures. The area in which trench No. 3 is located probablyhas been affected by the Moose Creek thrust fault.

29

South Limb

During 1956 and 1957 a series of drill holes planned to augment earlierdrilling and trenching in the southwestern part of the Wishbone Hill districtwas begun to locate the south limb outcrop position and establish the strati-graphic continuity of the major coal groups (Jonesville and Premier) in eachof the several blocks caused by the Buffalo, Baxter, and Premier transversefaults. Over much of this section of the district, the capping of Eska orTsadaka conglomerates submerges under areas of moderate to heavy glacial cover.Therefore, churn drilling was used to penetrate the bouldery glacial overburdenand was continued into bedrock to determine, if possible, the identity of theformation from the churn-drill cuttings. Where the churn-drill cuttings indi-cated the presence of favorable formations, core drilling was used to explorethe underlying strata.

Drill Holes MC-8 Through MC-10

Drill holes MC-8, 9, and 10 are located within the same fault block asdrill holes MC-1 through 7 (see fig. 6). These holes were drilled to completea section across the entire width of the syncline. Because of difficult accessand the proximity of the Buffalo fault, the line of section for these laterholes was offset about 2,600 feet southwest.

A single coal group of economic importance was intersected in both drillholes MC-8 and MC-9, but positive correlation was not possible. Stratigraphicevidence, such as distance of the coal groups below the Eska Conglomerate,thickness of coal groups, appearance, and arrangement of coalbeds within eachcoal group, and stratigraphic position of a zone containing a red hematiteand/or limonite silt strongly indicate intersection of the Jonesville coalgroup by drill hole MC-8 and intersection of the Premier coal group by drillhole MC-9 as illustrated in figure 7, section E-E. However, evidence of thestructural complexity necessary to account for absence of a major coal groupfrom each of the drill holes is lacking, and no satisfactory explanation hasbeen devised. Loss of drilling fluid and heavy ground at about 775 feet holedepth in MC-8 indicated a strong fault intersection that may have eliminated thePremier coal group from the drilled section in this hole. A more plausibleinterpretation of the failure to intersect two coal groups in holes MC-8 andMC-9, but one supported by less conclusive stratigraphic evidence, is that thetwo groups were blended at the time of deposition. If this interpretation iscorrect, a normal fault between the drill holes would account for the structuraldiscordance.

Drill hole MC-10 penetrated typical Chickaloon formation sediments to atotal depth of 802 feet without intersecting any coal measures of economic im-portance. By projecting hole MC-9 dip angles, MC-10 should have intersectedat shallow depth the same coal group as that intersected in MC-9. However, thiswas not true; the dip angles intersected in MC-10 had steepened considerably.Therefore, investigators believe that the coal group outcrops under the morainesome distance short of drill hole MC-10. Drill hole MC-10 intersected severalcoal measures of noneconomic importance which may be members of the Eska andBurning Bed coal groups (fig. 7, section E-E).

627316 0-62 -3

30

Drill holes MC-8, 9, and 10 each intersected a zone of Chickaloon forma-tion containing iron minerals that give a conspicuous red color to a strati-graphic interval of approximately 60 feet. The zone probably is located justbelow the Premier coal group and appears to be correlative between drill holes.A sample, representative of most of the zone, was submitted for petrographicand chemical analyses and was classified as an illite shale containing acid-soluble iron in the amount of 6.9 percent (principally in the form of eitherlimonite or hematite). As a result of these analyses and because similarappearing zones were encountered in other drill holes, a more detailed studywas initiated. Selected samples from several holes were submitted for adetailed correlation study1 7 by means of micropaleontology and sedimentarypetrography techniques. Because of timelag between actual core recovery andcollection of these later samples, samples had to be selected from hard, moredurable bands within the reddish-colored zone. (Drill cores, other than coalsections, were laid out in unprotected core gardens adjacent to the drill holeand thus were subject to weathering. The shale portion of the zone weathersto an indistinguishable mass not suitable for representative sampling). Thesamples selected for special study contained acid-soluble iron (siderite) inamounts ranging from 23.2 to 29.8 percent. The results of the study follow:

Through this study it was found that no microfossils, heavyminerals, or other prominent correlation features are present inthe four submitted samples. Consequently, it was not possible toestablish a definite age relationship between these materials. Thesamples, however, are all mineralogically and megascopically similarconsisting primarily of illite with varying amounts of siderite andchlorite. In addition, the composition of the siderite seems to beessentially the same in all four samples. This is reflected bothby a similarity of differential thermal curves and the consistencyof indices of refraction of the siderite. Normally, variationsin the substitution ratio of magnesium, manganese, and calcium toiron would be expected in siderite derived from different deposits.Therefore, it is strongly indicated that the materials are at leastvery closely associated, and there is a good possibility that theycould have been deposited contemporaneously.

Even though this study does not offer conclusive evidence on which to lbase correlation, the results are probably sufficient for use as an aid inassigning the coal intersections to a coal group and/or in determining theposition of hole intersection stratigraphically with the Chickaloon formation.

Drill Holes MC-11 and MC-16

Drill holes MC-11 and MC-16 are located within the projected boundariesof the Baxter and Premier faults. They were planned to locate the south limbof the syncline within this major fault block (see fig. 6 for plan location).Drill hole MC-11 was churn drilled to a depth of 234 feet, 160 feet of whichwas logged as variable glacial overburden; the remainder of the hole inter-sected typical sandstone and claystone of the Chickaloon formation. No coredrilling was done in this hole.

1 Conducted by Hess, Harold D., supervising geologist, Bureau of Mines,Albany, Oreg.

31

Diamond-drill hole MC-16 is located approximately 500 feet toward thesynclinal axis from drill hole MC-11. Hole MC-16 intersected five minor coalhorizons, all of which were narrow and not considered important economically.Although no correlative marker beds were intersected to definitely establishstratigraphic relationship, the narrow coalbeds encountered in this hole pro-bably are members of the Eska and/or Burning Bed coal groups. Apparently holeMC-16 is located east of the moraine-covered outcrop of the productive Jones-ville or Premier coal groups. Previous to core drilling, identification ofchurn-drill cuttings had indicated intersection of conglomerate from a depthof 180 to 231 feet. However, subsequent core drilling to a total depth of599 feet disclosed no conglomerate of either the Eska or Tsadaka variety.Either identification of the churn-drill cuttings was wrong or-any conglomer-ate penetrated was of the Tsadaka variety that unconformably overlies the EskaConglomerate and/or the coal-bearing Chickaloon formation (fig. 9, section G-G).

Drill Holes MC-12

nnun-f_i Throuah MC-15.__L, - ,

and MC-17

Drill holes MC-12through MC-15, and MC-17were located along a sec-tion south of the Premierfault in an attempt tolocate possible southlimb extensions of bedsworked in the Premiermine (see fig. 6 for planlocation). Drill holesMC-12, 13, and 17 werechurn drilled to depths

0 200 400 Individual seam or band of 180 feet, 0 feet, andT! Siia of coal in drill hole of 180 feet, 160 feet, and

Scale in Feet 91 feet, respectively,tin with no following coreFIGURE 9. -Section G.G, Drill Holes MC-11 rillin Because of

and MC-16. drilling. Because ofdifficult drilling con-ditions encountered in

the galcial overburden, hole MC-13 was abandoned before reaching bedrock. Asidentified from churn-drill cuttings, the bedrock in holes MC-12 and MC-17indicated that these holes were. unfavorably located for subsequent coredrilling. Drill holes MC-15 and MC-14 were continued by core drilling todepths of 1,046 feet and 648 feet respectively, and in the order listed.

Drill hole MC-15 encountered several coal horizons, the uppermost of whichwas of considerable thickness; the coal horizons are well east of what was pre-viously considered to be the limit of the south limb beds in this area. Theother coal horizons encountered in the hole were comparatively narrow and notconsidered important. Because of the absence of a known correlative marker,the stratigraphic position of the uppermost coal horizon has not been definitelyestablished; however, stratigraphic evidence observed in the core indicates thatassignment to the Premier coal group is most logical. Bedding angles were steep

I32

in the upper part of the hole and gradually flattened toward the bottom, indi-cating local folding. The extent of folding, however, or its relationship tocoal measures contained in the old Premier mine workings has not been definite-ly determined. A possible solution is shown in figure 10, section F-F.

Drill hole MC-14was continued by coredrilling on the premisethat bedding inter-sected in hole MC-15was dipping towardhnle MC.-14.A virn+tlv

this premise was inerror. Hole MC-14 en-countered Tsadaka con-glomerate in the upperpart of the hole thatlies unconformably onChickaloon sediments.Three minor coal sec-

f~onc arn fnilnr w;+h- 20 4 600 -0 SECTION F-FVL

Scl In in the Chickaloon for-

FIGURE 10. - Section F-F, Drill Holes MC-12 ma t i o n b e l o w t h e c o n -Through MC-15 and MC-17. glomerate. However,

because of extremelateral variation in

bedding characteristics within a relatively short distance, definite correla-tion between holes MC-14 and MC-15 has not been determined. One possible cor-relative view is shown in figure 10, section F-F.

Drill Hole MC-18

Hole MC-18 was located to establish the position of coal measures on thesouth limb of the syncline within the major fault block bounded by the Buffalofault to the west. The hole was located close to the toe of the Eska Conglom-erate escarpment in order to intersect both the productive Jonesville andPremier coal groups. Coal was encountered from 80 to 347 feet. Althoughthe hole was drilled to a depth of 566 feet, no other coal seams were encoun-tered. The coal measures were tentatively identified as the Premier group;correlation was based, in part, on the presence of a section below the coalbedscontaining a red hematite and/or limonite silt which is similar to sectionsintersected in holes MC-7, 8, 9, and 10. A section view of hole MC-18 is shownin figure 11; the descriptive log and analyses of core samples are given inthe appendix.

Reserves

Estimates

The detailed estimates of reserves in the Wishbone Hill district publishedin Geological Survey Bulletin 1016 (previously cited) are based on knowledgegained from company mining operations, Geological Survey investigations, and

mMOMMEM

1

200

33

Bureau of Mines drilling and trenching. Estimates by the Geological Surveymade in 1952 are considered applicable at this writing (1960), except fortonnage mined since 1952, and except for an area between the Buffalo and Bax-ter faults in the western part of the district. Core drilling since 1952 hasadded considerably to the knowledge of this particular area with a resultantincrease in estimated reserves.

Drilling and trenching at other locations in the western part of thedistrict add considerable knowledge to the several areas and give evidence ofpossible additional reserves of economic importance, but the evidence is notclear enough or complete enough to justify a recalculation of the reserves.

istnnn

The method of calcu-lation and classificationused herein to estimatenew reserves conforms, ingeneral, to the methodused by the GeologicalSurvey in Bulletin 1016(previously cited). Be-cause of wide variationsin bed thickness (bothlaterally and downdip)within relatively shortdistances, correlationof individual beds isdifficult; therfore,calculations were madefor the Jonesville andPremier coal groups as awhole rather than by in-dividual beds. No at-tempt was made to dividethe beds into thicknesscategories (usuallystandard practice withBureau of Mines estimatesof coal reserves), but noreserves were calculatedfor beds containing lessthan a 14-inch thicknessof clean coal. In sev-eral of the previouslycited publications, re-serves were estimated forbeds underlying the Pre-mier group. However, inthe area considered, ad-ditional information onthese beds is scant, theliterature is somewhat

LEGEND

m9. Overburden

am Esko conglomerate

I I Chickaloon formation

Coal group in drill hole

0 200 400

Scale in Feet

FIGURE 11. - Section Through Drill Hole MC-18.

34

confusing, and no mine development or prospecting has been conducted; there-fore, recalculation of reserves was not attempted.

The usual standards for the classification of reserves as measured, indi-cated, and inferred have been modified to fit the local conditions. Althougha considerable tonnage in the immediate vicinity of the Buffalo mine is consid-ered well enough outlined to be classed as measured reserves, this tonnage hasbeen included with the indicated reserves to conform with the classificationmethods used for this area by the Geological Survey. The distinction betweenindicated and inferred reserves is based in part on the number and nature of thepoints of observations and in part on the judgment of the estimator; for esti-mation of indicated reserves, no group of coal seams was projected more than3,000 feet from a point of observation and, for inferred reserves, no more than4,000 feet from a point of observation. Using these criteria, reserves on thenorth limb were classed as indicated and those on the south limb as inferred.

A summary of previous estimates made by the Geological Survey and revisedestimates resulting from subsequent work by the Bureau of Mines is presented intable 4. Estimates by the Geological Survey were calculated for a more exten-sive area of the Wishbone Hill district than is covered by this report; onlythose estimates applicable to the area of coverage have been summarized in thetable.

Character and Quality

The coal throughout the Wishbone Hill district is of the same generalcharacter and quality but varies considerably within and between individualbeds, groups of beds, and areas. The rank is high-volatile B bituminous;however, an occasional analyses will indicate coal of high-volatile A bitumin-ous rank. These coals are generally considered to be noncoking, but freeswelling index and agglutinating index determinations performed on core sam-ples from the central part of the district indicate that some of the coal mayhave poor to fair coking and caking properties.

The principal difference between coal seams lies in the ash content; someare relatively clean, some inherently dirty, and others are dirty because ofthin high-ash partings.

The ash content of drill-core analyses (tables 5 and 6 in the appendix)range from a low of 1.5 percent to a high of 42.4 percent. A weighted averageof this range plus the high-ash core rejected before analyses would probablyroughly parallel the ash content of run-of-mine product currently entering thecoal washeries of the district, where as much as 50 percent of tonnage enteringthe washery is rejected as waste. The high reject results from strip-miningmethods that prevent selectivity. The quality of product from the washeriesmay be illustrated by the following contract specifications established formilitary procurement in fiscal year 1961.

35

MaximumMoistMine

Evan Jones(Eastern and central part of district)..........

Mrak Coal Co.(Eastern part of district).....................

Maximum MinimumAsh B.t.u.

12.5 12,500

13.0 12,687

8.5

7.5

The washing characteristics of the coals from the Evan Jones and Mrak mineshave been described by Geer and Yanceyhave been described by Geer and Yancey

18 Geer, M. R., and Yancey, H. F., Washability Characteristics and Washing ofCoals From the Matanuska Field of Alaska: Bureau of Mines Rept of Inves-tigations 3840, 1946, 17 pp.

I

36

TABLE 4. - Estimated coal reserves remaining in central and

western parts of Wishbone Hill district

Reserves (short tons)1

Geological Survey s Bureau of MinesCoal group Indicated I Inferred Indicated Inferred

North limb between Jonesville fault and Township line(Above 860 level, Evan Jones mine)

Jonesville group........ 2,500,000 --Premier group ........... 12,416,000 -- ...

(Below 860 level, Evan Jones mine)

Jonesville group ........ 4,440,000 ..Do ................. -- 5,280,000 .

Premier group ........... 3,465,000 ..Do ................. - 26,570,000 .

South limb west of Jonesville within 1,000 feet of drill holes 9 to 12

Jonesville group........ 2,365,000Premier group ........... 5,400,000 -- -

North limb between Township line and Buffalo fault

Premier group ........... -- 19,000,000 --

North limb between Buffalo and Baxter faults

Jonesville group ........ - - 7,700,000 --Premier group ........... 9,950,000 -- 26,500,000 --Midway bed .............. 624,000 -- -- --Eska group.............. 272,000 -- -- --Burning Bed group ....... 368,000 -- -- --

South limb between Buffalo and Baxter faults

Jonesville group ........ - 4,600,000Premier group. ......... -- 1-- -- 4,600,000

South of Premier fault (Above 500 level, Premier mine)

Premier group ........... 370,000

(Below 500 level, Premier mine)

Premier group........... -- 500,000

1 1 short ton = 25 cu. ft. in place.2 Barnes, Farrell F., and Payne, Thomas G., The Wishbone Hill District, Mat-

anuska Coal Field, Alaska: Geol. Survey Bull. 1016, 1956, 88 pp.,pp. 82 and 83.

3 Bureau of Mines revised estimates are total for the given area and includeGeological Survey estimates.

I

I

I

j

37

APPENDIX

The logs of drill holes are arranged in chronological order with respectto the part of the district where the drill holes were located; the sequenceis WH-1 through WH-14, MC-1 through MC-7, P-l, and MC-8 through MC-18. Underthe column headed "Remarks", the laboratory sample number is given for eachcoal intersection analyzed; in instances where a coal seam contained measurablepartings that were rejected, or where more than one bed was analyzed in thesame sample, subsequent intersections included in the sample are designated bya parenthesis mark.

Analyses of coal cores are given in tables 5 and 6; table 5 gives analysesobtained from the central part of the district and table 6, analyses from thewestern part of the district. Analyses are given in descending order ofintersection within each drill hole.

Part of the core drilling, churn drilling, part of the bulldozer-excavatedroads, and dragline trenching were accomplished by contract. As a guide tocost estimating for this type of exploration, several bid awards are quoted.

From-Denth

Ft. in.

C 0

44 0

127 0

133 0

150 0159 0

200 0

243 0

38

Logs of Drill Holes, Central Part of District

Log, Hole WH-1

Location:

Elevation:

165 feet N. and 305 feet E. of the W1/4 corner, sec. 20, T. 19 N.,R. 3 E., Seward Meridian, Alaska.

Collar of hole: 835.4 feet, mean sea level datum.

Dip of hole: Vertical.

-rI---

To-

Ft. in.

44 0

127 0

133 0

150 0

159 0200 0

243 0

262 0

Material

Overburden, conglomerateslide rock.

Coarse-grained Eska con-glomerate.

Medium-grained sand-stone.

Soft clay with claystonestreaks, bottom of Eskaconglomerate.

Claystone................Interbedded siltstone andarkose coarse-grainedspeckled sandstone.

Coarse-grained arkosesandstone.

Interbedded and crossbedd-ed siltstone, fine- andmedium-grained sandstone.

Conglomeratic sandstone...Coarse-grained sandstone..Conglomeratic sandstone...Bony COAL with streaks ofcoaly claystone.

Ironstone .................Bony COAL with streaks ofcoaly claystone.

Coaly claystone...........Claystone with streaks ofironstone.

Bony COAL with streaks ofcoaly claystone.

Coaly claystone...........No core, clayey claystone.COAL......................Bone......................COAL......................Bone ......................

Thickness

Ft. in.

44 0

83 0

6 0

17 0

941

00

43 0

19 0

Remarks

262265268270

0006

265268270271

0066

3321

0060

4

p271 6272 0

273 0275 6

285 0

272 0273 0

275 6285 0

287 0

61 0

29

66

Dip 30°.

Dip 20° to 30°.

Slickensides.

) D-22381.

287287294295295296

066344

287294295295296296

663445

2 0

67 0

91

1 01

)

From-Depth

Ft.

296296296296297297298299299299299300300301

in.

567

1003

102-236701

11

39

Log, Hole WH-1 (Con.)

318 0322 0

343343344345

0300

To-

322 0343 0

Ft.

296296296297297298299299299299300300301318

in.

67

1003

102-½36701

110

343344345351

3000

Material

COAL.......................Bone.......................COAL.......................Bone.......................Coaly claystone............Claystone.................COAL.......................Bone .......................COAL.......................Claystone.................COAL.......................Claystone.................COAL.......................Claystone with streaks ofsilty claystone.

Fine-grained sandstone.....Siltstone with streaks ofclaystone and ironstone.

Ironstone..................Coaly claystone...........Bony COAL..................Coaly claystone with thinstreaks of coal.

Ironstone..................COAL .......................Fine light-gray bentoniticsandstone with thin cross-bedded streaks of darksiltstone.

Fine- to medium-grainedsandstone.

Bentonitic siltstone.......Interbedded and cross-bedded clayey siltstone,fine- and medium-grainedsandstone.

Siltstone with streaks ofvery fine-grained clayeysandstone and ironstone.

Hard interbedded and cross-bedded fine-grained sand-stone and siltstone.

Silty claystone...........Medium-grained sandstone...Clayey shaly claystone.....

116

421

16

Thickness

Ft. in.

11323

1 7

4-I

3151

101

00

3900

)

)

) D-22382.

)

)

)

Dip 45°.

Soft.

Remarks

351 0351 3352 0

400 0

418 0437 0

463 0

493 0

508 0514 0515 0

351 3352 0400 0

418 0

437 0463 0

493 0

508 0

514 0515 0518 0

39

48 0

18 0

1926

00

30 0

15 0

613

000'

From-Depth

Ft.

518521522525527528

in.

009093

40


538 0

541 0

558 0

559 0

586 0

588 0

588 3592 0

605 0606 6

Ft.

521522525527528538

in.

090930

To-

541 0

558 0

559 0

586 0

588 0

588 3

592 0605 0

606 6607 0

Material

Claystone.................Coaly shaly claystone......Shaly claystone...........Bony COAL..................Clayey claystone..........Silty claystone withstreaks of ironstone.

Hard dense limestone andironstone with calcite

Claystone with streaks ofironstone and siltstone.

Hard medium-grained sand-stone.

Interbedded siltstone andvery fine-grained sand-stone with ironstonebands.

Claystone with coalystreaks.

Bony COAL with calcitebands.

Claystone.................Hard dense interbeddedsiltstone and fine-grainedsandstone with ironstonebands.

Shaly claystone............Slickensided claystone withcalcite and clay bands.

Ironstone..................Claystone.................COAL with streaks of bone..Claystone..................COAL with thin bonystreaks.

Ironstone with coaly clay-stone streak.

COAL.......................Claystone with ironstonebands.

COAL.......................Bone.......................Claystone.......................COAL.......................Ironstone..................

Thickness

Ft. in.

3 01 92 32 9

69 9

3 0

17 0

1 0

27 0

2 0

313

3

90

Remarks

Steep fractures.

Dip 70°.

Soft.Dip 45°.

Dip 30°.

Do.

Dip 20° to 30°.

I

U

1 66 I

607608612613614

00004

608612613614615

00041

1411

00049

3

25

615 1

615 4618 6

615 4

618 6626 11

Dip 20° to 30°.

) D-22383.

) D-22384.

38

626631631632632

110224

631631632632632

02249

4 12

1 025

From-Denth

Ft.

632633633634

635637637638638639640644644648649650650654654659662666

in.

96

100

41


268055906800206000

Ft.

633633634635

637637638638639640644644648649650650654654659662666672

in.

610

02

680559068002060000

To-To- Material

Bony COAL..................Ironstone..................Bony COAL..................Claystone with thin coalblebs.

COAL.......................Ironstone.................COAL.......................Claystone......................Coaly claystone................Ironstone..................Claystone.................Ironstone..................COAL.......................Ironstone and claystone....Claystone.................COAL .......................Claystone.................Bony COAL...................Claystone.................Ironstone..................Claystone.......................Interbedded and crossbeddedfine- and medium-grainedsandstone.

Interbedded siltstone andsilty claystone with car-bonized plant fragments.

Coaly claystone...........Claystone.................COAL with thin bonystreaks.

Claystone and coaly clay-stone.

COAL with thin bony streaksand calcite veinlets.

Coaly claystone............Hard dense siltstone.......Interbedded and crossbeddedsiltstone, clayey clay-stone, ironstone and sand-stone.

Siltstone with clayeystreaks.

Thickness

Ft. in.

942

1 2

2 4245

1 01 43 3

64 2

41 0

23 10

64 63 04 06 0

16 0

1 02 71 3

1 0

) D-22385.

)

) D-22386.

Dip 100 to 30°.

) D-22387.

)

Remarks

672 0

688 0689 0691 7

692 10

693 10

695 3695 4698 0

708 0

688 0

689 0691 7692 10

693 10

695 3

695 4698 0708 0

726 0

1

210

5

180

18 0

From-

Ft. in.

726 0

731 0

763 0769 0

805 0

810 0

817 0817 9818 0

826 0

839 0

843 0

DepthTo-

Ft. in.

731 0

763 0

769 0805 0

810 0

817 0

817 9818 0826 0

839 0

843 0

847 9

42


Material

Claystone with a few coalystreaks.

Very fine-grained sand-stone with thin clayeystreaks.

Fine-grained sandstone.....Medium- to coarse-grainedgray sandstone with darkspeckles.

Gray-white coarse-grainedconglomeratic sandstone.

Interbedded and crossbeddedclayey siltstone and veryfine-grained sandstone.

Claystone.....................Bone .......................Interbedded and crossbeddedfine-grained sandstone andclayey siltstone.

Hard dense siltstone thatweathers bentonitic.Medium- to coarse-grainedsandstone.

Dark claystone with streaksof coaly claystone.

Ironstone..................Claystone..................Bony COAL..................Coaly claystone...........Bony COAL..................Coaly claystone...........COAL.......................Coaly claystone...........Bony COAL..................Coaly claystone and bone...Claystone.................Bony COAL..................Coaly claystone and bone...Shaly clayey claystone.....Interbedded and crossbeddedfine-grained sandstone andsiltstone with ironstonenodules.

Shaly claystone...........

Thickness

Ft. in.

5 0

32 0

636

00

5 0

7 0

93

8 0

13 0

4 0

4 9

33 8

1194

1 895

103

3 91 2

920 93 0

1I

Remarks

847848851852853853855856856857857861862863884

908748416474630

848851852853853855856856857857861862863884887

087484164746300

) D-25051.

) D-25052.

No sample taken.

No sample taken.

I

a

887 0 889 0 2 0

From-

Depth

Ft.

889

in.

0

43


891 0

910 0

928 0

940 0

949 0

971 0

978 0

988 0

To-

Ft. in.

891 0

910 0

928 0

940 0

949 0

971 0

978 0

Material

Crossbedded medium-grainedsandstone.

Silty claystone grading in-to siltstone with a coalythin streak at 900 feet.

Medium- to coarse-grainedmassive light-gray-brownspeckled sandstone.

Interbedded and crossbeddedsiltstone and fine-grainedsandstone.

Coarse sandstone with con-glomeratic streaks.

Medium- to coarse-grainedgray sandstone with inter-bedded and crossbeddedfine-grained sandstonestreaks.

Shaly claystone with iron-stone nodules, slicken-sides.

Medium-grained sandstonewith streaks of fine-grained sandstone.

Shaly clayey claystone withsilty streaks, slicken-sides.

Thickness

Ft.

2

in.

0

19 0

18 0

12 0

9 0

22 0

Remarks

Average dip 45° .

Dip 45° to 60°.

7 0 Dip 30° to 600.

988

1004

0

0

10 0

16 0 Dip 30° to 45°.

Bottom of hole.

From-

Ft. in.

0 0

40 0

Denth

555762

000

44

Location:

Elevation:

Log, Hole WH-2

810 feet N. and 1,890 feet E. of the W1/4 corner of sec. 20,T. 19 N., R. 3 E., Seward Meridian, Alaska.



70 0

90 0

180 0

197 0

236 3236 11

248 0248 6

265 0

288 0

576270

000

r ---

To-

Ft. in.

40 0

'55 0

90 0

180 0

197 0

236 3

236 11248 0

248 6265 0

288 0

Material

Overburden, glacial drift,boulders, gravel, andsand; last 2 feet con-glomeratic.

Dark silty claystone withthin streaks of sandstone.

Ironstone..................Siltstone (80° fractures)..Dark claystone containingsmall coal blebs.

Siltstone with streaks ofironstone.

Crossbedded very fine-grained sandstone andsiltstone with blebs ofcoal and ironstonenodules.

Light-gray claystone withvery steep fractures orbedding.

Dark-black claystone andcoaly claystone with ver-tical fractures orbedding.

COAL.......................Dark-black claystone andcoaly claystone with ver-tical fractures and slick-ensides.

COAL.......................Dark-gray claystone withsteep fractures from 70°to vertical and slicken-sides.

Gray siltstone with occas-ional ironstone nodules.

Claystone with verticalfractures and flat bedding,silty near base.

258

000

Thickness

Ft. in.

40 0

15 0

20 0

90 0

17 0

39 3

811 1

616 6

23 0

14 0

Remarks

1

Dip 70°.

Dip 30° to 70°.Dip: 70° at 82feet; 600 at110 feet.

I

Dip 30°.

Dip 20° to 45°.

Fractures 300 to60°.

302 0

I

From-Depth

Ft.

302302

in.

06

45


348 0

400 0

420 0

447 0450 0

452 0

505 0

515 0

525 0

534 0

580 0

610 0

656 0

667 0

726 0727 0729 6

Ft.

302348

in.

60

To-

400 0

420 0

447 0

450 0452 0

505 0

515 0

525 0

534 0

Material

COAL.......................Claystone and silty clay-stone.

Siltstone with streaks ofsandstone and ironstone.

Silty fine-grained sand-stone.

Interbedded and crossbeddedfine- and medium-grainedsandstone.

Ironstone and limestone....Claystone with coalystreaks.

Light-gray medium-grainedsandstone with darkspecks.

Hard coarse light-graysandstone with quartz anddark speckles and carbon-aceous bands and inclu-sions.

Fine-grained silty sand-stone.

Hard coarse arkosic graysandstone with carbona-ceous bands and inclusions.

Very fine-grained siltysandstone.

Interbedded and crossbeddeddark siltstone and fine-grained sandstone.

Hard crossbedded light-graymedium-grained sandstonewith occasional blebs ofcoal.

Interbedded fine-grainedsandstone and siltstone.

Very fine-grained sandstonewith thin silty streaks.

Siltstone.................Coaly claystone and bone...Bony COAL..................

Thickness

Ft. in.

645 6

52 0

20 0

27 0

32

00

53 0

10 0

10 0

9 0

46 0

30 0

46 0

11 0

59 0

Remarks

Dip 5 .

Few steep frac-tures.

Dip 70° to 900.

Do.

Dip 60° to 80°.Do.

Dip 60° to 80°.No sample taken.

580 0

610 0

656 0

667 0

726 0

727 0729 6732 0

122

066

6Z7316 0 -62 -4

From-

Ft. in.

732 0

733 1

738 0

742 10

747 6

754 0756 0

Denth-r- --

To-Ft. in.733 1

46


738 0

742 10

Material

Coaly claystone withstreaks of bone.

No core, hole caving; COALand coaly claystone chipswashed up.

Coaly claystone withstreaks of ironstone andbone.


Slickensided coaly clay-stone with streaks ofbone.

Bony COAL..................Coaly claystone...........

Thickness

Ft. in.

1 1

4 11

4 10

4 8

6 6

2 01 0

Remarks

747 6

Dip 70 .

Dip 70 . Nosample taken.

Dip 70°.

No sample taken.

I

754 0

756 0757 0

Bottom of hole.

I

From-

Ft. in.

0 0

Depth

67828599102

,00000

47

Location:

Elevation:

Log, Hole WH-3

825 feet S. and 1,665 feet W. of the E1/4 corner of sec. 19,T. 19 N., R. 3 E., Seward Meridian, Alaska.



110 0115 0

120 0

163 0

165 0

166 6

828599102110

00000

To-

Ft. in.

67 0

115 0120 0

163 0

165 0

166 6

168 0

Material

Overburden, glacial boul-ders down to 35 feet, con-glomerate slide withcoarse sand to 67 feet.Hole started near the baseof Eska conglomerate.

Coarse-grained sandstone...Clay.......................Coarse-grained sandstone...Clay and sandstone.........Coarse arkosic sandstonewith occasional blebs ofcoal.

Light-gray siltstone.......Fine-grained sandstone andsiltstone.

Massive coarse-grainedlight-gray arkosic sand-stone with thin streaks ofmedium-grained sandstoneand occasional blebs ofcoal.

Coaly claystone with iron-stone nodules.

Bony COAL with streaks ofcoal and coaly claystone.

Claystone with streaks ofcoaly claystone.

Bone .............. .........Ironstone..................Coaly claystone............Ironstone with coal inclu-sions.

Bony COAL..................Claystone and silty clay-stone with thin streaks ofcoaly claystone, slicken-sides on bedding.

Thickness

Ft. in.

67 0

15314

38

55

00000

00

43 0

2 0

Remarks

1 6

168168168170

0693

168168170170

6936

1 6

63

1 63

Dip 30°.

Do.

Dip 30°.Do.

170 6173 0

173 0190 0

217

60

From-

Denth

Ft. in.

190 0

210 0220 0234 0

240 0245 0

251 0

272 0

287 0

298 0

325 0

335 0

345 0347 0348 0

349 0351 0351 6

354 6

356 0

360 6

361 6362 0

364 0

48


To-

Ft. in.

210 0

220 0234 0240 0

245 0251 0

272 0

287 0

298 0

325 0

335 0

345 0

347 0348 0349 0

351 0351 6354 6

356 0

360 6

361 6

362 0364 0

365 3

Material

Siltstone with streaks offine-grained sandstone andsilty claystone.

Fine-grained sandstone.....Siltstone..................CrosSbedded fine-grainedsandstone.

Silty claystone............Coaly claystone withstreaks of coal and bone.

Fine-grained sandstone withclayey streaks and iron-stone.

Siltstone with ironstonenodules and carbonizedleaf fragments.

Interbedded and crossbeddedfine-grained sandstone andsiltstone.

Interbedded siltstone, sil-ty claystone and ironstone,and claystone with carbon-ized leaf fragments.

Interbedded siltstone andfine-grained sandstone.

Claystone with ironstonenodules.

Coaly claystone...........Claystone.................Interbedded coaly claystoneand bone.

Claystone.................Ironstone..................Bony COAL and coaly clay-stone.

Bony COAL with coaly clay-stone.



Coaly claystone...........COAL with thin streaks ofbone.

Bony COAL..................

Thickness

Ft. in.

20 0

10146

56

000

00

21 0

15 0

11 0

27 0

10 0

10 0

I

Dip 20°.

Remarks

Dip 10° to 30°.

Dip 30 o .

Do.

211

000

a

2 06

3 0

1 6

4 6

1 0

62 0

1 3

Dip 20° to 300.

Dip 30°.

From-Depth

Ft.

365366

367368368368384384

386386387388

in.

30

49


736909

31036

389 9390 2

402 0

419 0430 6

433 1

447 0

460 0465 0467 6

Ft.

366367

368368368384384386

386387388389

To-

369093

10369

in.

07

390 2402 0

419 0

430 6433 1

447 0

460 0

465 0467 6470 0

Material

Claystone.................COAL with very thin streaksof bone and coaly clay-stone.

Claystone.................COAL.......................Ironstone..................Claystone.................COAL.......................Claystone with coaly clay-stone streak.

Bony COAL..................Claystone.................COAL ......................Bony COAL and coaly clay-stone.

Ironstone..................Claystone with streaks ofironstone.


Silty claystone...........Coaly claystone with thinstreaks of coal.

Claystone with ironstonenodules and coaly streaks.


Silty claystone............Clayey shaly claystone.....Bentonitic claystone withcalcite veinlets.

Siltstone.................Claystone.................COAL .......................Claystone.................Coaly claystone...........Ironstone..................COAL ......................Ironstone..................Claystone. .................COAL.......................

11

Thickness

Ft. in.

91 7

833

15 39

1 6

7533

511 10

17 0

Remarks

)

)

) D-22820.

) Dip 25°.Dip 300.

)

Slickenside.Do.

D-22819.

112

67

13 11

13 0

522

066

470473475476477478478479480482

0006669933

473475476477478478479480482483

0066699339

3 02 01 61 01 0

31 0

62 01 6

From-

Depth

Ft.

483

in.

9

50


486 9492 0493 0

494 6495 0

532533534534535536538

0604600

552 0

555 0

565 0

576 0

582 0

594 0

596 0

610 0

633 0

642 0

680 0

492 0493 0494 6

495 0532 0

533534534535536538552

6046000

To-

Ft. in.

486 9

Material

Coaly claystone withstreaks of ironstone andcoal.

Shaly claystone...........Coaly claystone............COAL with thin streaks ofironstone.

Coaly claystone...........Shaly claystone with thinstreak of coaly claystone,blebs of coal and iron-stone nodules.

Coaly claystone............Bony COAL..................Claystone.......................Bony COAL..................Ironstone.................Clayey shaly claystone.....Claystone with streaks ofcoaly claystone.

Fine-grained sandstone andsiltstone.

Claystone with thin streaksof coal and clay.


Bentonitic silty clay-stone.


Bentonitic silty clay-stone.


Green shaly silty clay-stone.

Clayey claystone (bentoni-tic).

Interbedded fine-grainedsandstone.

Clayey claystone...........

511

306

555 0

565 0

576 0

582 0

594 0

596 0

610 0

633 0

642 0

680 0

681 0

Thickness

Ft. in.

3 0

637 0

1 664

1 20 62 0

14 0

3 0

10 0

11 0

6 0

12 0

2 0

14 0

23 0

9 0

38 0

1 0

1

Remarks

Dip 30°. Slick-ensides.

Dip 200.

I

Slickensides.

Dip 20°.

Bentonitic.

From-....

Deoth

Ft.

681

in.

0

51


689 0

705 0

778 0778 6794 0

832 0

846 0

850 0851 0852 0

853 0

858 0862 0

864 0

884 0

934 0945 0

946 0949 0

To-

Ft. in.

689 0

705 0

778 0

778 6794 0832 0

846 0

850 0

851 0852 0853 0

858 0

862 0864 0

884 0

934 0

945 0946 0

949 0961 0

Material

Clayey bentonitic silt-stone.

Interbedded and crossbeddedclayey siltstone and fine-grained sandstone.

Medium- and coarse-grainedlight-gray sandstone withdark speckles.

Conglomeratic sandstone....Fine-grained sandstone.....Silty claystone withstreaks of claystone andthin coaly streaks.

Very fine-grained sand-stone.

Interbedded silty claystoneand siltstone and thinstreaks of coaly claystone.

Ironstone..................Silty claystone...........Coaly claystone withstreaks of bone.


Dark claystone............Bony COAL with thin streaksof coaly claystone.

Claystone with very thincoaly streaks.

Interbedded siltstone,fine-grained sandstone,and claystone with occa-sional ironstone.

Claystone.................Ironstone with verticalcalcite veinlets.

Claystone.......................Interbedded siltstone andfine-grained sandstone.

Claystone and silty clay-stone with ironstonebands.

Bone with streaks of coalyclaystone.

Thickness

Ft. in.

8 0

16 0

73 0

1538

660

14 0

4 0

111

000

Dip 20° to 30°.

Dip 10° to 30°.

Do.

Remarks

5 0

42

00

20 0

50 0

111

312

00

00

961 0

984 0

984

985

0

0

23 0

1 0

From-

Ft. in.

985 0

1007 0

1047 0

1052 0

1106 01108 0

1109 0

Depth

112011211136

11741175117511751175

000

00358

52


Ft.

1007

1047 0

1052 0

1106 0

1108 01109 0

1120 0

To-

in.

0

112111361174

11751175117511751192

000

03580

Material

Interbedded claystone andsiltstone with ironstonebands.

Interbedded and crossbeddedsiltstone, fine- and med-ium-grained sandstone.

Claystone with thin coalystreaks.


Claystone.......................Bony COAL with calciteveinlets.

Claystone with thin coalystreaks and ironstone nod-ules.

COAL.......................Silty claystone............Interbedded siltstone,fine- and medium-grainedsandstone.

Claystone.......................COAL.......................Ironstone..................COAL.......................Claystone with thin coalystreaks and ironstonebands.

Interbedded medium-grainedsandstone and siltstone.

Claystone with silty andcoaly streaks.


Claystone with siltystreaks.


Claystone with thin clayeystreaks.

Clayey claystone...........Interbedded and crossbeddedmedium- and fine-grainedsandstone and siltstone.

40

54

21

11 0

11538

Thickness

Ft. in.

22 0

0

5 0

0

00

000

Remarks

1192 0

1200 0

1208 0

1213 0

1222 0

1228 0

1238 01239 0

1200 0

1208 0

1213 0

1222 0

1228 0

1238 0

1239 01271 0

1 0323

16 4

8 0

8 0

5 0

9 0

6 0

10 0

Dip 20°.

i

Dip 20°.

132

00

I

From-Depth

Ft.

1271

in.

0

53


1273 0

1298 0

1305 01306 0

1342 61344 0

Ft.

1273

in.

0

To-

1298 0

1305 0

1306 01342 6

1344 01358 0

Material


Interbedded fine- and med-ium-grained sandstone andsiltstone.

Claystone with clayeystreaks.

Bony COAL..................Interbedded siltstone,silty claystone and clay-stone.

Clayey claystone..........Interbedded siltstone,silty claystone and clay-stone.

Thickness

Ft. in.

2 0

25 0

7 0

Remarks

Dip 10°.

Dip 20°.1

36

114

06

60

Bottom of hole.

From-

Deoth

Ft.

0

in.

0

54

Location:

Elevation:

Log, Hole WH-4

305 feet S. and 680 feet W. of the El/4 corner, sec. 19,T. 19 N., R. 3 E., Seward Meridian, Alaska.



56 0132 0

133 0

153 0

184 0

192193195196202

06600

193195196202205

To-

Ft. in.

56 0

132 0133 0

153 0

184 0

192 0

66000

Material

Conglomerate slide, graveland sand.

Eska conglomerate..........Silty very fine-grainedsandstone.

Greenish coarse-grainedsandstone with whitespecks.

Fine- to medium-grainedsandstone with thin siltystreaks and scattered leaffragments.

Silty claystone gradinginto claystone.

Coarse-grained sandstone...Claystone..................Clayey shaly claystone.....Claystone.......................Green medium-grained sand-stone with hard soapy claystreaks.

Light-gray clayey lime-stone.

Silty claystone............Reddish tuffaceous siltyfine-grained sandstone.

Silty claystone............Shaly claystone gradingdown into silty claystone.

Siltstone with thin sandystreaks.


Coarse-grained green sand-stone with white bands andspecks.

Thickness

Ft. in.

56 0

761

00

20 0

31 0

8 0

12

63

32

46

60600

3

90

00

Remarks

Slickensides. I

1

Dip 15°.ensides.

Slick-

Slickensides.Do.Do.

205 0

205 3209 0

211 0215 0

221 0

231 0

233 6

205 3

209 0211 0

215 0221 0

231 0

233 6

I

10 0

2 6

34 6

Slickensides.

Dip 20°.

Dip 30°.268 0

From-

Ft. in.

268 0

370 0

371 6372 0

374 0377 0

Deoth

386392392393394

00330

55


395 9398 U398 9

401 0

416 0

417 6

392392393394395

03309

To-

Ft. in.

370 0

371 6

372 0374 0

377 0386 0

Material

Coarse-grained conglomera-tic sandstone with thinfine- and medium-grainedsandstone streaks.

Bony COAL with thin iron-stone streaks.

Coaly claystone............Claystone with streaks ofcoaly claystone.

Claystone................Siltstone with streaks ofvery fine-grained sand-stone.

Claystone..................Coaly claystone...........COAL.......................Claystone.......................COAL with very thin streaksof bone and coaly clay-stone.

Claystone.................COAL.......................Claystone with thin siltyand sandy streaks.

Light-gray medium-grainedsandstone with darkspeckles.

Claystone with ironstonebands and clayey streaksand pyrite nodule.

Coaly claystone with thinstreaks of coal.


COAL.......................Bone.......................COAL.......................Ironstone..................COAL.......................Dark gray siltstone........COAL.......................Bone.......................COAL.......................Ironstone..................

398 0398 9401 0

416 0

417 6

419 3

419 9

39

Thickness

Ft. in.

102 0

1 6

62 0

6 03

1 09

1 9

2 39

2 3

15 0

00

Dip 10° to 20°.

) D-25130.

)

Redrilled to 440feet.

Dip 200.

Dip 200 to 30°.

) D-25456.

)

)

)

)

Remarks

1 6

419

419420420420420422422423423425

3

902570425

11

420420420420422422423423425425

02570425

1111H2

1 9

6

3232

1 54

103

2 6

12

From-

Depth

Ft.

425427427

in.

56

56


428 6429 10

430 2

433433433434434438438

05

113639

440 0440 3

429 10430 2

433 0

Ft.

427427428

in.

566

433433434434438438440

511

36390

To-

440 3445 0

Material

COAL.......................Bone..................... ......Coaly claystone withstreaks of coal.

Claystone.................Coaly claystone...........

COAL with thin calciteveinlets.

Claystone.................Bony COAL..................COAL.......................Folded ironstone and bone..COAL.. ..................Coaly claystone and bone...Shaly claystone withstreaks of coaly clay-stone.

Coaly claystone...........COAL with thin streaks ofbone and limey veinlets.

Coaly claystone............Folded coal and ironstone..Clayey shaly claystone.....Claystone with coalystreaks.

COAL with thin streaks ofbone.

Coaly claystone withstreaks of coal and iron-stone.

Clayey shaly claystone with60° to vertical fractures.

Interbedded and crossbeddedfine-grained sandstonewith many leaf fragments.

Claystone with ironstonenodules.

Clayey claystone..........Bentonitic claystone.......Claystone..................COAL.......................Claystone ...................Coaly claystone withstreaks of bone.

Thickness

Ft. in.

1 5½1

1 0

1 44

2 10

5643

3 96

1 3

34 9

) D-25457.Dip 30° to 45°. *1

) D-25458.

) D-24784.

Niggerhead.Dip 45°.

) D-25131.

Remarks

)

445445447460

0600

445447460461

6009

1131

6609

6461 9

463 3

466 0

480 0

491 0

463 3

466 0

480 0

491 0

495 6

1

Ar2 9

14 0

11 0

4 6

I

Slickensides.

) D-25132.

495497499501503504

666800

497499501503504504

668009

22211

002409

From-

Depth

Ft.

504505

in.

91

57


505 4507 4

507508510512512514

622670

515 0

521 0

527 0

529 6530 6

531 9532 2532 9

540 0

549 0

560 0

572 0

581 0

582 0

507 4507 6

Ft.

505505

in.

14

508510512512514515521

2267000

To-

527 0

529 6

530 6531 9

532 2532 9540 0

549 0

560 0

572 0

581 0

582 0

585 0

600 0

605 0606 0

Material

Claystone.................Coaly claystone withstreaks of bone.

COAL ......................Coaly claystone with iron-stone nodules.

Sandy ironstone............Claystone.................COAL.......................Coaly claystone............Claystone.................Ironstone..................Claystone with thin streaksof coaly claystone andbone, slickensides.

Claystone with slickensidesat 600.

COAL with white limeystreaks.

Folded ironstone and bone..COAL with 1-inch ironstonenodule.

Folded ironstone and bone..COAL .......................Clay shaly claystone withslickensides and fracturesat 600.

Siltstone and fine-grainedsandstone.

Claystone with thin coalyand clay streaks.

Silty claystone and clay-stone with very thin coalystreaks and slickensides.

Medium-grained gray sand-stone.

Bentonitic clayey shalyclaystone.

Shaly claystone with slick-ensides.

Very fine-grained sandstonewith silty streaks.

Shaly clayey claystone.....Bony COAL..................

22

116

Thickness

Ft. in.

43

2 02

8041500

6 0

2 6

11

03

)

) D-25133.

Dip 30°.

Dip 30° to 450,

) D-24785.Dip 30°.

Niggerhead.

)

Remarks

57

7 3

9 0

11 0

12 0

9 0

1 0

3 0

15 0

ipDip

Do.

30° to 45°.

585 0

600 0605 0

51

00

Slickensides.

I

From-

Deoth

Ft.

606

in.

0

58


645 0

672 0

720 0721 0

725 0

732 0

743 0

800 0

826 0830 0

850 0

870 0

877 0

964 0

r -

To-

Ft. in.

645 0

672 0

720 0

721 0725 0

732 0

743 0

800 0

826 0

830 0850 0

Material

Massive crossbedded and in-terbedded medium- to fine-grained clayey gray sand-stone.

Massive fine-grained sand-stone.

Massive medium-grainedsandstone with darkspeckles.

Bony COAL.................Fractured shaly claystonewith many slickensides.

Hard dense siltstone withslickensides.

Shaly claystone with slick-ensides.

Green hard dense slatysiltstone with slicken-sides, streaks of fine-grained green sandstoneand an occasional reddish-brown nodule with whitecalcite veinlets.

Interbedded siltstone andsilty claystone withstreaks of ironstone.

Fine-grained sandstone.....Interbedded siltstone andsilty claystone withstreaks of ironstone.

Fine-grained sandstone withclayey or tuffaceousstreaks.

Gray fine-grained sandstoneinterbedded and cross-bedded with dark siltstonecontaining carbonizedplant fragments.

Massive gray medium-grainedsandstone with darkspeckles.

Silty claystone and clay-stone with thin coalystreaks.

Thickness

Ft. in.

39 0

27 0

48 0

14

00

7 0

11 0

57 0 Dip 20° to 45°.

Dip 30°.

Remarks

26 0

870 0

420

20

7

87

00

0

ODip 20° to 30°.

Do.

8770 0

964 0

974 0

0

0

10 0

1

From-

Ft. in.

974 0975 0

983 0987 0

Deoth

To-

Ft. in.

975 0983 0

987 0998 0

59


Material

Bony COAL..................Interbedded and crossbeddedgray fine-grained sand-stone and dark siltstonewith carbonized plantfragments.

Silty claystone ............Interbedded and crossbeddedgray gine-grained sand-stone and dark siltstone.

Thickness

Ft. in.

1 08 0

4 011 0

Remarks

Bottom of hole.

From-

Depth

Ft.

0

in.

0

60

Log, Hole WH-5

Location:

Elevation:

470 feet N. and 1,130 feet E. of the W1/4 corner, sec. 20,T. 19 N., R. 3 E., Seward Meridian, Alaska.



106 0109 0

130 0

135 0

139 0

154 0156 0

167 0

177 0

186 0

218 0

Ft.

106

in.

0

To-

109 0130 0

135 0

139 0

Material

Overburden, conglomerateboulders, 10 to 19 feet,conglomerate slide rockand some glacial till withglacial silt from 30 to 98feet.

Soft sandstone............Interbedded and crossbeddedgray medium-grained sand-stone and dark silty fine-grained sandstone (No core106 to 116 feet).

Hard dense gray sandstonewith dark-green speckles.


Massive gray medium-grainedsandstone with darkspeckles.

Conglomeratic sandstone....Medium-grained sandstonewith dark silty streakscontaining plant frag-ments.Gray coarse-grained to con-glomeratic sandstone withdark and green speckles.

Medium-grained gray sand-stone with dark siltystreaks.

Coarse conglomeratic sand-stone with silty and fine-grained sandstone streaks.

Interbedded and crossbeddedmedium- and fine-grainedsandstone and siltstone(In p Vn+ r Af Ln-i f r 990

154 0

Ft.

106

321

00

5 0

4 0

15 0

in.

0

Thickness Remarks

I

i

156 0167 0

177 0

186 0

218 0

240 0

211

00 Dip 30°.

I

I

10 0

9 0

32 0

22 0

Iu Ifeet).s

feet).

From-Depth

Ft.

240

in.

0

61


253 0

294298301331335339340342346346347348348348

060005

10079

10023

To-

Ft. in.

253 0

294 0

298301331335339340342346346347348348348351

60005

10079

100230

Material

Coarse-grained conglomeratesandstone.

Gray medium-grained sand-stone with dark fine-grained sandstone streakscontaining carbonizedplant fragments.Siltstone.................Eska conglomerate..........Silty claystone...........Calcareous siltstone.......Claystone..................COAL.......................Light-gray claystone.......COAL.......................Bone .......................COAL.......................Bone.......................Claystone.................Shaly clayey claystone.....Claystone with thin coalyclaystone streaks.

Silty claystone with anoccasional ironstone nod-ule and carbonized plantfragments.

Interbedded and crossbeddedmedium- and fine-grainedsandstone grading down tosiltstone.

Silty claystone with iron-stone bands.

Interbedded sandstone andsiltstone.

Silty claystone and clay-stone.

Dark claystone with coalblebs.

COAL with thin bonystreaks.

Claystone.................COAL with thin bonystreaks.

Ironstone..................

Thickness

Ft. in.

13 0

41 0

351 0

370 0

384 0

387 0

390 0

400 0

401 6

402 3402 9

403 5627316 0 -62 -5

370 0

384 0

387 0

390 0

400 0

401 6

402 3

402 9403 5

403 6

4 62 6

30 04 04 51 51 24 7

21 1

221

2 9

19 0

14 0

3 0

3 0

10 0

1 6

9

68

1

Dip 30°.

Dip 20°.) D-25176.

) D-25175.

)

Dip 200.

Dip 100 to 20°.

) D-25460.

Remarks

From-

Denth

Ft.

403

in.

6

62


406 7

407407408408409409409409410410411411412412

416416418420

4102

10155i7t085979

61106

Ft.

406

407 4

To-

in.7

407408408409409409409410410411411412412416

416418420423

102

1015

7½0859796

11065

Materials

COAL with two very thinnodules.

Siltstone with ironstonebands and coal blebs.

COAL.......................Coaly claystone...........COAL.......................Silty ironstone............Bony COAL..................Ironstone..................Bony COAL..................Coaly claystone............COAL .....................Coaly claystone...........Claystone......................Coaly claystone............Bony COAL..................Shaly claystone with car-bonized plant fragments,slickensides 30° to 60°.

Ironstone.................Coaly claystone...........COAL...........................Bony COAL with thin streaksof ironstone and coalyclaystone.

Coaly claystone...........Folded bony COAL with iron-stone and coaly claystone.

Shaly clayey claystone.....Ironstone.....................Claystone with folded blebsof coal, slickensidesfractures 30° to 80°.

COAL.......................Shaly claystone with foldedblebs of coal and slicken-sides (fractures 30° to80°, 440 to 450 feet) (dip300, 450, and 600).


Ironstone with calciteveinlets dipping 45° to60o.

Thickness

Ft. in.

3 1

9

64834

124894

102

3 9

-

122

51611

) D-25461.

)

Dip 30°.

) D-25459.

I

Remarks

423 5424 3

426 5427 6428 0

435 0435 3

448 0

454 0

424 3426 5

427 6428 0435 0

435 3448 0

454 0

455 0

102 2

1 16

7 0

312 9

6 0

1 0

I

a

Bedding 60° to80°.

S

From-

Ft. in.

455 0

465 0

471 0473 0

483 0

493 0

500 0500 6504 0

505 0

510 0

515 0

553 0553 6

554 0554 6

575 0

Deoth

To-

Ft. in.

465 0

471 0

473 0483 0

493 0

500 0

500 6504 0505 0

510 0

515 0

553 0

553 6554 0

554 6575 0

63


Material

Interbedded siltstone andsilty claystone.

Hard dense limey fine-grained sandstone inter-bedded with siltstone,slickensides.

Shaly siltstone............Hard dense sandy limestonewith calcite veinletscrossbedded and inter-bedded with siltstone(two or three oily cavi-ties in limey zones).

Interbedded and crossbeddedhard limey sandstone andsiltstone.

Folded shaly claystone withstreaks of coaly claystoneand coal (vertical beddingand slickensides).

Ironstone..................Claystone..................Folded shaly claystone withstreaks of coaly claystoneand coal.


Interbedded fine- to med-ium-grained sandstone.

Gray medium- to coarse-grained massive sandstonewith dark speckles occas-ionally silty and con-glomeratic streaks.

Claystone.......................Bony coal with calciteveinlets.

Siltstone.................Hard fine-grained graysandstone with dark siltystreaks and carbonizedplant fragments.

Medium-grained gray sand-stone with dark speckles.

Thickness

Ft. in.

10 0

6 0

210

00

10 0

7 0

Remarks

Dip 50°.

Do.

Slickensides.

Dip 45°.

Dip 10° to 30°.

Dip 30°.

Dip 20° to 30°.

31

660

5 0

5 0

38 0

66

620 6

19 6594 6.

I

From-Depth

Ft.

594594595595596597598598598

in.

690664056

64


600 3

604 9

606607607607

3379

610 0

614 0

616 0617 0620 0

624 0

637 0638 0638 3

639 3

645 0

664 6665 0

604 9

606 3

Ft.

594595595596597598598598600

in.

906640563

607607607610

3790

To- Material

Claystone..................Bony COAL..................COAL.......................Coaly claystone...........Bony COAL..................Ironstone..................Coaly claystone...........Ironstone..................Coaly claystone withstreaks of bone.

Shaly clayey claystonefolded and slickensides.


Bony COAL..................Bone and ironstone.........Coaly claystone...........Shaly claystone withstreaks of ironstoneslickensides.

Clayey shaly claystone withthin coaly streaks.


Silty claystone...........Hard dense siltstone.......Silty fine-grained sand-stone.

Silty claystone and clay-stone with ironstonebands.Shaly clayey claystone.....COAL .......................Very fine-grained sand-stone.

Clayey shaly claystone withcoal streaks.

Fine- to medium-grainedsandstone with siltystreaks.

COAL.......................Siltstone and very fine-grained sandstone with oc-casional ironstone nodule.

Thickness

Ft. in.

336

1 010851

1 9

4 6

1 6

1 042

2 3

Dip 20° to 30°.

I

Do.

611 to 614 feet,no core.

Remarks

614 0

616 0

617 0620 0624 0

4 0

2 0

134

000

637 0

638 0638 3639 3

645 0

664 6

665 0684 0

13 0

1 03

1 0

5 9

A

19 6

619 0 Dip 20°.

From-

Depth

Ft.

684

in.

0

65


Ft.

690

To-

in.

0

Material

Silty claystone with car-bonized leaf fragments.


Very fine-grained hardsilty sandstone.

Thickness

Ft. in.

6 0

Remarks

690 0

706 0

706 0

736 0

16 0

30 0 Dip 10° to 20°.

Bottom of hole.

From-

Deoth

Ft.

0

in.

0.

45 0

60 0

67 0

70 0

98 0

104 0

142 0

162 0166 0

177 0178 0

183 0190 0

66

Log, Hole WH-6

Location:

Elevation:

1,005 feet N. and 1,625 feet E. of the W1/4 corner, sec. 20,T. 19 N., R. 3 E., Seward Meridian, Alaska.



To-

Ft. in.

45 0

60 0

67 0

70 0

98 0

104 0

142 0

162 0

166 0177 0

178 0183 0

190 0196 0

Material

Overburden, conglomerateslide, large boulders,sand and gravel.

Interbedded and crossbeddeddark-gray sandstone anddark siltstone (1/2-inchpyrite at base).

Coarse-grained to conglom-eratic sandstone.

Siltstone with ironstonenodules.

Coarse-grained sandstonewith conglomeraticstreaks.


Massive coarse-grained toconglomeratic sandstonewith silty streaks nearbase and blebs of coal.


Fine-grained sandstone.....Very coarse-grained sand-stone occasional coalbleb.

Siltstone..................Hard conglomeratic sand-stone.

Coarse-grained sandstone...Interbedded siltstone andfine-grained sandstone.

Medium-grained sandstone...Conglomeratic sandstone....Medium-grained sandstone...Silty claystone............

38

20

411

15

76

121

182

Thickness

Ft. in.

45 0

15 0

7 0

3 0

28 0

6 0

Remarks

Dip 20°.

I

196208209228

0060

208209228230

0600

a

From-Depth

Ft.

230

in.

0

67


235 0237 0

249250252252

6005

254 2257 0

288 0

299 0

301 0

237 0249 6

Ft.

235

in.

0

250252252254

0052

To-

257 0288 0

299 0

301 0

311 6

Material

Medium-grained sandstonewith thin carbonizedstreaks.

Siltstone..................Coarse-grained conglomera-tic sandstone.

Claystone.................COAL with streaks of bone..Coaly claystone............Coaly claystone withstreaks of bone.

Siltstone..................Very fine-grained graysandstone with dark siltystreaks and carbonizedblebs.

Coarse-grained sandstonewith thin dark siltystreaks and carbonizedblebs.


Silty claystone gradingdown into claystone withironstone bands.

Bone and claystone.........COAL.......................Bone.......................Silty claystone...........COAL.......................Claystone.................COAL... ....................Bone.......................COAL.......................Claystone.................COAL.......................Bone.......................Silty ironstone............Coaly claystone............COAL.......................Bone.......................COAL ......................Dark-gray claystone withcoaly streaks and iron-stone concretions.

212

62 0

51 9

Thickness

Ft. in.

5 0

06

231

11

100

0

311311312312312315315316316316316317318318319319319320

68249

1011

56

10116093899

311312312312315315316316316316317318318319319319320321

8249

1011

56

1011

60938993

2 0

10 6

2625

3 116141769651

1 06

) D-29671.

) D-27206.

) D-27207.

) D-27207.

)

Remarks

From-

Depth

Ft.

321321321322

in.

310119

68


324 9325 0

327327328334

0930

337 0338 0

342 0342 3

370 0

381 0

383 0

325 0327 0

327 9328 3334 0337 0

338 0342 0

342 3370 0

381 0

383 0

383 5

Ft.

321321322324

in.

101199

To- Material

COAL.......................Bone.......................COAL.......................Coaly claystone withstreaks of coal and bone.

Ironstone..................Coaly claystone withstreaks of coal and bone.

Bony COAL..................Coaly claystone and bone...Claystone..................Very fine calcareous sand-stone.

Ironstone..................Siltstone with streaks ofironstone and leaf frag-ments.

Bony COAL..................Siltstone and silty clay-stone with streaks ofironstone and carbonizedleaf fragments.

Medium-grained sandstonewith ironstone nodules anddark silty streaks withcarbonized plant frag-ments.

COAL with thin bonystreaks.

Claystone with coalystreaks.

Bony COAL..................Coaly claystone............COAL.......................Medium-grained sandstone,coal particles near top.

Interbedded very fine-grained sandstone andsiltstone with ironstonebands and dark carbonizedplant fragments.

32 0

53

14

9690

00

Thickness

Ft. in.

71

102 0

327 9

11 0

2 0

5

1 106

1 54 10

19 0

Remarks

Dip 30° to 35°.

Dip 20°.

Dip 35°.

) D-27208.

)

)

I

9

383385385387

5392

385385387392

3920

) D-27209.

Dip 20° to 30°.392 0 411 0

Bottom of hole.

1

From-

Denth

Ft. in.

0 0

35 0

39 0

50 0

69

Log, Hole WH-7

Location:

Elevation:

770 feet N. and 2,270 feet E. of the S1/4 corner, sec. 19,T. 19 N., R. 3 E., Seward Meridian, Alaska.



50

535459

3

900

To-

Ft. in.

35 0

39 0

50 0

50 3

53 9

545965

000

Material

Overburden; soil and sandto 24 feet, fine sand andclay to 28 feet, conglom-erate to 32 feet, sand to35 feet.

Siltstone and very fine-grained sandstone witherratic large pebbles.

Silty claystone with car-bonized plant fragments.

Shaly clay with coal frag-ments.

Claystone with one coalbleb.

Clayey claystone...........Silty claystone............Siltstone grading intofine-grained sandstone(green).

Claystone with 600 to 80°fractures.


Siltstone..................Silty claystone and clay-stone with coal blebs from105 to 106 feet andblue-greenish cast.

Claystone.................Claystone with coalystreaks and blebs of coal.

Silty claystone............Shaly clayey claystone withcarbonized plant frag-ments.Silty claystone...........

Thickness

Ft. in.

35 0

4 0

11 0

3

3 6

56

300

Remarks

65 0

81 0

81 0

85 0

16 0

4 0

Crushed.

Dip 5o to 10°.

Crushed.

Dip 25°.

Do.

8586

00

86140

00

154

83

15

00

00

66

140 0148 0

151 0152 6

158 0

148 0151 0

152 6158 0

159 0 1 0

From-

Ft. in.

159 0

164 0

258 0

Denth

280281285288

0000

70


291 0

306 0

310 0

316 0

321 0326 0

327 6

345 0

356 0

358 0360 0362 0

365 0

373 0378 0

281285288291

0000

To-

Ft. in.

164 0

258 0

280 0

306 0

310 0

316 0

321 0

326 0327 6

345 0

356 0

358 0

360 0362 0365 0

373 0

378 0406 0

Material

Fine- to coarse-grainedcalcareous sandstone withcarbonaceous streaks andblebs.

Eska conglomerate (base ofEska conglomerate).

Massive green medium- tocoarse-grained beddedsandstone with whitespecks.

Conglomeratic sandstone....Silty claystone...........Fine-grained sandstone.....Slickensided reddish siltyclaystone.

Green chloritic medium-grained sandstone.

Conglomeratic green sand-stone.

Fine- to medium-grainedsandstone with dark siltystreaks.

Hard coarse-grained greensandstone.

Silty claystone............Medium-grained light-graysandstone.

Hard silty claystone withslickensides and verticalfractures.

Siltstone with carbonizedplant fragments.

Sugary (sacraoidal) sand-stone.

Siltstone.......................Claystone.......................Folded shaly clayey clay-stone with coal streaks atbase.

Silty claystone becomingshaly near base.

Fine-grained sandstone.....Green medium- to coarse-grained sandstone.

1433 0

15 0

4 0

6 0

5 0

Thickness

Ft. in.

5 0

94 0

22 0

000

Remarks

I

1

51

06

Dip 30°.

Dip 20°.17 6

11 0

2 0

9

223

000

8 0 Dip 10° to 20°.

Dip 20°.528

00

From-

Ft. in.

406 0

410 0417 0419 0

445 0

449 0468 0

470 0474 0

476 0

484 0

500 0509 0

515 0

Deoth

To-

71


Ft.

410

in.

0

417 0419 0445 0

449 0

468 0470 0

474 0476 0

484 0

500 0

509 0515 0

579 4

Material


Calcareous siltstone.......Limestone..................Silty claystone with car-bonized leaf fragments.

Medium-grained sandstonewith thin silty carbonizedstreaks and few coal blebs.

Conglomeratic sandstone....Fine-grained sandstone withdark carbonized siltystreaks.

Conglomeratic sandstone....Silty claystone with car-bonized plant fragments.

Medium- to coarse-grainedsandstone.

Soft medium-grained sand-stone.

Coarse-grained sandstone...Medium-grained sandstonewith thin dark siltystreaks with few carboni-zed plant fragments.

Coarse-grained to conglom-eratic gray sandstone withdark specks, blebs of coaland thin carbonizedstreaks.

COAL.......................Claystone..................Coaly claystone...........Ironstone..................Bony COAL..................Claystone..................COAL with thin streaks ofbone.

Claystone.................COAL.......................Ironstone and clay.........COAL.......................Ironstone..................COAL.. ....................

4 0

Thickness

Ft. in.

4 0

7226

000

192

42

00

00

8 0

16 0

96

Remarks

00

Dip 35° to 40°.

Dip 40°.

3-foot core.

) D-28276.

) D-28277.

)

)

579580584584584585585

586587587587589589

4036903

619

1112

580584584584585585586

587587587589589589

0369036

19

1112

11

64 4

84 3

3333

1 3

782

1 219

From-Depth

Ft.

589590591592593593

in.

110

10002

72


595 2595 7

596597597598

600602602605606606

109

114

606906

To-

595 7596 10

Ft.

590591592593593595

in.

0100022

597597598600

602602605606606607

91146

069060

Material

Ironstone.................COAL.......................Ironstone..................COAL.......................Ironstone..................COAL with a few calciteveinlets.

Clayey claystone..........COAL with thin bonystreaks.

Bony COAL..................Coaly claystone...........Claystone.................Coaly claystone with verythin coaly streaks.

Claystone.................Shaly clayey claystone.....Coaly claystone and COAL...Ironstone..................Bony COAL..................Dark claystone with streaksof coaly claystone.

Bony COAL..................Claystone with blebs ofcoal.

Coaly claystone...........Bony COAL..................

Coaly claystone ...........Claystone.................Interbedded fine-grainedsandstone and dark silt-stone with few carbonizedplant fragments and anoccasional ironstonenodule.

Siltstone with calcareousironstone bands.

Claystone.................Ironstone..................Dark claystone with streaksof coaly claystone.Interbedded and crossbeddedfine-grained sandstone andsiltstone.

Thickness

Ft. in.

0 11 10

21 0

22 0

51 3

1125

2 2

1 66

3 3366

31 1

82 8

Remarks

)

)

) D-28278.

Dip 20° to 35°.

)

Dip 30° to 40°.

6-inch core.

3

607 0607 3

608 4609 0

611 8611 10514 0

644 0

648 0651 0651 6

656 0

607 3608 4

609 0611 8

611 10614 0644 0

648 0

651 0651 6656 0

694 0

) D-28279.300.

Dip

230

220

4 0

3 06

4 6

38 0

Dip 20°.

I

Depth

From- I To-

Ft.

694694

in.

06

73


710 0

727 0

746747748750

0000

771 0

855 0

859 0860 0

727 0

746 0

Ft.

694710

in.

60

747748750771

0000

855 0

859 0

860 0869 0

Material

Bony COAL..................Siltstone with streaks offine-grained sandstoneand occasional ironstonenodule.

Fine- to medium-grainedsandstone interbedded withdark siltstone with car-bonized plant fragments.

Claystone with occasionalcarbonized plant fragmentsand silty streaks.

COAL .......................Coaly claystone...........Claystone.................Interbedded siltstone andsilty claystone with car-bonized plant fragments.

Gray medium-grained sand-stone with thin cross-bedded streaks of darksiltstone with carbonizedplant fragments.

Folded shaly claystone withvertical fractures andcoaly at base.

Ironstone..................Folded shaly claystone with600 to vertical fracturesand an occasional carbon-ized plant fragment.

Bony COAL..................Claystone.......................Bony COAL..................Folded shaly claystone with600 vertical fractures.

Ironstone..................Folded shaly claystone.....Bony COAL..................Folded shaly claystone with60° to vertical fractures.Dark claystone with thincoaly streaks and 60° to70° fractures.

Ft.

015

17 0

19 0

112

21

0000

Thickness

in.

66

84 0

4 0

Dip 25°.

Dip 55°

Dip 60° to 70°.

Dip 60° to 900.

Dip 30°.Dip 50°.

Dip 60° to 70°.

Remarks

19

00

869869869869

872872874874

0246

0602

869869869872

872874874879

2460

6026

222

2 6

61 6

25 4

3 0879 6 882 6

From-Depth

Ft.

882

883884885885886

890890894897

in.

6

74


90036

0660

898 9899 0899 5

899900902902903903904905908908

913914916917918

10007797002

00000

To-

Ft. in,

883 9

899 0899 5899 10

884885885886890

890894897898

00360

6609

900902902903903904905908908913

914916917918923

0077970020

00000

Material


Claystone..................Bony COAL..................Silty ironstone............COAL.......................Claystone with carbonizedplant fragments.

Ironstone..................Claystone..................Coaly claystone...........Claystone with thin coalystreaks

Claystone.......................Coaly claystone............Bony COAL..................

Silty ironstone............Bony COAL..................Coaly claystone............COAL.......................Silty ironstone............COAL.......................Coaly claystone............Claystone.......................COAL.......................Claystone with coalystreaks.

Medium-grained sandstone...Shaly claystone...........Bony COAL..................Claystone..................Interbedded and crossbeddedsiltstone and fine-grainedsandstone with many iron-stone nodules and coalblebs.

Conglomeratic sandstone....Interbedded and crossbeddedfine-grained sandstone andsiltstone.

Siltstone.......................Medium-grained speckledsandstone.

355

22 0

71 0

2105

3 02

4 10

421

Thickness

Ft. in.

1 3

31 0

31 33 6

6069

) D-28280.

Dip 70°.

1

Remarks

Dip 20° to 45°.

Dip 40°.

) D-28281.Dip 45°.

)

I

A

12115

28

44

00000

00

06

O

923 0925 0

933 0937 0

925 0933 0

937 0941 6

Dip 10° to 30°.

From-

Ft. in.

941 6942 6

958 0959 0

Denth

To-

Ft. in.

942 6958 0

959 0963 0

75


Material

COAL.......................Claystone with slickensidesshaly and clayey streaks.

COAL.......................Claystone with shaly andclayey streaks.

Thickness

Ft. in.

1 015 6

1 04 0

Remarks

Bottom of hole.

From-

Tpn+hDe~t~nn1h

Ft.

0

in.

0

76

Log, Hole WH-8

Location:

Elevation:

1,195 feet N. and 690 feet W. of the S1/4 corner, sec. 19,T. 19 N., R. 3 E., Seward Meridian, Alaska.



21 0

24 0

2638

00

43 0100 0

118 0230 0

24 0

26 0

3843

00

To-

Ft. in.

21 0

100 0118 0

230 0240 0

Material

Overburden, sand, and con-glomeratic boulders.

Weathered Eska conglomer-ate.


Eska conglomerate..........Medium-grained sandstonewith scattered conglomer-atic pebbles.

Eska conglomerate..........Coarse-grained gray sand-stone.

Eska conglomerate..........Medium- to coarse-grainedgray sandstone with whitespecks.

Siltstone.................Claystone.................Folded shaly claystone.....Silty claystone ...........Silty very fine-grainedsandstone.

Siltstone..................Claystone with carbonizedleaf fragments and coalystreaks, 310 to 312feet.

Siltstone grading down intofine-grained sandstone(40° to 80° fractures).

Conglomerate, base of Eskaconglomerate.

Siltstone..................Clay (top of'Chickaloon, nocore).

125

5718

11210

32

3017

109

00

00

00

00660

00

3 0

2 0

Thickness

Ft. in.

21 0

Remarks

240243245245276

00060

243245245276293

00600

293 0303 0

312 0

318 0

419 0420 0

303 0312 0

318 0

419 0

420 0422 0

Dip 20°Dip 40°

Dip 20°.6 0

101

12

0

00

From-

DeDth

Ft.

422

in.

0

77


423 0

424 0

426 0

428 0

433 0

438 0

438 6438 9439 3

440 0

441 0441 6

442 7443 0

443 8444 6445 0

To-

Ft. in.

423 0

424 0

426 0

428 0

433 0

438 0

438 6

438 9439 3440 0

441 0

441 6442 7

443 0443 8

444 6445 0445 11

Material

Folded shaly clayey clay-stone.

Shaly fine-grained sand-stone.

Folded shaly claystone andsiltstone with carbonizedplant fragments and 600fractures.

Sandstone and claystonefolded and contorted withcontact varying from 60° tovertical.

Folded shaly clayey clay-stone and claystone.

Claystone with occasionalblebs of coal and slicken-sides at 60° to 80°.

COAL.......................

Claystone..................Coaly claystone............Bony COAL with folded iron-stone.


Bony COAL..................Coaly claystone with 2-inchstreaks of coal.

Silty ironstone............Bony COAL..................

Coaly claystone............Bone.......................COAL with thin streaks ofbone.

Bone.......................COAL.......................Bone and ironstone.........COAL.......................Ironstone..................COAL.......................Calcareous veinlets andironstone nodules.

COAL.......................

Thickness

Ft. in.- -1 0

1 0

2 0

2 0

5 0

5 0

6

369

1 0

61 1

58

10611

373

1 6173

10

Dip 60° to 80°.

Remarks

DipDip

500.50° to 60°.

445446446447448448449

11290672

446446447448448449449

2906725

Dip 25°.

) D-28282.

)

)

)

)449 5

6Z7316 0 -62 -6

450 3

From-Depth

Ft.

450451452455455455457459459461

463463465465468

in.

369019

10096

78


011084

469 0470 6

478 0

488 0492 0494 0

Ft.

451452455455455457459459461463

463465465468469

To-

in.

69019

100960

110840

470 6478 0

488 0

492 0494 0494 11

Material

Bony COAL.................Claystone.......................COAL.......................Ironstone..................Bone....................................COAL ............ ........Coaly claystone............Bony COAL..................Coaly claystone............Interbedded coaly claystoneand bone.

Bone.............................Coaly claystone...........Bone.....................................Claystone..................Coaly claystone withstreaks of coal.

Ironstone..................Dark claystone with slick-ensides (60° to verticalfractures).

Interbedded medium-grainedgray sandstone and darksiltstone with carbonizedplant fragments.

Siltstone..................Claystone..................Silty claystone with coalystreaks.

COAL.......................Coaly claystone............Silty ironstone............COAL with streaks of bone..Folded shaly claystone withfragments of coal.

Dark claystone with shalycoaly streaks.

Ironstone..................Silty claystone...........Fine sandstone with thindark silty streaks withcarbonized plant frag-ments.

Silty claystone...........

Thickness

Ft. in.

1 31 32 3

18

2 11 2

91 91 6

111 1

82 8

8

17

66

Dip 25°.) D-28283.Dip 25°.

Dip 25

Dip 25°.

Remarks

I

10 0

42

00

11

494495495495497

1146106

495495495497498

46

1060

524

1 86

1 4

I

9

498 0

499 4500 4502 0

512 0

499 4

500 4502 0512 0

520 0

) D-29672.

Dip 25°.

11

10

080

8 0

From-

Deoth

Ft.

520

523523523523

in.

0

79


05911

524 1526 0528 0

583 0

591 0

599 3599 6601 0

608 10

610 0

648 0648 1

670 0679 0

523523523524

59

111

To-

Ft. in.

523 0

526 0528 0583 0

591 0

Material

Coaly claystone withstreaks of clay and clay-stone.

Ironstone..................COAL.......................Coaly claystone............Folded shaly clayey clay-stone with slickensides.

Claystone.......................Siltstone ... ..................Green with white speckelscoarse conglomeratic sand-stone with streaks of med-ium-grained sandstone andoccasional blebs of coal,1-inch coal at base.

Fine-grained sandstone withdark siltstone streakswith carbonized plantfragments and occasionalironstone nodule.

Siltstone with streaks ofclaystone.

Bone.......................Coaly claystone...........Claystone with shaly andthin coaly streaks slick-ensides.

Bony COAL with coaly clay-stone streaks.

Very fine-grained siltysandstone with dark siltystreaks with carbonizedplant fragments and occas-ional ironstone.

COAL.......................Claystone with few siltystreaks and occasionalironstone nodules andblebs of coal.

Siltstone..................Fine-grained sandstone.....

I Thickness

Ft. in.

3 0

5422

1255

1100

8 0

8 3

Remarks

599 3

599 6601 0608 10

610 0

648 0

648 1670 0

679 0681 0

17

36

10

Dip 45°.

Dip 40° to 600.

Dip 20° to 30°.

1 2

38 0

121 11

92

00

From-

Ft. in.

681 0

693 0

696 0706 0708 0

710 0712 0

713 0

718 0718 2

718 10719 0

720 0

726 6726 7

727 0

729 0

732 0

D-nth~.v..

80


To-

Ft. in.

693 0

696 0

706 0708 0710 0

712 0713 0

718 0

718 2718 10

719 0720 0

726 6

726 7727 0

729 0

732 0

754 0

760 2

Material

Silty claystone gradingdown into siltstone withthin streaks of sandstoneand very few carbonizedplant fragments.


Siltstone.................Claystone.......................Coaly claystone with two 1-inch streaks of coal.

Claystone.................Coaly claystone with coalblebs.

Claystone with few blebs ofcoal fractures and slick-ensides.

Calcareous claystone.......Claystone with streaks ofcoaly claystone.

Bone.......................Claystone with streaks ofcoaly claystone.

Claystone with a few blebsof coal slickensides 600to vertical fractures.

Shaly clayey claystone.....Coaly claystone withstreaks of coal.

Coaly shaly folded clay-stone.

Claystone with thin coalblebs, carbonized plantfragments, and 20° to 60°fractures.

Interbedded and crossbeddedvery fine-grained graysandstone and dark silt-stone with carbonizedplant fragments.

Claystone with carbonizedplant fragments and occas-ional ironstone band.

Thickness

Ft. in.

12 0

3 0

1022

21

000

00

5 0

28

21 0

6 6

15

2 0

3 0

22 0

Remarks

1

Dip 45°.

Gouge.

6754 0 2

763764766767767767774775776

784787787787788789789790792

From-

Ft. in.

760 2

760 5

760 10

762 0

Depth

To-

81


Ft.760

760

in.

5

10

762 0

763 8

764766767767767774775776784

787787787788789789790792793

Material

COAL with calcite vein-lets.

Folded ironstone with bonyinclusions.


Claystone with few carbon-ized plant fragments.

Ironstone..................Claystone.......................Ironstone..................Coaly claystone...........Bony COAL..................Claystone.................Bony COAL..................Claystone.................Fine-grained gray sandstonewith thin dark siltystreaks.

Claystone.................Bony COAL..................Coaly claystone............Bony COAL..................Claystone.......................Coaly claystone...........Bony COAL..................Claystone.................Bony COAL with coaly clay-stone streaks.

Claystone with thin coalyand silty streaks.

Ironstone..................Siltstone.......................Folded bony coal includingironstone.

Claystone with few carbon-ized plant fragments.

Interbedded and crossbeddedfine-grained gray sand-stone and dark siltstonewith carbonized plantfragments.

Silty claystone gradingdown into claystone.

Coaly claystone...........

Thickness

Ft. in.3

5

1 2

1 8

42 8

433

7 24

1 08 0

3 0354

1 633

2 99

5 6

Remark

Dip 20° to 30°.

Dip 30°.

793 6

799 0800 0809 7

810 4

814 0

875 0

880 0

799 0

800 0809 7810 4

19

079

814

875

880

880

0

0

0

6

3 8

61 0 Dip 20° to 300.

5 0

6

From-Depth

Ft.

880

881882885885885886

in.

6

82


6604100

To-

Ft. in.

881 6

882885885885886887

604

1000

Material


Coaly claystone............Claystone..................Coaly claystone...........Claystone.................COAL .......................Siltstone.......................

Thickness

Ft. in.i I

1 0

1 02 6

462

1 0

Remarks

Dip 20°.

1

Bottom of hole.

From-

Ft. in.

0 0

DeDth

4 0

24 0

155 0157 0

915105012251257

83

Log, Hole WH-9

Location:

Elevation:

1,005 feet S. and 905 feet W. of the NE. corner, sec. 19,T. 19 N., R. 3 E., Seward Meridian, Alaska.

Collar of hole: 1,240.5 feet, mean sea level datum.


0000

1259 6

1280 9

1298 10

1311 2

1328 4

1345 3

1368 0

1370 4

24 0

155 0

157 0915 0

Ft.

4

in.

0

1050122512571259

0006

To-

1280 9

1298 10

1311 2

1328 4

1345 3

1368 0

1370 4

1384 0

Material

Overburden, clay, and angu-lar gravel.

Medium- to coarse-grainedgray sandstone.

Pebble to cobble Eska con-glomerate.

Carbonaceous shale.........Variable Eska conglomer-ate.

Gray silty claystone.......Variable conglomerate......Sandstone..................Dark fine-grained sand-stone, crossbedded.

Medium- to coarse-grainedsandstone, occasional coalstreaks and shale inclu-sions.

Claystone grading down tofine silty sandstone.

Greenish-to-gray medium-grained sandstone.

Medium-grained gray to darksandstone, stray pebblesand small angular inclu-sions, calcareous.

Interbedded siltstone,fine-grained sandstone andclaystone.

Dark silty claystone, lam-inated and soft.

Soft speckled (biotite)sandstone.

Dark silty claystone withcoaly streaks, laminatedand soft.

Thickness

Ft. in.

4 0

20 0

131

2758

135175322

0

00

0006

21 3

18 1

12 4

Remarks

Churn drilled.

Do.

Do.

Do.Do.

Do.Do.Do.

Cased and con-tinued by coredrilling.

17 2

16 11

22 9

2 4

13 8

From-

Depth

Ft.

13841385

138713881394

in.

05

84


6100

1416 2

1471 0

1482 11

1494 3

1514 8

1535 61536 6

1669 2

1671 2-1672

1672 4

To-

Ft.

13851387

138813941416

1002

in.

56

1471 0

1482 11

1494 3

1514 8

1535 6

1536 61669 2

1671 2-1

1672 4

Material

Coaly claystone............Dark silty claystone, lam-inated and soft.

Ironstone..................Soft laminated claystone...Interbedded claystone,siltstone and fine-grainedsandstone.

Interbedded fine- to med-ium-grained sandstone withsilty and coaly streaks,very pronounced cross-bedding.

Interbedded claystone andsilty sandstone.

Dark silty fine-grainedsandstone.

Medium- to coarse-grained,poorly consolidated sand-stone, many coal streaksand fragments.

Fine-grained sandstone withinterbedded claystone andsiltstone, occasionalcoaly streaks, pronouncedcrossbedding.

Coaly claystone............Interbedded siltstone andfine-grained sandstone,occasional coaly claystoneinclusions and claystonelenses.

Claystone, light-gray car-bonaceous, slickensided.

COAL, calcite veinlets.....Shale, dark-gray, carbona-ceous coal streaks.

Claystone, dark-gray, car-bonaceous plant remains.

Pulverized coal and shale..COAL.......................Bone COAL with sideritestreaks and lenses.

Claystone, dark-gray, car-bonaceous.

Ft.

12

1522

422

Thickness

in.

51

54 10

11 11

11 4

20 5

20 10

Remarks

Average beddingangle 13°.

I

1

9-foot core loss.


1132

2

08

V

14

1672 4

167516771677

1678

605

1675 6

1677 01677 51678 1-2

1678 6--

l0-½3 1

3 2

1 658-1

5

2-'-inch coreloss.) D-71977.

3-½-inch coreloss.

4-inch core loss.

From-

Depth

Ft.

16781678

167916801680

85


in.

6-1210-1

246

1684 6

1685 10.

16861686

12

7

1687 6

1688 9

1689 01689 7

1693 1

1694 6

1695 2

1695 10

1698 8-31698 11

1700 01700 6

1735 8

1741 3

1743 8

1685 10-2

1686 ½

1686 71687 6

1688 9

1689 0

1689 71693 1

1694 6

1695 2

1695 10

1698 8-3

1698 111700 0

1700 61735 8

1741 3

1743 8

1745 2

Ft.

16781679

168016801684

in.

10-½2

466

To- Material

COAL.......................Siltstone, dark, carbona-ceous coal lens.

COAL, broken..............Bone and shale, broken.....Siltstone, dark-gray.......

COAL, '-inch - clay lensrejected.

Shale, dark-gray, carbona-ceous.

COAL.......................Shale, dark-gray, carbona-ceous, coal streaks.

COAL, bone parting ½-inch -one rejected.


Bone with coal streaks.....COAL and broken COAL, 2 in-ches of shale and bone re-jected.

COAL and shale, pulver-ized.

COAL with calcite veinletsand ironstone lenses.

Claystone, dark-gray, car-bonaceous.

Claystone, dark-gray, coalfragments, pulverized.

COAL.......................Bone and claystone, dark-gray.

Claystone, coal streaks....Interbedded claystone,siltstone, and fine-grained sandstone.

Coaly claystone with boneand sandstone bands.

Bony COAL..................

Dark claystone, coalstreaks.

Thickness

Ft. in.

43-

1 22

4 0

1 4-2

2

6-111

1 3

3

73 6

1 5

8

8

) D-71978.

3-feet, 1-inchcore loss.) D-71979.

)

) D-71980. 3-inch core loss.

) D-71981. 6-½-inch core loss.

7-inch core loss.

Not sampled foranalyses.

1-foot, l-1 -inchcore loss.

Bedding angle16° to 30°.

2-foot core loss

Not sampled foranalyses. 8-inch core loss.

Remarks

2 104-

241 1

635 2

5 7

2 5

1 6

From-

Depth

Ft.

1745

in.

2

86


1791 10

1794 0

1826 10

1828 41830 4

1836 41843 0

1848 8

1955 51859 0

1863 2

1877 8

1893 0

1895 31896 1

2032 0

2034 4

To-

Ft.

1791

in.

10

1794 0

1826 10

1828 4

1830 41836 4

1843 01848 8

1855 5

1859 01863 2

1877 8

1893 0

Material

Interbedded claystone,siltstone, and fine-grained sandstone.

Bony COAL and coaly clay-stone.

Interbedded claystone,siltstone, and sandstonewith frequent coal streaksand inclusions.

Soft calcareous shale,light color.

Claystone, coal streaks....COAL, bony COAL and coalyclaystone.

Claystone, coal streaks....Bony COAL and coaly clay-stone.

Claystone, coal streaks....

COAL and coaly claystone...Claystone, coaly streaks...

Interbedded claystone andsiltstone, occasional coalstreaks and ironstone con-cretions.

Fine-grained sandstonegrading down to siltstoneand claystone with occas-ional coal streaks.

Bony COAL (Poorly definedroof).

Very soft claystone ........Interbedded fine-grainedsandstone and siltstone,occasional claystone andbony bands.

Conglomeratic sandstonewith coaly fragments.

Interbedded fine-grainedsandstone, siltstone, andclaystone, occasional thincoal lenses.

Thickness

Ft. in.

46 8

2 2

32 10

1 6

2 06 0

6 85 8

6 9

34

72

1

4-foot core loss.

2-foot, 9-inchcore loss.




Remarks

I

1895 3

14 6

15 4

2 3

10135 11

2 4

69 8

I

1

1896 12032 0

2034 4

2104 0

Bottom of hole.

1

From-

Depth

Ft.

011

in.

00

87

Log, Hole WH-10

Location:

Elevation:

555 feet N. and 3,380 feet E. of the El/4 corner, sec. 19,T. 19 N., R. 3 E., Seward Meridian, Alaska.



50 0

125 0150 0

215264290295

0000

345 0

385 0

400 0

730 0755 0

770 0

790 0

938 0

955 0

1020 0

1025 0

1133 0

125 0

150 0215 0

Ft.

1150

in.

00

264290295345

0000

To-

385 0

400 0

730 0

755 0770 0

790 0

938 0

955 0

1020 0

1025 0

1133 0

Material

Overburden, sandy clay.....Coarse-pebble Eska conglom-erate.

Soft Eska conglomerate orconglomerate sandstone.

Sandstone, silty ?........Sandstone, gray, medium-grained.

Claystone.................Claystone, carbonaceous....Sandstone, clayey ?.......Soft Eska conglomerate orconglomeratic sandstone.

Eska conglomerate, mediumto coarse pebble.

Soft Eska conglomerate orconglomeratic sandstone.

Eska conglomerate, mediumto coarse pebble.

Sandstone, gray, coarse....Soft Eska conglomerate orconglomeratic sandstone.

Sandstone, gray, medium-grained.

Sandstone, gray, coarse- tomedium-grained.

Eska conglomerate, mediumpebble and cobble.

Soft Eska conglomerate orconglomeratic sandstone.

Eska conglomerate, coarsepebble and cobble.

Sandstone, gray, coarse- tomedium-grained (few peb-bles).

Claystone, silty ?.........

Ft.

1139

Thickness

in.

00

75 0

2565

49265

50

40

15

330

2515

00

0000

0

0

0

00

TO

To

TO

TO

TO

TO

TO

Remarks

Churn drilled.Do.

Do.

Do.Do.

Do.Do.Do.Do.

Do.

Do.

Do.

Do.Do.

Do.

Do.

Do.

Do.

Do.

Do.

Do.

20 0

148 0

17 0

65 0

5 0

108 0

18 01151 0

From-

Deonth

Ft.

1151

115111551157

in.

0

88


570

1158 2

1171 51173 5

1174 7

1182 10

1183 8

1185 4

1191 0

1193 6

1194 4

1194 10

1195 7

1219 10

1220 2

Ft.

1151

115511571158

in.

5

702

To-

1171 5

1173 51174 7

1182 10

1183 8

1185 4

1191 0

1193 6

1194 4

1194 10

1195 7

1219 10

1220 2

Material

Claystone, brownish withgray streak.

Siltstone, gray............Claystone, gray, dense.....Siltstone to claystone,gray.

Claystone, dark-gray.......

Siltstone, gray............Sandstone, dense, medium-to fine-grained, gray.

Sandstone, fine-grained,silty, gray.

Sandstone, fine-grained,gray, interlaminated withclaystone.

Sandstone, fine-grained,gray with thin coalystreaks.

Sandstone, medium tocoarse-grained, gray witha few coaly fragments.

Eska conglomerate, coarsepebbles in coarse-grainedsandstone matrix.

Sandstone, medium- tocoarse-grained, greenishwith coaly streaks.

Eska conglomerate, chertypebbles in greenish sand-stone matrix, coaly frag-ments.

Conglomeratic sandstone,greenish-gray coaly frag-ments.

Eska conglomerate, pebblesin a coarse-grained sand-stone matrix.

Sandstone, dense, medium-grained, gray.

Eska conglomerate, pebblesin a coarse-grained sand-stone matrix.

Thickness

Ft.

411

252

in.

5

13 3

-

21

02

8 3

10

1 8

5 8

2 6

10

6

9

24 3

4

52 0

Remarks


Bedding angle15°.

Do.

U



1272 2

From-

Depth

Ft.

1272

in.

2

89


1281 0

1302 0

1309 8

1310 1

1313 5

1332 0

1338 101340 1

1344 3

1345 11

1348 0

1351 3

1361 2

1366 0

Ft.

1281

in.

0

To-

1302 0

1309 8

1310 1

1313 5

1332 0

1338 10

1340 11344 3

1345 11

1348 0

1351 3

1361 2

1366 0

1394 2

.-

Material

Sandstone, dense, medium-grained, gray.

Eska conglomerate, volcan-ic, and cherty pebbles ingray medium-grained sand-stone matrix, occasionalcoaly streaks.

Eska conglomerate, pebblesin coarse-grained poroussandstone matrix.

Sandstone, medium-graineddense, gray.

Eska conglomerate with in-terbedded and crossbeddedcoarse- to medium-grainedsandstone.

Sandstone, very coarse-grained, granitic, chlori-tic stain, occasional in-terbedded medium-grainedsandstone.

Sandstone, medium-grained,crossbedded.

Siltstone, dark, dense.....Conglomeratic sandstone,occasional siltstone frag-ments.

Sandstone, fine-grained,crossbedded.

Sandstone, coarse-grained,chloritic.

Sandstone, dense, fine- tomedium-grained, grada-tional.

Sandstone, interbedded,medium- to coarse-grained,chloritic.

Conglomeratic sandstonewith a few silty streaks.Sandstone, interbedded andcrossbedded, medium- tovery coarse-grained withoccasional silt and clay

Thickness

Ft. in.

8 10

21 0

7 8

5

3 4

18 7

6 10

Remarks


6-inch core loss.

10-foot coreloss.

I

14

32

1 8

2 1

3 3

9 11

4 10

28 2

I bands.

From-DeDth

Ft.

1394

in.

2

90


1430 10

1442 8

1453 2

1458 10

1461 8

1465 6

1466 61474 8

1475 10

1483 7

1511 9

1574 5

1575 91576 4

1577 81578 0

1578 101579 6

Ft.

1430

in.

10

To-

1442 8

1453 2

1458 10

1461 8

1465 6

1466 6

1474 81475 10

1483 7

1511 9

1574 5

1575 9

1576 41577 8

1578 01578 10

1579 61590 7

..

.Material

Sandstone, interbedded andcrossbedded, medium- tocoarse-grained with occas-ional dark siltstone frag-ments and clay and siltbands.

Sandstone, medium-grainedwith interbedded dark-grayconglomeratic sandstone.

Eska conglomerate, finepebble grading to conglom-eratic sandstone.

Eska conglomerate, mediumpebble.

Sandstone, medium-grainedto conglomeratic.

Claystone, dark............

Sandstone, medium-grainedcrossbedded, light-gray.

Claystone, dark............Sandstone, medium-grained,crossbedded.

Interbedded and crossbeddedsandstone and claystone.

Sandstone, fine- to medium-grained, crossbedded.

Sandstone, medium- tocoarse-grained, conglomer-atic with occasional darkclaystone bands and frag-ments.Sandstone, medium-grainedwith carbonaceous streaks.Dark claystone............Sandstone, medium-grainedto conglomeratic.

Dark claystone............Sandstone, conglomeratic,fine matrix.

Dark claystone............Sandstone, medium-grainedwith dark claystone bandsand streaks.

Thickness

Ft. in.

36 8

11 10

10 6

5 8

2 10

3 10

1 0

Remarks

I

81

22


4-inch core loss.

7-inch core loss.

7 9

28 2

62 8

1 4

71 4

410

811 1

3

Bedding angle10°.

I

From-.....

Depth

Ft.

15901591

in.

72

91

1593 8

1601 41602 6

1604 4

1640 7

1651 10

1652 7-5

1653 3-½

1655 1

1655 41655 8

1655 10

1656 8

Ft.

15911593

To-

in.

28

1601 4

1602 61604 4

1640 7

1651 10

1652 7-

1653 3-


Material

Dark siltstone............Sandstone, medium-grained,interbedded with darksiltstone.

Siltstone with interbeddedsandstone bands.

Sandstone, fine-grained....Dark siltstone with inter-bedded fine-grained sand-stone.

Sandstone, fine- to medium-grained with poorly de-fined siltstone interbed-ding.

Dark siltstone, laminated,with few coaly streaks.

COAL, bright, calcite, andkaolinite facing minerals.

Shale, dark-gray carbona-ceous coal streaks.

COAL, bright, calcitefacing minerals.


COAL.......................Shale, dark-gray, coalystreaks.

COAL, bright, calcite andkaolinite facing minerals.


Clay, gray, soft..........Bony COAL..................


Bone and shale............COAL, bright, broken.......

COAL, bright, kaolinitefacing minerals.


Thickness

Ft. in.

72 6

7 8

11

210

36 3

11 3

9-i

8

) D-74888.

Remarks

1655 1 1 9-½

1655 4

1655 81655 10

1656 8

1656 9-t

1657 01657 11-1

1660 5

1660 71663 5-2

3

42

10

1-½

2-11-4

2 5-4

22 10-j

)

)

)

16561657

9-0 Not sampled for

analyses.1657 11-2

1660 51660 7

1663 5-2

1664 0

) D-74889. 1-foot, 4-2-inchcore loss.

1664

1664

0

1

6-'2)1

From-

Depth

Ft.

1664

166416651665

in.

1

95-18-

92

1666 5

1667 9

1680 0

1681 11

1683 01684 4

1694 6

1704 10

1711 10

1780 5

1786 1

1792 6

1796 6

Ft.

1664

166516651666

5-i8-55

To-

in.

9

1667 9

1680 0

1681 11

1683 0

1684 41694 6

1704 10

1711 10

1780 5

1786 1

1792 6

1796 6

1801 4


Material

COAL, bright, kaolinitefacing minerals.

Shale, dark-gray...........Bone...........................COAL, broken................

Bone and shale, dark-gray,carbonaceous.

Sandstone and siltstone,interbedded and crossbed-ded.

Sandstone, coaly with erra-tic fluvial bedding.

Black claystone with coalfragments.

Dark claystone.............Siltstone with crossbeddedfine-grained sandstone.

Interlaminated bony COALand coaly claystone.

Dark siltstone with coalstreaks and fragments.

Sandstone and siltstone,interbedded and crossbed-ded with coal streaks andfragments.

Claystone, partly foli-ated.

Siltstone and sandstone,crossbedded.

Dark claystone with coalystreaks.

Siltstone and sandstonewith bone streaks and in-clusions.Intermixed COAL and bone...Bright COAL...............Bone and COAL..............Black carbonaceous clay-stone.

Bone......................Bone and clay.............Bright COAL with thin

Thickness

Ft. in.

8

8-½38-i

1 4

12 3

1 11

1 1

110

42

10 4

7 0

68 7

5 8

6 5

4 0

4 10

4 211

1 01 7

Remarks

)


5-inch core loss.

1801180518061807

180918091809

4655

0410

1805180618071809

180918091812

6550

4106

)))

E-188.E-189.E-190.

4682 ) E-191.

streaks of bone.

---- - -----

From-Depth

Ft.

1812

in.

6

93


1815 0

1823 9

18511852185318541854

610

824

1855 81857 0

188718891899

189118931894

004

667

18521853185418541855

Ft.

1815

108248

To-

1857 01887 0

1823 9

1851 6

in.

0

188918991891

189318941899

046

679

Material

Claystone with streaks ofbone.

Interbedded sandstone andsiltstone with carbona-ceous streaks.

Medium-grained gray sand-stone with plant fragmentsand coaly streaks.

Coaly claystone............Silty coaly sandstone......Bony COAL..................Coaly siltstone...........Bony COAL and COAL.........

Coaly claystone..............Interbedded siltstone andclaystone with occasionalcoal fragments.

Bony COAL and COAL .........Coaly claystone............Bony COAL with occasionalsilty streaks.

Silty claystone............Gray silty sandstone.......Siltstone, crossbedded withoccasional plant frag-ments.

Dark carbonaceous claystonewith silty streaks.Interbedded and crossbeddedgray siltstone and sand-stone, occasional coalystreaks.

Interlaminated claystoneand siltstone, bentoniticappearance.

Dark claystone with coalstreaks and fragments.

Bony COAL..................

Coaly claystone, lamina-ted.

COAL.......................

Thickness

Ft. in.

2 6

8 9

27 9

1 41062

1 4

130

40

2 04

2 2

215

Remarks

012

1899 9

1901 2

1913 5

1919 0

1919 5

1921 1

1923 7

1901 2

1913 5

1919 0

1919 5

1921 1

1923 7

1 5

12 3

5 7

5

1 8

2 6

5


Do.

Do.


Do.1924 0

627316 0 -62 -7

From-

Dnnth

Ft.

192419241925

94


in.

020

1927 0

1932 10

1934 0

1936 3

1937 0

1942 0

1942 8

1946 6

1970 0

Ft.

192419251927

in.

200

To-

1932 10

1934 0

1936 3

1937 0

1942 0

1942 8

1946 6

1970 0

Material

Coaly claystone...........COAL.......................Dark claystone with coalybands and fragments,slickensides.

Coaly claystone with bonycoal bands.

Silty sandstone with occas-ional coaly fragments.

Dark claystone with coalfragments, slickensides.

Gougy clay with coal frag-ments.

Carbonaceous claystone,coaly streaks, slicken-sides.

Siltstone with coal streaksand fragments.

Coaly claystone, bonystreaks.

Interbedded silty claystoneto very fine-grained sand-stone, crossbedded.

Coaly claystone, siltystreaks.

Dark silty claystone.......Coaly claystone...........Interbedded and crossbeddedsiltstone and sandstone.

Claystone.......................Silty claystone with dis-torted soft clay streaks,slickensides.

Coaly claystone...........Interbedded sandstone andsiltstone.

Coaly claystone............Soft claystone with slick-ensides.

Coaly claystone............Dark silty claystone, coalstreaks and slickensides.

Bony COAL..................

Thickness

Ft. in.

210

2 0

5 10

1 2

2 3

9

5 0

8

3 10

23 6

1 10

108

5 8

102 7

Remarks

a

I

7-inch core loss.

10-inch coreloss.

4-inch core loss.

197119721973

1084

1971

197219731979

10

840 A

1979 01979 10

1982 51985 2

1990 51991 10

1992 61993 2

1997 2

1979 101982 5

1985 21990 5

1991 101992 6

1993 21997 2

1997 11

1-foot core loss.V

25

93

1 58

84 0

9

6-inch core loss.


*

From-

Depth

Ft.

1997

in.

11

95


1998 5

2010 1

2014 6

2089 9

2094 8

2097 9

Ft.

1998

in.

5

To-

2010 1

2014 6

2089 9

2094 8

Material

Soft clay, bentoniteappearance.


Silty claystone, slicken-sides.

Siltstone grading uniformlyinto medium-grained con-glomeratic sandstone withno demarcation, few coalystreaks and fragments inlower 20 feet.

Claystone with a few siltystreaks.


Siltstone to silty clay-stone.

Thickness

Ft. in.

6

11 8

4 5

75 3

Remarks

Bedding angle15°.


2097

2110

9

0

4 11

3 1

12 3

Bottom of hole.

From-Deoth

Ft.

02

260

96

Log, Hole WH-11

Location:

Elevation:

735 feet N. and 1,500 feet W. of the El/4 corner, sec. 19,T. 19 N., R. 3 E., Seward Meridian, Alaska.



in.

060

270 0395 0

425 0445 0

455 0725 0

7308351065

000

Ft.

2260270

395 0425 0

445 0455 0

725 0730 0

To-

83510651230

in.

600

000

Material

Sandy clay overburden.....Eska conglomerate..........Sandstone, brown, medium-grained, soft.

Eska conglomerate..........Coarse-grained sandstone,greenish-brown.

Eska conglomerate..........Medium-grained sandstone...

Eska conglomerate..........Sandstone, greenish-brown,medium soft.

Eska conglomerate..........Variable sandstone.........Clayey sandstone with shaleor claystone lenses.

Coarse-grained gray-whitesandstone.

Sandstone, medium- to fine-grained, claystone lenses.

Medium-grained sandstone,ironstone concretions andcoaly streaks.

Coarse-grained speckledsandstone.

Interbedded fine-grainedsandstone and siltstone,occasional coaly streaksand concretions.

Medium-grained sandstone,ironstone inclusions.

Siltstone..................Interbedded fine-grainedsandstone and siltstone.

Ft.

225710

12530

2010

2705

105230165

Thickness

00

00

00

000

in.

660

Remarks

Churn drilled.Do.Do.

Do.Do.

Do.Churn drilled.Water course at450 feet.

Churn drilled.Do.

Do.Do.Do.

Do.

Do.


1

1230 0

1250 0

1291 0

1293 8

1294 9

1341 2

1351 11351 10

1250 0

1291 0

1293 8

1294 9

1341 2

1351 1

1351 101354 4

20 0

41 0

2 8

1 1

46 5

9 11

92 6

I

----

From-

Depth

Ft.

1354

in.

4

97


1371 0

1372 8

139813991399140014001400140114031404

14051406140714071408

141014111411141214121412141214131414

101010-1-3--8-15-2

7-j3-1

80398

34

11178

1126

To-

1372 8

1398 10

Ft.

1371

in.

0

139913991400140014001401140314041405

14061407140714081410

141114111412141214121412141314141415

1010-½3-

1-i3-8-

5-½317-93-½8

03983

411

178

11260

Material

Medium- to coarse-grainedconglomeratic sandstone,few coaly streaks.

COAL with j-inch siltystreak.

Interbedded claystone,siltstone, and silty sand-stone.

COAL.......................Clay parting...............COAL.......................Bone and clay.............COAL ............. ..........Intermixed bone and clay...COAL...............................Bone and clay..............COAL.................................

Bone.......................COAL.......................Bone and clay..............COAL .......................Claystone, coal, and sandystreaks.

COAL.......................Claystone (slack)..........Bone..............................COAL......................................Bone.......................COAL.......................Bone.......................COAL.......................Clay, siltstone, and sand-stone.

Interbedded claystone,siltstone, and silty sand-stone.

COAL, bony.................

Claystone.......................Bone.......................Interbedded claystone andsiltstone, few coalybands.

1 8

26 2

1 01

3259

2 28

1 4-8

41 3

611

1 7

1 1726133

1 46

51 5

8

106

8 9

Thickness

Ft. in.

16 8


) E-185.

)

)

)

) 9-i-inch coreloss.

)

)

) E-186.

)

)

)


Remarks

1415 0

1466 5

1466 5

1467 1

146714671468

111

5

146714681477

1152

From-Depth

Ft.

1477

in.

2

98

1486 6

1493 1

1578 01580 9

1608 6

1621162316241624162516251626162616291629

1630163416341634

7117991045-6-448

96810

To-

1493 1

1578 0

1580 91608 6

1621 7

Ft.

1486

in.

6

1623162416241625162516261626162916291630

1634163416341664

11799

104

6-4489

68

107


Material


Claystone, silty bands andcoaly streaks.

Fine-grained gray massivesandstone, occasionalcoaly streaks.

Claystone.......................Interbedded siltstone,claystone, and silty sand-stone.

Claystone, coaly bands andstreaks.

Claystone, coaly streaks...COAL.......................................Clay.......................COAL...............................Siltstone..................COAL.......................Siltstone.................COAL.......................Siltstone..................Bone and clay, thinbanded.OAL ... ......................Bone.......................COAL.......................Interbedded claystone,siltstone, and silty sand-stone, coal streaks ontop.Claystone with a few coalbands and silty streaks.[nterbedded claystone andsiltstone, few coalstreaks.COAL ................. ....Claystone.......................Coaly claystone...........COAL................................

227

13 1

2 482

12i 3

71

2 9-44

1 1

3 922

29 9

6 5

41 6

23

1 611

Thickness

Ft. in.

9 4

6 7

84 11

99

Remarks


Average indica-ted dip from1,291 to1,493 feet, 250.


I

I


) E-187.

)

)

)

)

)a

*

1664 7

1671 0

1671 0

1712 6

1712171217121714

68115

1712171217141715

811

54 Not sampled for

analyses.

From-

Denth

Ft.

1715

in.

4

99


1716 10

1765 10

1768 0

1769 0

1771 4

1775 2

1776 41776 11

1780 5

1785 01788 0

1790 6

1796 4

1801 4

1814 0

1765 10

1768 0

1769 0

1771 4

1775 2

1776 4

1776 111780 5

Ft.

1716

in.

10

To-

1785 0

1788 01790 6

1796 4

Material

Claystone, coaly top 3inches.

Siltstone and silty sand-stone, few coaly claystonebands.

COAL.......................

Dark claystone, coalystreaks and fragments.

COAL.......................


COAL......................

Bony COAL..................Coaly claystone and clay-stone with coal streaks.

COAL.......................

Claystone, coaly streaks...COAL.......................

Dark claystone, coalstreaks and fragments.

Interbedded claystone, sil-ty claystone and siltysandstone.

Interbedded claystone,siltstone, and fine-grained sandstone, fewcoaly streaks.

COAL, bony.................

Claystone, coaly streaks...Bony COAL ..................Claystone.......................Bony COAL.. ..................Silty claystone..........Interbedded claystone,siltstone, silty sand-stone, few coaly frag-ments.

Ft.

1

49

1

Thickness

2

0

73 6

4 7

in.

6

2 2

1 0

2 4

3 10

Remarks

32

06






Do.

3-foot, 5-inchcore loss. Notsampled for an-alyses.


5-foot, 10-inchcore loss. Bed-ding poorly de-fined.


Do.

Do.

1801

1814

4

0

5 10

5 0

12 8

1 81815 8

181518151816181718171819

81110065

181518161817181718191838

11100655

31126

110

119

I

From-

DTnth

Ft.

1838184018411842184318461853

in.

5521

1045

100

1861 0

1862 41863 2

1898 0

1921 4

1937 2

1938 0

1959 61977 8

1997 02003 0

2037 0

Ft.

1840184118421843184618531861

in.

521

10450

To-

1862 4

1863 21898 0

1921 4

1937 2

1938 0

1959 6

1977 81997 0

2003 02037 0

2100 0


Material

Coaly claystone............Siltstone.... ..................Silty sandstone ...........Silty claystone............Coaly claystone............Siltstone, sandy streaks...Claystone, coaly streaks...

Bony COAL................

Coaly claystone............Interbedded claystone,siltstone and fine-grainedsandstone.

Massive gray medium-grainedsandstone, coal fragmentslower 5 feet.


Dark laminated claystone(shale).

Massive gray medium-grainedsandstone, occasionalcoaly fragments.

Fine silty sandstone.......Dark claystone, frequentcoaly bands and streaks.

Claystone.......................Interbedded claystone,siltstone, and fine-grained sandstone, coalyfragments and coaly clay-stone streaks.

Greenish silty claystone,ironstone concretions.

Thickness

Ft. in.

2 0911

1 92 67 17 7

1 4

1034 10

23 4

15 10

10

Remarks

1-foot core loss.



9-foot core loss.

3-foot core loss.

1

21

1819

634

6

24

00

63 0

Bottom of hole.

I

From-

Denth

Ft.

115

in.

00

101

Log, Hole WH-12

Location:

Elevation:

875 feet S. and 2,630 feet W. of the NE. corner, sec. 19,T. 19 N., R. 3 E., Seward Meridian, Alaska.



70 0120 0150 0

220 0

3703906236356708058488658809259559709751005103512601293

00000000000000000

Ft.

1570

120 0150 0220 0

370 0

in.

00

390623635670805848865880925955970975

10051035126012931303

To-

00000000000000000

Material

Overburden - sandy clay....Interbedded sandstone andEska conglomerate.

Eska conglomerate.........Clayey sandstone...........Interbedded sandstone andEska conglomerate.Interbedded claystone andclayey sandstone.

Brown shale................Eska conglomerate.........Sandstone..................Claystone ..................Eska conglomerate..........Sandstone....................Eska conglomerate.........Claystone.................Eska conglomerate..........Sandstone..................Eska conglomerate..........Sandstone..................Eska conglomerate..........Sandstone..................Eska conglomerate..........Sandy or silty claystone...No core...................

Interbedded and crossbeddedclaystone and siltstone,some iron stain.

Interbedded fine-grainedsandstone, siltstone, andclaystone, occasional cal-cite-filled fractures.

Eska conglomerate..........

503070

150 0

Ft.

1555

in.

00

Thickness

000to

TO

202331235

1354317154530155

30302253310

00000000000000000

Remarks

Churn drilled.Do.

Do.Do.Do.

Do.

Do.Do.Do.Do.Do.Do.Do.Do.Do.Do.Do.Do.Do.Do.Do.Do.



1303 0

1311 10

1311 10

1353 8

8 10

41 10

1353 8 1423 0 69 4

From-

Depth

Ft.

1423

in.

0

1429 1

1464 5

1475 01495 0

1516 8

1520 4

1523 0

1524 4

1535 0

1538 0

1585 101587 0

1588 5

1592 2

1625 7

1692 0

102


Ft.

1429

in.

1

To-

1464 5

1475 0

1495 01516 8

1520 4

1523 0

1524 4

1535 0

1538 0

1585 10

1587 01588 5

1592 2

1625 7

1692 0

1710 0

Material

Hard medium-grained sand-stone, many coaly streaksand fragments.

Eska conglomerate, some in-terbedded medium-grainedsandstone.

Massive medium-grainedsandstone.

Eska conglomerate.........Medium- to coarse-grainedvery granular sandstone,conglomeratic.

Medium-grained sandstone,no true bedding discern-able.

Medium- to coarse-grainedsandstone, claystoneblebs.

Dark claystone, sandystreaks.

Medium-grained sandstone,angular conglomeraticstreaks.

Dark silty claystone, sandystreaks and inclusions.

Medium-grained to conglom-eratic sandstone, occas-ional silty streaks andclaystone inclusions.

Dark claystone............Medium-grained sandstone,few claystone blebs.

Dark claystone, sandystreaks on bottom.

Massive medium-grainedsandstone, feldspathic.

Interbedded Eska conglomer-ate and medium-grainedsandstone.

Interbedded and crossbeddedfine-grained sandstone andsiltstone, occasionalshaly streaks.

Thickness

Ft. in.

6 1

35 4

10 7

2021

08

3 8

2 8

1 4

10 8

3 0

47 10

Remarks

11

25

3 9

33 5

66 5

18 0


Average indicatedbedding angle25°.

From-

Depth

Ft.

1710

in.

0

103


1734 3

1756 8

1851 7

1852185218531853185318541855185518551856185718571859185918601861186218651866186718681869

189919001900

5102711

0041126102997101170

2710

To-

1756 8

1851 7

1852 5

Ft.

1734

in.

3

1852185318531853185418551855185518561857185718591859186018611862186518661867186818691899

190019001909

1027

11004

1126

1029971011702

7109

Material

Dark medium-grained sand-stone, calcite streaks andfracture filling.

Medium-grained sandstone,soft to dense, granitic.

Dark claystone, occasionalcoaly streaks.

COAL.......................

Coaly claystone............COAL.......................Claystone.................COAL.......................Silty claystone............COAL.......................Claystone.......................Bony COAL..................Silty claystone............Coaly shale................Silty claystone............Bony COAL..................Claystone, coaly streaks...Bony COAL..................Coaly claystone............Bony COAL..................COAL.....................Claystone, coaly streaks...Carbonaceous shale.........COAL.......................Shale......................Dark claystone, occasionalsandy and coaly streaks.

Carbonaceous shale.........Bony COAL..................Interbedded claystone andcoaly claystone.

Bony COAL..................

Dark claystone, occasionalcoal fragments, sandystreaks.

Dense medium-grained sand-stone, multiple thin coalystreaks.

Thickness

Ft. in.

24 3

22 5

94 11

10

54541

1 0473

1 44

1 47

1 0106

2 111 11 01 6

530 2

1 53

8 11

1 2

9 2

33 8

Remarks


Do.

Do.

Do.

Do.

Do.

Do.

Do.Do.

Do.

Bedding angleindeterminate.


1909 9

1910 11

1920 1

1910 11

1920 1

1953 9

From-

Depth

Ft.

1953

in.

9

104

1955 2

1963 8

1966 2

1967 1

199019911991

1996199619961996199719971998199819981999

20002001200320032003200520062007200720082008

05

7-½

01787845-½93

061-½2

10990915

Ft.

1955

1963 8

1966 2

1967 1

1990 0

in.

2

To-

199119911996

1996199619961997199719981998199819992000

20012003200320032005200620072007200820082034

57-i0

1787845-1930

6

1-½2

109909156


Material

Crossbedded fine-grainedsilty sandstone.

Dark claystone, occasionalcoaly and sandy streaks.

Crossbedded fine-grainedsandstone, silty streaks.

Dark claystone............

Interbedded claystone,siltstone, silty clay-stone, occasional coalystreaks.

Variable coaly claystone...Bone.......................COAL.......................

Bone.......................COAL.......................Bone ....................COAL.......................Bone.......................COAL.......................Bone.......................COAL.......................Bone.......................Dark-gray siltstone withthin streaks of coal.

Bone......... ............COAL.......................Bone .......................COAL.......................Bone.......................COAL.......................Bone.......................COAL.......................Bone ......................Dark-gray siltstone........Interbedded claystone andfine-grained sandstone,occasional ironstone con-cretions and coalystreaks.

Black carbonaceous clay....

Thickness

Ft. in.

1 5

8 6

2 6

11

22 11

1 52-1

4 4-2

1611118

1-T3-269

Remarks

Bedding angle00 to 100.

Do.

Bedding angle50.

) D-99652. 2-foot, 6-inchcore loss.

) D-99653.

)

)

)

11

67-1

F~T

81 111 0

3944

26 1

) D-99654.

) D-99655.) D-99655.

)

2034 112034 6 5

From-

Depth

Ft.

20342036203720372038203820382039203920402040

in.

111180234637

105


2073 12078 9

2080 32081 11

Ft.

20362037203720382038203820392039204020402073

in.

11802346371

To-

2078 92080 3

2081 112083 8

Material

COAL.......................Clay, siltstone and bone...COAL.......................Clay with streaks of bone..COAL.......................Bone.......................COAL.......................Bone .......................COAL.......................Dark-gray siltstone........Interbedded and crossbeddedclaystone and fine-grainedsandstone, occasional con-cretions and coalystreaks.

Light micaceous shale......Dark claystone, coalystreaks.

Bright COAL................Dark-gray claystone withstreaks of coal and bone.

Bright COAL................Clay and bone..............COAL.......................Bone and clay..............COAL.......................Clay with streaks of coal..Interbedded claystone andcoaly claystone.

COAL.......................

Dark claystone............COAL.......................Dark claystone, coalystreaks, occasional con-cretions.

COAL.......................Interbedded claystone,silty claystone, occas-ional concretions.

Ft

3

51

11

Thickness

;. in.

1 21 0

7421

1 1294

2 6

86

89

Remarks

) D-99656.

)

)

)

)

Average indicatedbedding angle200.

) D-99657.

)

)

)


2083208420842085208620902090

825-½3317

2084208420852086209020902094

25-133171

2094 1 2095 1

63-19-

1 03 10

63 6

1 0

7 82

4 6

76 0

209521022102

19

11

210221022107

9115

2107 52108 0

2108 02114 0

Bottom of hole.

De

From-

Ft. in.

0 0

1305 0

1315 6

1323 9

1324 5

1335 7

1337 9

1340 6

1537 0

106

Location:

Elevation:

Log, Hole WH-13

1,190 feet N. and 1,125 feet W. of the SE. corner, sec. 18,T. 19 N., R. 3 E., Seward Meridian, Alaska.

Collar of hole: 1,646 feet, mean sea level datum.


Ft.

1305

in.

0

DthTo-

1315 6

1323 9

1324 5

1335 7

1337 9

1340 6

Material

Eska conglomerate, includ-ed sandstone and shalelenses.

Soft brown shale...........

Siltstone and silty clay-stone.


Siltstone and very fine-grained sandstone.

Fine-grained sandstone,silty streaks.

Soft sandstone, siltystreaks.

Eska conglomerate, occas-ional sandstone lenses.

Medium- to coarse-grainedcrossbedded sandstone, oc-casional pebbles.

Dense medium-grained sand-stone, occasional pebbles.

Claystone.......................Fine- to medium-grainedsandstone, interbeddedwith numerous claystonestreaks and blebs.

Medium- to coarse-grainedsandstone with occasionalclaystone and fine-grainedsandstone streaks andbands, coal fragments at1,660 feet.

Ft.

1305

10

Thickness

8 3

8

11 2

2 2

2 9

6

in.

0

Remarks

Churn drilled.Water in vari-able volume, oc-casionally ap-proaching ar-tesian.


I

1549 6

1537 0

1549 6

1555 11

1562 111588 3

1707 0

12 6

6 5 1

196 6

1555 111562 11

1588 3

725

04

118 9 Hole lost andabandoned. Aver-age indicatedbedding anglenear bottom ofhole 15°, oc-casionallysteepening to30° at contacts.Bottom of hole.

From-Deoth

- -

Ft.

0

107

Log, Hole WH-14

Location:

Elevation:

Bearing:

1,605 feet S. and 2,130 feet E. of the NW. corner, sec. 20,T. 19 N., R. 3 E., Seward Meridian, Alaska.


N. 40° W.

Dip of hole: Horizontal.

in.

0

192 9

199 6

206 10

265 8

271 2273 1

274 11

276 8

307 8

Ft.

192

in.

9

To-ITO-

199 6

206 10

265 8

271 2

273 1274 11

276 8

307 8

348 2

Evan Jones Coal Co.entry.

Material

drift

Medium-coarse to conglomer-atic sandstone, occasionalcoaly fragments and silt-stone inclusions.

Medium-grained sandstone,occasional silty slips andcherty joints.

Interbedded silty claystoneand fine- to medium-grained sandstone.

Fine- to coarse-grainedsandstone, many ironstoneinclusions and coaly frag-ments.

Silty claystone...........Distorted varigrained sand-stone, claystone, andcoaly claystone streaksand inclusions.

Interbedded claystone andcoaly claystone.

Coarse- to medium-grainedsandstone, "granitic",partially crossbedded,frequent claystone frag-ments and streaks.Fine- to medium-grainedsandstone, multiple thindark sandstone streaks,few silty bands.

Thickness

Ft. in.

192 9

6 9

7 4

58 10

5 6

Remarks

Drilling accom-plished thrucasing to driftface.

Bedding angle52o.


Bedding angle320.

Bedding distor-ted.

Do.


11

1110

1 9

31 0

40 6

From-

Denth

Ft.

348

in.

2

108


390 11

394 2

422 3

427 0

394 2

422 3

427 0

To-

Ft. in.

390 11

515 6

Material

Coarse- to fine-grainedsandstone, very smallclaystone inclusions andoccasional coaly streaks,massive.

Interbedded siltstone andc-laystone, sandstonestreaks and inclusions.

Interbedded silty clay-stone and claystone, oc-casional iron bands andconcretions, very thincoaly streaks.

Soft to dense medium-grained sandstone, cross-bedded.

Interbedded silty clay-stone and claystone, fre-quent ironstone concre-tions and streaks, occas-ional thin coaly streaks.

Soft medium-grained sand-stone, chloritic.

Interbedded claystone andsilty claystone, frequentslickensides, occasionalironstone concretions andthin coaly streaks.

Crossbedded medium-grainedsandstone.

Interbedded claystone, sil-ty claystone, siltstone,crossbedded with sandystreaks, no definablechanges (gradational).

Dense medium- to fine-grained chloritic sand-stone, occasional conglom-eratic sandstone bands,occasional calcite-filledfractures, crossbeddedthroughout.

Crossbedded fine-grainedsandstone.

515

Thickness

Ft. in.

42 9

6

520 8

570 0

572 5

603 6

687 2

520 8

570 0

572 5

603 6

687 2

3 3

28 1

4 9

88 6

5 2

49 4

2 5

31 1

83 8

15 11

a

AAverage beddingangle 30°.

Do.

Remarks

Bedding angle atlower contact300.

Average beddingangle 36°.Probable faultintersectionwithin interval. I

Bedding angle atlower contact17°.

703 1

From-

Ft. in.

703 1

Denth

717 8

762 7

870 7

878 11

888 4

942 10

961 0968 9976 9

1007 3

1011 10

109


Ft. in.

717 8

To-

762 7

870 7

878 11

888 4

942 10

961 0

Material

Dark chloritic medium-grained sandstone, con-glomeratic sandstonebands.

Interbedded silty claystoneand fine-grained siltysandstone, occasionalcrossbedding and slicken-sides bottom 6 feet.

Dark conglomeratic sand-stone, medium- to fine-grained, occasional clay-stone inclusions and frac-tures with calcite fill-ing.

Silty claystone, coalystreaks.

Very fine-grained siltysandstone.

Interbedded siltstone, sil-ty claystone and claystone,occasional very fine-grained silty sandstone,no demarcation and beddingundefinable.

Coarse angular to conglom-eratic sandstone, occas-ional claystone inclu-sions.

Sandy siltstone............Conglomeratic sandstone....Crossbedded medium-grainedsandstone.

Dark claystone, silty andsandy streaks.

Coarse-grained to conglom-eratic sandstone, occas-ional claystone and sand-stone streaks and clay-stone blebs.

Thickness

Ft. in.

14 7

44 11

108 0

8 4

9 5

54 6

18 2

Remarks

Bedding angle25°.

Bedding angle atlower contact24°.

Maximum beddingangle 10°.

No definablebedding, somedistortion.Strong watercourse 1,106to 1,110 feet.Probable faultintersection.

968976

1007

993

7830

906

1011 10

1315 0

4 7

303 2

627316 0-62 -8

I

From-

Deoth

Ft.

1315

in.

0

110


To-

Ft.

1354

in.

7

Material

Interbedded and crossbeddedsandstone, siltstone andclaystone, coaly streaksbeginning at 1,356 feet.

Medium-grained to conglom-eratic sandstone, coalystreaks.

Eska conglomerate, thinsandstone lenses.

Thickness

Ft. in.

39 7

21 1

49 4

Remarks


1354 7

1375 8

1375 8

1425 0

*

Bottom of hole.

NOTE: Hole surveyed at 1,015 feet and 1,400 feet. No appreciabledeviation.

From-

Ft. in.

0 0

Deoth

1936

00

111

Logs of Drill Holes, Western Part of District

Log, Hole MC-1

Location:

Elevation:

1,675 feet N. and 1,043 feet E. of the SW. corner, sec. 23,T. 19 N., R. 2 E., Seward Meridian, Alaska.

Collar of hole: 1,063 feet, mean sea level datum.


44 2

464851

4109

63 0

68 10

46 4

To-

Ft. in.

19 0

3644

4851

109

63 0

68 10

79 2

02

Material

Glacial clay, gravel, andboulders.

Silty claystone...........Soft claystone and coalyshale.

Soft dark shale, coalystreaks.

COAL, bony streaks........Coaly claystone............Soft gray shale............

Soft claystone, coaly andshale streaks.

Interbedded claystone, sil-ty claystone and silt-stone.

Soft gray shale............COAL.......................

Coaly claystone...........COAL.......................

Coaly claystone...........Bony COAL..................

Coaly claystone...........Interbedded and crossbeddedclaystone, siltstone, andfine-grained sandstone.

Compact light-gray clay....

Thickness

Ft. in.

19 0

178

. ..

22

611

2 2

11 3

5 10

02

10 4

7985

8787

8888

8991

Remarks

22

45

01

60

8587

8788

8889

24

50

16

6 02 2

17

11 5

7-foot core loss.

No sample taken.

11-foot coreloss. Beddingangle 19 feetto 63 feet, 55°to 650.1-foot, 8-inchcore loss.

Do.

No sample taken.Core badly bro-ken.

Core badly broken.No sample taken.Core badly bro-ken.

Core badly broken.No sample taken.Core badly bro-ken.

Core badly broken.1-foot core loss.

Bedding angle681C.

91 0109 4

109 9

118

64

5109 4

From-

Ft. in.

109 9

110 0

110 10

111 4

112 11

114 8116 6

120 4

122 4

124 4

126 0

126 4

220 4

Denthr-

To-

Ft. in.

110 0

110 10

111 4

112 11

114 8

116 6120 4

122 4

124 4

126 0

126 4

220 4

230 11

112

Log, Hole MC-1 (Con.)

Material

Dark gray slickensidedclay.

Bone COAL..................

Interbanded COAL, bone, andclaystone.

Fine-banded bright COALwith thin calcite parting.

Fine-banded bright COALwith thin streak of cal-cite and blebs of coarsesilty impurities.

Fine-banded bright COAL....Fine-to-coarse banded COALwith clay parting.

Fine-to-coarse bandedbright COAL.

Dark-gray carbonaceous claywith streak of coal.Fine-banded COAL withstreak of bone.

Gray sandstone, coarse-grained.Light-gray fine- to medium-grained sandstone, occas-ional coaly streaks andfragments.

Interbedded' claystone andsiltstone.

Coaly shale................Sandstone, coaly blebs.....Coaly shale................Bony COAL..................Coaly claystone, bony coalbands.

Interbedded claystone,siltstone, very fine-grained sandstone, occas-ional coaly fragments andcalcite streaks.

Thickness

Ft. in.

3

10

6

1 7

1 9

13

1010

2 0

2 0

1 8

4

94 0

10 7

5 19

3 45 8

10 2

50 4

)

Remarks

Bedding angle68-0.

7-inch core loss.Bedding angle 68-°

Bedding angle 68-° .

) E-18650. Bed-ding angle68°0.) Bedding angle68 °.

Do.Do.

I

) True thicknessof sample calcu-lated to be48-4 inches.Bedding angle

.682 .

Not included insample.

I

I

230236236240245

110919

236236240245255

0919

11

Average beddingangle 60°

No sample taken.

255 11 306 3

From-

Ft. in.

306 3

326 4342 2

343 0

520 11

683 3

690 0

691 4692 10

Depth

694695695695696696697697700

700702703706706

113


7151002464

854810

To-

Ft. in.

326 4

342 2343 0

520 11

683 3

690 0

691 4

692 10694 7

695695695696696697697700700

702703706706708

15

10024648

548

104

Material

Very fine- to medium fine-grained gray sandstone.

Claystone.................Claystone, coaly streaks...

Fine- to medium-grainedgray sandstone, occasionalcoaly fragments.


Claystone, coaly streaks,occasional iron concre-tions.

Claystone with many bandsand streaks of coal.

COAL, some bony...........Claystone, many streaks ofcoal.

Bony COAL..................Coaly claystone...........COAL.......................SiO2 concretion...........Coaly claystone...........Bony COAL..................Coaly claystone...........Bony COAL..................Claystone, many streaks ofcoal.

Bony COAL..................Coaly claystone...........Bony COAL..................Coaly claystone...........Bony COAL..................

Claystone, many streaks andbands of coal.

COAL, some bony...........COAL.......................Bone.......................COAL, some slightly bony...Claystone, streaks andbands of coal.

COAL.......................Coaly claystone...........

Thickness

Ft. in.

20 1

15 1010

177 11

162 4

6 9

1 4

11

69

64522

1 22

2 104

1 911

3 42

1 6

1 3


Bedding angle68°.) Sample No. 8.

)

)

)

)

)

) Bedding angle60°.

Remarks

708 4 709 7

709710711712712

771108

710711712712712

71108

11

11

04183

))

)

)

Sample No. 9.

712 11716 4

716 4717 2

3 510

-I

From-

Ft. in.

717 2

720 10722 10

724 10727 1

730 7734 1

Deoth .

734734737738740741741

114


58114806

744 1744 5

748 11749 4749 6

753 10

759 10760 1

763 5764 4764 10

765 8766 2

722 10724 10

727 1730 7

734 1734 5

734737738740741741744

81148061

To-

Ft. in.

720 10

Material


Bony COAL..................Claystone, many streaks andbands of coal.


COAL.......................Claystone, many coalstreaks.

Bony COAL..................COAL.......................Claystone (parting)........COAL.......................Claystone, coal bands.;....COAL.......................Claystone, many bands andstreaks of coal

Bony COAL..................COAL, occasional thin clay-stone partings.

Bony COAL..................Coaly claystone...........Claystone, many bands andstreaks of coal.

Bony COAL..................

Coaly claystone............Claystone, many streaks andbands of coal.

COAL.......................Bony COAL..................Claystone, many streaks ofcoal.

Ironstone..................Claystone, many streaks ofcoal.

744 5748 11

749 4749 6753 10

759 10

760 1763 5

764 4764 10765 8

766 2767 6

Thickness

Ft. in.

3 8

2 02 0

2 33 6

3 64

33 3

52 4

46

2 7

44 6

52

4 4

6 0

33 4

116

10

61 4

Remarks

Bedding angle55°.) Sample No. 10.Bedding angle500.

)

) Sample No. 11.

))

)

)Bedding angle55°.

))

)

5-foot, 2-inchcore loss. Nosample taken ofsmall amountbony COAL re-covered.

No sample taken.Do.

Bedding angle53° .

1

I

S

From-

Denth

Ft.

767

in.

6

115


788 0788 10

799 0799 6800 4

807 5

812 8813 1

816 0816 4

817 8821 6

To-

Ft. in.

788 0

788 10799 0

799 6800 4807 5

812 8

813 1816 0

816 4817 8

821 6824 2

Material

Interbedded claystone,coaly claystone, occas-ional iron concretions andbands.

Claystone......................Interbanded claystone andcoal (apparently).

Coaly claystone...........Bony COAL..................COAL, occasionally slightlybony.

Claystone, many coalstreaks and bands.

Ironstone..................Claystone, many coalstreaks and bands.

COAL.......................Claystone, many streaks andbands of coal.

COAL, some bony............Claystone, many streaks andbands of coal.

COAL.......................SiO2 concretion............COAL, some slightly bony...Claystone, many streaks andbands of coal.

COAL, slightly bony........Claystone.................COAL.......................Claystone with many bandsand streaks of coal.

Claystone..................Ironstone..................Claystone.................Fine-grained sandstone.....

Claystone, occasionalcoaly streaks.

Thickness

Ft. in.

20 6

1010 2

610

7 1

5 3

52 11

41 4

Remarks

824825826828

836836837837

838841842848

2804

0607

5530

825826828836

836837837838

841842848920

932

8040

6075

5303

0

32

1

27

108

6448

667

10


) Sample No. 12.

)

Bedding angle520.

No sample taken.

) Sample No. 13.Bedding angle

45°.)

)Bedding angle55°.

No sample taken.

Do.

Bedding angle55°.

3 010

5 972 3

11 9920 3

Bottom of hole.

From-

Depth

Ft.

013

in.

00

116

Log, Hole MC-2

Location:

Elevation:

1,560 feet N. and 1,180 feet E. of the SW. corner, sec. 23,T. 19 N., R. 2 E., Seward Meridian, Alaska.



14 8

464850

00

11

55 6

102 6111 3

112 8122 0125 4

143 0

146 0

162 0191 0

192 4

248 4

46 0

Ft.

1314

To-

485055

0116

in.

08

102 6

111 3112 8

122 0125 4143 0

146 0

162 0

191 0192 4

248 4

346 0

Material

Overburden - gravel........Clayey conglomeratic sand-stone.

Interbedded siltstone andfine-grained sandstonewith claystone bands.

Fine-grained sandstone.....Silty claystone............Medium- to fine-grainedsandstone.

Interbedded claystone andsiltstone, fine-grainedsandstone and coalystringers on bottom.

Silty claystone............Dense medium-grained sand-stone, gray.

Claystone.................Dark shale.................Interbedded claystone,siltstone, and fine-grained sandstone.

Dense gray medium-grainedsandstone.

Siltstone, ironstone bands,and concretions, calcitestringers.

Claystone.................Limestone, brown stain.....

Claystone to silty clay-stone, light gray with oc-casional sandy streaks.

Claystone, dark gray withoccasional interbeddedsiltstone lenses and iron-stone concretions.

Thickness

31 4

224

0117

Ft.

131

in.

08

47 0

81

9317

95

448

Remarksi

1

3 0

16 0

291

04 Average bedding

angle 50°.56 0

97 8

From-

Deoth

Ft.

346

117


in.

0

349 3

349 9

352 9353 5

356 6356 8357 10

359 6364 6

370 0

372 9374 9

391 0392 3

393 6

401 5401 9

404 5405 2406 3

409 7

411 0413 0

To-

Ft. in.

349 3

349 9

352 9

353 5356 6

356 8357 10359 6

364 6370 0

372 9

374 9391 0

392 3393 6

401 5

401 9404 5

405 2406 3409 7

Material

Claystone, many streaks andbands of coal.Bony COAL..................

Claystone, streaks andbands of coal.


Coaly claystone...........COAL.......................Claystone, many streaks andbands of coal.

Do.Dark gray claystone, silt-stone band.

COAL, one SiO2 concretionand some slightly bony,

Claystone..................Interbedded claystone,siltstone and very fine-grained sandstone.

Claystone.......................Interbanded claystone andcoal.

COAL, occasional thin clay-stone partings and occas-ional calcite streaks.

Coaly claystone...........Claystone, occasional bandsand streaks of coal.

Coaly claystone...........Bony COAL..................COAL, some bony, many cal-cite streaks.

Interbanded coal and clay-stone.

Claystone.................Claystone, occasionalstreaks and inclusions ofcoal.

Thickness

Ft. in.

3 3

6

3 0

83 1

21 21 8

5 04 6

2 9

Remarks

Bedding angle55°.

No sample taken.2-foot, 7-inchcore loss.

No sample taken.

Do.

3-foot core loss.

Bedding angle55°. No sampletaken.

) Sample No. 14.Bedding angle60°.

216

11

03

33

7 11

42 8

13

914

))

Do.

411 0 1 5

413 0414 5

21

05

I

DE

From-

Ft. in.

414 5

419 3421 2

421 9

422 6423 0

423 6

430 5431 3433 0

467 10

475 0

507 0

534 0534 11

--pth

To-

Ft. in.

419 3

421 2421 9

118


422 6

423 0423 6

430 5

431 3433 0467 10

475

507

0

0

Material

Bony COAL, some calcitestreaks.

Coaly claystone............Claystone, many streaks andbands of coal.

Bony COAL.................

Coaly claystone............Claystone, coal streaks andbands.

COAL, occasional calcitestreaks, a few thin clay-stone partings.

Coaly claystone............Fine-grained sandstone.....Interbedded claystone,siltstone, and fine-grained sandstone.

Interbedded claystone andfine-grained sandstonewith included fragments ofeach.

Medium dense light-gray"granitic" sandstone, oc-casional small coaly frag-ments.


Claystone.................Bony COAL...................

Coaly claystone...........Claystone.................Coaly claystone...........Claystone, many streaks andbands of coal.

Coaly claystone...........Bony COAL..................Coaly claystone...........Claystone..................

134

Thickness

Ft. in.

4 10

1 117

9

66

6 11

7 2

32 0

27 0

114 2

109

10

Remarks

) 6 inches ofironstone ex-cluded.

) Bedding angle520.

1

)

534 0

534 11539 1

I

)) Sample No. 15.Bedding angle55o .

539539539541

543544546546

136

10

10856

539539541543

544546546548

36

1010

8560

2340

22

101 9

11 6

)

I

From-

Ft. in.

548 0

564 10

581 3

589 11

929 10

934 0

934 11935 2

936 5937 6937 8

Denth

To-

Ft. in.

564 10

581 3

589 11

929 10

934 0

934 11

935 2936 5

937 6937 8940 0

119


Material

Fine-grained sandstone,thin clayey streaks.Interbedded claystone,siltstone, occasional coalstreaks.

Coaly claystone, a few coalbands.

Moderately crossbeddedfine-grained sandstonegrading down to siltstone,clayey binder throughout.

Dark claystone, coalystreaks.

Claystone, many streaks,bands, and inclusions ofcoal.

Ironstone..................Claystone, many streaks andbands of coal.

Bony COAL..................Ironstone..................Claystone, many streaks andbands of coal.

Coaly claystone............Bony COAL..................Coaly claystone............Ironstone..................Bony COAL..................

Coaly claystone...........Bony COAL..................Claystone.................COAL, some slightly bony...SiO2 concretion...........COAL, some slightly bony...

Coaly claystone............COAL, some slightly bony...

Coaly claystone...........Bony COAL.:................Coaly claystone............Bony COAL..................Coaly claystone............

Thickness

Ft. in.

16 10

16 5

8 8

339 11

4 2

11

31 3

1 12

2 4

4 01143

1 9

483

1 22

5 7

Remarks


No sample taken.

) Sample No. 16.

) Bedding angle55°.

)

)

) Bedding angle500.

)Do.)

) Do.

940944944945945

947947948948949949

955957960961963963964

001136

3736810

56

57693

944944945945947

947948948949949955

957960

961963963964965

011363

7368

105

65

76930

22

11

111

211369

ue

From-

Ft. in.

965 0

966968968969970971972975

603

93732

120


975 5977 5977 10

980 8

981981984984984987

990991992993995997

81013112

9511053

968968969970971972975975

ptn

I To-

977 5977 10980 8

981 8

Ft. in.

966 6

03937325

981984984984987990

991992993995997999

1013

1129

5110530

Material

Claystone, many streaks ofcoal.

COAL, some slightly bony...Claystone, parting.........COAL .....................Ironstone concretion .......COAL, some slightly bony...Coaly claystone............COAL.......................Claystone and coaly clay-stone.

COAL, some slightly bony...Coaly claystone............Claystone, many streaks andbands of coal.


Ironstone..................COAL.......................Ironstone..................COAL, some slightly bony...Coaly claystone............Claystone and ironstoneconcretions, many bandsand streaks of coal.

Coaly claystone............COAL, some slightly bony...Claystone, parting.........COAL, some slightly bony...Coaly claystone...........Claystone, many streaks andbands of coal.

Claystone.................Claystone, streaks andbands of coal.Ironstone..................Claystone, many streaks andbands of coal.

Do.Interbedded claystone andsiltstone.

Claystone.................Claystone, many streaksbands of coal.

Thickness

Ft. in.

1 6

1 63

1 66

1 48

2 113

2 05

2 10

1 0

22 3

28

2 33 7

81 6

12 51 101 9

1 310

102 4

)

)

)

Remarks

I

)

)

Bedding angle40°.

Core badly bro-ken.

)

)

) Sample No. 17.

)

Bedding angle50°.

Bedding angle400.

I

1

999 01000 3

1001 11001 11

1004 31010 3

1028 01029 0

1000 31001 1

1001 111004 3

1010 31028 0

1029 01030 1

617

11

09

01

I

De

From-

Ft.

10301030

in.

13

121


1031 81032 3

1033 31034 0

1043 101044 4

1051105210531054105510551056

1058105810611063

08

10105

11

1460

)th

To-

1032 31033 3

1034 01043 10

1044 41051 0

Ft.

10301031

in.

38

1052105310541055105510561058

1058106110631069

10691071

1071107110761095

810

105

111

4600

60

610

43

Material

Coaly claystone............COAL.......................

Coaly claystone............Claystone, many streaks ofcoal.

Coaly claystone............COAL, some slightly bony...

Coaly claystone............Claystone, streaks andbands of coal.

Do.COAL.......................Ironstone..................COAL, some slightly bony...Bony COAL..................Coaly claystone............Claystone, streaks ofcoal.

Coaly claystone............COAL, some bony...........Coaly claystone............Claystone, many streaks andbands of coal.

Ironstone..................'Claystone, many streaks andbands of coal.

Claystone.......................Bony COAL..................Claystone.. ..................Interbedded claystone,siltstone and very fine-grained sandstone.

Fine- to medium-grainedsandstone with coalystreaks, moderately cross-bedded to dense.

Interbedded claystone and

Thickness

Ft. in.

21 5

71 0

99 10

66 8

11

11

316

823

11562

3260

Remarks

) Sample No. 18.Core badly bro-ken.

) 3-foot coreloss between1,029 and 1,039feet.Loss assumed tobe COAL.

Bedding angle40°.

)

))

Do.

)

1069 01069 6

61 6

1071107110711076

06

104

646

11

No sample taken.418

1095 3

1140 1

1140 1

1162 0

44 10

21 11siltstone.

U

From-Depth

Ft.

1162

in.

0

122


1167 6

1173 5

1174 01176 0

1200 1

1230 11

1359 21361 0

1363 9

1367 4

1369 01371 0

To-

Ft.

1167

in.

6

1173 5

1174 0

1176 01200 1

1230 11

1359 2

1361 01363 9

1367 4

1369 0

1371 01405 0

Material

Claystone, many streaksand bands of coal.

COAL, some slightly bony,occasional calcitestreaks.

Ironstone with coal inclu-sions.

Claystone..................Interbedded claystone, andsiltstone.

Moderately crossbeddedfine-grained sandstone,clayey streaks.

Fine- to medium-grainedsandstone, occasionalcoaly blebs and fragmentsand claystone fragments.

Claystone.......................Claystone, many streaks ofcoal.

COAL, a few thin partingsand a few calcite streaks.


Claystone.................Interbedded claystone andsiltstone, one 4-inch bandcoaly claystone at 1,377feet.

Thickness

Ft. in.

5 6

5 11

7

224

01

30 10

128 3

) Sample No. 19.2-foot coreloss.

Remarks

12

109

Average beddingangle: 50°.

) Sample No. 20.Bedding angle:40°.

3 7

1 8

234

00

I

Bottom of hole.

From-

Denth

Ft.

0

in.

0

123

Log, Hole MC-3

Location:

Elevation:

1,236 feet N. and 1,600 feet E. of the SW. corner, sec. 23,

T. 19 N., R. 2 E., Seward Meridian, Alaska.



106 0112 0

114 10

209 8

372 6

399 0

435 1

476 5

482 6

532 0533 8537 3

549 0

550 8

372

To-

Ft. in.

106 0

112 0114 10

209 8

399 0

435 1

476 5

482 6

532 0

533 8537 3549 0

550 8

582 2

6

Material

Overburden of sand, finegravel, and clay matrixwith large boulders.

Overburden.................Dense medium-grained toconglomeratic sandstone.

Pebble to cobble conglomer-ate (Eska) with sandstonelenses up to 8 feet thick.

Dense medium-grained sand-stone, occasional conglom-eratic sandstone bands andclaystone streaks.

Pebble to cobble conglomer-ate, sandstone lenses upto 2 feet.

Soft gray-to-brown clay-stone.

Fine- to medium-grainedbasic sandstone, occas-ional clayey streaks andbands.

Basic (green) silty clay-stone.

Very fine-grained sand-stone, occasional siltystreaks and claystonebands.

Siltstone.................Dark basic sandstone.......Interbedded siltstone andvery fine-grained sand-stone.

Dense fine- to medium-grained sandstone.

Dark claystone to siltyclaystone.

62

26 6

94 10

162 10

Thickness

Ft. in.

106 0

010

36 1

41 4

6 1

49 6

Remarks

Churn drilled to90 feet.

Core lost.

Part of Eskaconglomerateformation.

Considered baseof Eska con-glomerate.

13

11

879

1 8

31 6

ueFrom-

. I

Ft.

582

in.

2

124


591 9

599 1603 11

607 10

650 0

660 7

666 6

676 0

684 2

714 9729 8

735 5738 7739 0

)tnTo-

Ft. in.

591 9

599 1

603 11607 10

650 0

660 7

666 6

676 0

684 2

714 9

Material

Dark fine-grained sand-stone, occasional calcitestreaks.

Interbedded siltstone andvery fine-grained sand-stone, calcite streaks.

Silty claystone...........Fine to medium-grainedsandstone, silty streaks,chloritic.

Claystone, some interbeddedsilty claystone and silt-stone.

Claystone and soft grayshale.

Crossbedded very fine-grained sandstone andsiltstone, medium-grainedsandstone blebs andstreaks.

Siltstone to fine-grainedsandstone.

Claystone, occasional thinsilty streaks.

Siltstone, occasionalcrossbedded very fine-grained sandstone, fewcalcite streaks.

Silty claystone............Interbedded siltstone andvery fine-grained sand-stone.

Claystone.......................Bone..................................Interbedded claystone andsiltstone.

Silty claystone............Calcareous shale...........COAL, thin bony streaks....Silty claystone............Fine-grained sandstone,calcareous and clay inclu-sions.

Bony COAL..................

Thickness

Ft. in.

9 7

7 4

43

42

1011

2

10 7

5 11

9 6

8 2

30 7

I

1

Remarks

Bedding angle30° to 35 .

729735

*

85

45

119

738 7739 0749 8

749758759761761

83

11311

758759761761765

3113

112

3 25

10 8

8 71 81 4

83 3

Bedding angle30°.

No sample taken.

765 2 765 6 4 Do.

From-

Depth

Ft.

765772773

in.

682

125


793 0

800 0

804 11805 11

809 7814 6815 0

901 3

909 1

924 1

932 7932 10

Ft.

772773793

in.

820

To-

800 0

804 11

805 11809 7

814 6815 0901 3

909 1

924 1

Material

Soft sandy shale...........COAL.......................Crossbedded siltstone andvery fine-grained sand-stone, many shale bands.

COAL.......................

Dark claystone, few coalystreaks.

Siltstone, dense...........Dark claystone, few coalystreaks.

Claystone to dark shale....Coaly claystone...........Claystone grading in tosiltstone.

Hard dense fine-grainedsandstone with inclusionsof fine-grained "granitic"sandstone and siltstone.

Fine- to medium-grainedgranitic sandstone, semi-porous, occasional coalblebs.

Claystone, silty and sandytop 2 feet.

Soft clay band.............Silty claystone, slicken-sides.

Clay.......................Claystone ....................COAL.......................Claystone.......................

Thickness

Ft. in.

7 26

19 10

7 0

4 11

13

08

4 116

86 3

7 10

15 0

8 6

31 7

6 38

3 613 2

Remarks

No sample taken.

6-foot core loss.Assumed to beCOAL.

Bedding angle35° to 45 .

Slip or faultbeginning at932 feet 7 in-ches.

932 7

932 10934 5

934940941944

584

10

940941944958

84

100

Bottom of hole.

627316 0-62 -9

U

From-Depth

Ft. in.

0 0

110 0135 0

220 6

222 6228 3

234 10

242 6

264 2

383 0

544 0

552 0

749 9

755 0760 5

126

Log, Hole MC-4

Location:

Elevation:

921 feet N. and 1,964 feet E. of SW. corner, sec. 23,T. 19 N., R. 2 E., Seward Meridian, Alaska.



To-

Ft. in.

110 0

135 0220 6

222 6

228 3234 10

242 6

264 2

383 0

544 0

552 0

749 9

755 0

760 5764 4

Material

Sand, clay, and boulderoverburden.

Tsadaka conglomerate.......Eska conglomerate withsandstone lenses.

Gray medium-grained massivesandstone.

Eska conglomerate..........Gray dense fine- to medium-grained massive sandstone.

Interbedded Eska conglomer-ate and sandstone.

Gray massive fine-grainedsandstone.

Eska conglomerate, sand-stone lenses.

Fine- to medium-grainedsandstone with Eska con-glomerate lenses, occas-ional streaks and frag-ments of claystone andcoaly matter.

Red-to-brown silty clay-stone.

Interbedded siltstone andfine-grained sandstone,claystone bands and len-ses, calcite streaks onbottom.

Light-gray silty claystone,limestone bands.

Claystone.......................Light-gray micaceous silt-stone and fine-grainedsandstone.

Thickness

Ft. in.

110 0

2585

06

,-

2 0

56

97

7 8

21 8

118 10

161 0

8 0

197 9

5 3

Continued bydiamond-coredrilling.

Remarks

Contains waterchannels. Churndrilled.

Churn drilled.Do.

Base of Eskaconglomerate at544 feet. I

I

Bedding angle25°.

53

511

I

From-

Ft. in.

764 4

769 4

Deoth

771772772773773

2391

10

127


788 0792 0

802 0

851 0

854 2

860 0

861 9

865 0865 4

866 10867 0

880 6

902 2903 3

Ft. in.

769 4

771 2

772 3772 9773 1773 10788 0

792 0802 0

851 0

854 2

860 0

861 9

865 0

865 4866 10

867 0880 6

902 2

903 3903 8

To- Material

Claystone, few thin coalystreaks.

Soft medium-grained sand-stone, clay bands.

Soft claystone.............Coaly claystone............Soft white clay............COAL.......................White-to-gray claystone,hygroscopic.

Coaly claystone...........Dark claystone, many coalstreaks, slickensides.

Claystone, occasional len-ses of siltstone and fine-grained sandstone, occas-ional ironstone bands.

Calcareous medium-grainedsandstone.

Fine-grained crossbeddedsandstone.

Dense medium-grained sand-stone.

Dense fine-grained sand-stone.

Claystone band.............Dense medium-grained sand-stone.

Claystone band.............Dense medium-grained sand-stone.

Claystone, occasional iron-stone concretion.

COAL.......................Claystone.......................

COAL.................. .......Claystone.......................COAL.......................Coaly claystone...........COAL.......................Claystone.................COAL, few bony streaks.....Claystone, coaly streaks...

Thickness

Ft. in.

5 0

1 10

1 1649

14 2

410

00

49 0

3 2

5 10

Remarks

1 9

3 3

41 6

213 6

21 8

1 15

No sample taken.

Do.Bedding angle22°.

No sample taken.

Do.

Do.

Do.

903904904908917919929935

801061176

904904908917919929935937

0106

11768

392952

41

11658

112

I

DeFrom-

Ft.

937940

in.

88

128


DtnTo-

Ft.

9401012

in.

80

Material

COAL.......................Interbedded claystone,siltstone and fine-grainedsandstone, occasionalironstone concretions andoccasional coaly streaks.

Thickness

Ft.

371

in.

04

Remarks

No sample taken.

Bottom of hole.

From-Depth

Ft.

0139180

in.

000

129

Log, Hole MC-5

Location:

Elevation:

635 feet N. and 2,384 feet E. of the SW. corner, sec. 23,T. 19 N., R. 2 E., Seward Meridian, Alaska.



332 9

347 10

380 6

381 2386 10

413 0

864 4905 9

Ft.

139180332

in.

009

To-

347 10

380 6

381 2

386 10413 0

Material

Glacial overburden.........Eska conglomerate..........Silty claystone gradingthrough siltstone to fine-grained sandstone, occas-ional angular pebble in-clusions and coaly blebsin lower one-half.

Hard, dense conglomeraticsandstone.

Eska conglomerate, inter-mingled pebble and cobble,and hard, dense conglomer-atic sandstone.

Claystone..................

Eska conglomerate..........Medium- to fine-grainedbanded sandstone.

Eska conglomerate and med-ium to congomeratic sand-stone, occasional clay-stone slips, aggregatesandstone content 175feet.

Green and brown claystone..Gray arkosic sandstone.....

Thickness

Ft.

13941

152

in.

009

15 1

32 8

8

i IRemarks

Churn drilled.Do.

Continued bydiamond-coredrilling. Av-erage beddingangle 20°.

Contact beddingaverage 20°.


Base of Eskaconglomerate at864 feet 4 in-ches.

Bedding angle20°.

864 4

526

451

4116

82

4

53

905 9922 0

Bottom of hole.

From-

Ft. in.

0 0

DeDth

117 0

163 0

206 5

230 4

265 5

275 2

856 3

915 0

1175 101185 4

130

Log, Hole MC-6

Location:

Elevation:

322 feet N. and 2,773 feet E. of the SW. corner, sec. 23,T. 19 N., R. 2 E., Seward Meridian, Alaska.



To-

Ft. in.

117 0

163 0

206 5

230 4

265 5

275 2

856 3

915 0

1175 10

Material

Glacial overburden andTsadaka conglomerate ?


Dark foliated shale withsmall angular sandstoneinclusions and sandstonelenses.

Eska conglomerate, pebbleand cobble.

Medium-grained to partiallyconglomeratic sandstone.

Siltstone, 1-inch coalstreak at 265 feet 5 in-ches.

Eska conglomerate with med-ium-grained to conglomer-atic sandstone lenses, oc-casional claystone slips,aggregate sandstone con-tent 180 feet.


Eska conglomerate, occas-ional sandstone lenses,coaly streaks and frag-ments and claystone bands.Sandstone..................Green claystone............

Thickness

Ft. in.

117 0

46 0

43 5

23 11

35 1

Remarks

Churn drilled.No record ofoverburdendepth.

Continued bydiamond-coredrilling.

Possible contactof Tsadaka andEska conglom-erate at 206feet 5 inches.

Bedding angle15° to 25.

Do.

Base of Eskaconglomerate at1,175 feet 10inches.

i

9 9

581 1

I

58 9

260 10

11851202

40

916

68

Bottom of hole.

From-

Ft. in.

0 0

5 0

166 2

198 11

244 2

423 3

445 3

455 10

507 6

509 2

520 9

535 3

979 6

1109 0

Deoth

To-

Ft. in.

5 0

166 2

198 11

244 2

423 3

445 3

445 10

507 6

509 2

520 9

535 3

979 6

1109 0

1110 0

131

Log, Hole MC-7

Location:

Elevation:

252 feet S. and 3,550 feet E. of the NW. corner, sec. 26,T. 19 N., R. 2 E., Seward Meridian, Alaska.



Material

Unconsolidated glacialoverburden.

Tsadaka conglomerate,granitic cobbles andboulders.

Interbedded and crossbeddedclaystone, siltstone, andfine-grained sandstone.

Tsadaka conglomerate, gran-itic cobbles and boulders.

Eska conglomerate, containsoccasional claystone andsandstone lenses with in-cluded coaly fragments.

Massive medium- to fine-grained gray sandstone.

Dark basic medium- to fine-grained sandstone, calcitestreaks.

Eska conglomerate, occa-sional sandstone lenses.

Dark basic sandstone, cal-cite streaks.

Gray sandstone, calcitestreaks.

Dark basic sandstone, cal-cite streaks, occasionalpebbles, occasional coalystreaks.

Eska conglomerate, occa-sional coaly streaks andfragments.

Interbedded siltstone andfine-grained sandstone,dark-gray color.

Siltstone..................

Thickness

Ft. in.

5 0

161 2

32 9

45 3

179 1

22 0

Remarks

10 7

51 8

1 8

Bedding angle00 to 10°.

Bottom on Sept.10, 1954.

11 7

14 6

444 3

129 6

1 0

From-DeDth

Ft.

1110

in.

0

132


1168 10

1191 8

1209 11

1571 5

1586 0

1696 11

1756 5

1757 6

1760 1

Ft.

1168

in.

10

To-

1191 8

1209 11

1571 5

1586 0

1696 11

1756 5

1757 6

1760 1

1762 0

Material

Interbedded siltstone andfine-grained sandstone,dark-gray color, somecrossbedding. Grades topredominately fine-grainedsandstone.

Fine-grained sandstone.....

Medium-grained sandstone,some crossbedding.


Interbedded siltstone andfine-grained sandstone,coal inclusions at 1,574feet.

Interbedded claystone,siltstone, and fine-grained sandstone, con-tains red hematite orlimonite silt. Light-tanfine-grained sandstonelens from 1,636 feet 11

inches to 1,638 feet andfrom 1,690 feet 10 inchesto 1,691 feet 2 inches.

Interbedded claystone,siltstone and fine-grainedsandstone, dark-graycolor.

Medium-grained sandstone...

Interbedded dark-gray clay-stone and siltstone.

Medium-grained sandstone, afew calcite stringers.

Thickness

Ft. in.

58 10

22 10

18 1

361 6

14 7

110 11

59 6

1 1

2 7

1 11

Remarks

Bedding angles:1,133 feet,400; 1,168feet, 440.

Bedding angle:1,175 feet,47

Bedding angle:1,204 feet,53.

Bedding angles:1,348 feet 7inches, 55°;1,447 feet,57°; 1,550 feet8 inches, 46°;1,562 feet,53°.

Contact beddingangle: 1,638feet, 400.

I

I

Bedding angles:1,749 feet 6inches, 33 01,753 feet 4inches, 25°.

Contact angle:1,757 feet 6inches, 23° .

Bedding angle25° .

v

1

From-From-

· ·

Ft.

1762

in.

0

133


1773 2

1777 11

1806 11

1808 7

1809 0

1810 7

181318141817

183518371838

1106

084

ptnTo-

Ft. in.

1773 2

1777 11

1806 11

1808 7

1809 0

1810 7

1813 11

181418171835

183718381839

060

848

Material

Interbedded dark-grayclaystone, siltstone, andfine-grained sandstone.

Carbonaceous shale, manyslickensides.

Interbedded dark-gray clay-stone, siltstone, andfine-grained sandstone,occasional slickensides.


Light-tan claystone, resin-ous lustre.

Dark-gray to black clay-stone.


COAL, stringer............Dark-gray claystone........Fine-grained sandstone.....

Dark-gray claystone........Carbonaceous shale.........Dark-gray to black clay-stone, occasional slicken-sides.

Light-tan fine-grainedsandstone with claystonestreaks and inclusions.

Dark-gray to black clay-stone with occasional coalstreaks and stringers,occasional slickensides.

Dark-gray to black clay-stone, many slickensides.

COAL, stringer.............Dark-gray to black clay-stone, many slickensides.

COAL with calcite streaks,stringer.


Thickness

Ft. in.

11 2

4 9

29 0

1 8

5

1 7

3 4

317

166

Remarks

Bedding angle:1,766 feet 2inches, 150.

Bedding angles:1,782 feet 5inches, 10°;1,801 feet 10inches, 150.

Bedding angle:1,824 feet 7inches, 15° .

Contact anglewith COAL,20°.

1839 8

1840 4

1841 10

1843 01843 2

1844 1

1840 4

1841 10

1843 0

1843 21844 1

2 88

1 4

8

1 6

1 2

211

1

41844 2

1844

1844

2

6

uDeFrom-

· ·

Ft.

1844

in.

6

134


1853 6

1882 0

1889 2

1891 6

Ft.

1853

in.

6

)thTo-

1882 0

1889 2

1891 6

1959 6

Material

Dark-gray to black clay-stone, occasional to manyslickensides. One 1-inchstringer of COAL at 1,852feet 6 inches.

Interbedded claystone,siltstone, and fine-grain-ed sandstone.

Interbedded siltstone andclaystone, dark-gray.

Fine-grained sandstonegrading to medium-grainedsandstone.

Medium-grained sandstone,slightly "granitized".

Do.Do.

Medium-grained sandstone,slightly "granitized", oc-casional coal streaks.

COAL, stringer.............Claystone, dark-gray toblack, many slickensides.

Coaly claystone............COAL, stringer.............Claystone with a few coalstreaks and inclusions,occasional slickensides.

COAL, stringer.............

Claystone, dark-gray, occa-sional coal streaks andinclusions, occasionalslickensides.

COAL, stringer.............Claystone, dark-gray, occa-sional coal streaks andinclusions................

ThicknessFt. in.

9 0

28 6

7

2 4

2

68

101119

0

606

Plug bit used.Identificationmade on basisof cuttings.

No recognizablebedding butfractures at 5°to 10° believedto occur alongbedding.planes.

Plug bit used.Identificationmade on basisof cuttings.

Do.

Remarks

1

195919701981

600

197019812000

006

2000 62000 7

2000 72006 2

200620062006

2710

200620062010

710

2

15 7

53

3 4

2

5 6

1

I

Bedding angle 5°.

Bedding angle00 to 5°.

2010 2

2010 4

2015 102015 11

2010 4

2015 10

2015 112016 4

Bedding angle 16°.

5

I

From-

Deoth

Ft.

2016

in.

4

135


To-

Ft.

2016

in.

10

Material

Very fine-grained sand-stone, light-tan, a fewcoal streaks and inclu-sion.

Claystone, dark-gray, manyslickensides, a few coalstreaks and inclusions.

Thickness

Ft. in.

6

Remarks

Contact angle:2,016 feet 4inches, 15°.

2016 10

I

2017 0

2

Bottom of hole.

From-

Dip of hole: -45°.

Depth

Ft.0

in.00

136

Log, Hole P-1

Location:

Elevation:

Bearing:

126 feet N. and 944 feet E. of the E.' corner, sec. 27,T. 19 N., R. 2 E., Seward Meridian, Alaska.

Collar of hole: 899 feet, mean sea level datum.

S. 39° E.

13 11

140 66

205 11

246 6

247 3

251254257260261263264264267271272272277303304304305306306309309

0631974118479101039110115

Ft.13

140 6

205 11

246 6

247 3

251 0

To-

in.

11

254257260261263264264267271272272277303304304305306306309309309

631974

118479

101039

110115

10

Material

Sand and boulder overbur-den.


Medium-grained sandstone,occasional coaly streaksand silty bands.

Interbedded siltstone,claystone, occasional ironstreaks.

Dark claystone, multiplecoaly streaks.

COAL, few claystone bonystreaks.

Coaly claystone and bone...COAL, thin bony streaks....Coaly claystone...........COAL.......................Coaly shale................Bony COAL..................Coaly shale................COAL with SiOa concretion..Soft shaleCOAL.......................Claystone.................COAL (some bony)...........Claystone, sandy streaks...Bony COALClaystone.................Bone.......................Claystone.................Bony COALFoliated shale.............COAL.......................Claystone.......................

Thickness

Ft. in.13 11

126 7

65 5

40 7

9

3 9

3 62 92 101 81 10

97

2 93 81 3

25 1

26 056

1 211

3 045

Bedding angle300

) Sample No. 1.

) Sample No. 2.

)

)

)

) Sample No. 3.

No sample taken.No sample taken.

Remarks

I

From-

Depth

Ft.309311314314

in.

101004

137

Log, Hole P-1 (Con.)

319 0322 10326 4

329 4

332 0

339 4

349 7353 3356 4

Ft.

311314314319

in.

10040

To-

322 10326 4329 4

332 0

339 4

349 7

353 3356 4427 2

Material

COAL.......................Carbonaceous shale.COAL.....................Large coal blebs in clay-stone.

Claystone, coaly streaksCOAL.......................Dark claystone, coalystreaks.

Interbedded coaly claystoneand bony COAL.

COAL, occasional claystoneand bony streaks.

Claystone, coal bands andstreaks.

COAL, SiO2 streak..........Coaly shale................Interbedded claystone,siltstone, fine-grainedsandstone, occasionalcoaly streaks and calcitestringers.

Coaly shale................Claystone.......................Coaly claystone...........COAL, occasional SiO 2 andclaystone streaks.

Claystone, many coalstreaks and bands, occa-sional ironstone bands.

Claystone, ironstone lenseslenses.

Carbonaceous shale, clay-stone partings or bands.

Claystone, ironstone con-cretions.

Carbonaceous shale........COAL...............................Claystone..................Coaly claystone...........Bony COAL..................Carbonaceous shale andclaystone, coaly streaks.

Thickness

Ft. in.

2 02 2

44 8

333

1060

2 8

7 4

10 3

33

70

8110

Remarks

) Sample No. 4.

No sample taken.

) Sample No. 5.

) Sample No. 6.Bedding angle15°.

No sample taken.

) Sample No. 7.Bedding angle15.

No sample taken.

Do.

427427428428

260

10

427428428436

60101

436 1

454 11

465 7

473 11

454 11

465 7

473 11

476 9

4610

7 3

18 10

10 8

8 4

2 10

3 392610

5 9

476480480480481482

909

1153

480480480481482488

09

11530

From-

Ft. in.

488 0

Depth

490 5495 4

512 10

635 10

681 6682 1

682 2684 2684 7

687687688697699699701

705

138


4111110690

3

To-

Ft in.490 5

495 4512 10

635 10

681 6

682 1682 2

684 2684 7687 4

687688697699699701705

1111106903

Material

Bony COAL..................

Claystone.................Fine-grained sandstone.....

Soft to dense medium-grained sandstone, manycoaly streaks and frag-ments.

Soft to dense fine-grainedsandstone and siltstone,ironstone concretions.

Siltstone.................COAL band..................

Siltstone..................Carbonaceous shale........Bony COAL..................

Coaly claystone...........Bony COAL..................Coaly shale...............Bony COAL..................Coaly shale................Claystone.................COAL, 1-inch claystoneparting at 704 feet 8inches.


COAL.......................

Bone.......................COAL ....................Bony COAL..................Interbedded claystone andcarbonaceous shale.

Claystone.................COAL.... ...................Shale......................Bony COAL..................Claystone.......................COAL.......................Claystone.......................

Thickness

Ft. in.2 5

417

116

123 0

45 8

71

2 05

2 9

71 08 111 8

31 34 3

3 1

2

1

Sharply bedded.Bedding angle10°

No sampletaken.

Do.

Do.

Bedding angle10°.

No sampletaken.

Do.Do.

Do.

Do.

Remarks

No sampletaken.

Bedding angle0.0 .

708 4

708 6708 4

708708710712

724730731733734735735

6802

939322

11

708710712724

730731733734735735740

8029

39322116

12

12

2427

5 61 61 6

111 0

94 7

From-

Dnnth

Ft.740741

in.64

139


751 6

754 4

766 11769 5

771 7772 11

788 0

788 8789 0

Ft.

741751

in.

46

To-

754 4

766 11

769 5771 7

772 11788 0

788 8

789 0797 0

Material

COAL, bony streaks.........Interbedded dark shale andclaystone, coal streaks,and iron concretions.

COAL.......................

Claystone, ironstonelenses.

Dark shale.................Claystone, ironstonelenses, and coal frag-ments.

COALDark shale, coaly claystonetop 2 feet. No contact.

COAL.......................

Claystone.................COAL, few SiO 2 streaks.....

Coaly claystone...........COAL.......................Claystone.................Bony COAL..................Claystone.................Bony COAL..................Dark shale.................COAL.......................Coaly shale................Interbedded fine-grainedsandstone, siltstone,claystone streaks.

COAL.......................Claystone, lenses of silt-stone, ironstone, andfine-grained sandstone.

..

ThicknessFt. in.

1010 2

2 10

12 7

22

115

62

41

797799799802803803804805808809

006

106730

1010

799799802803803804805808809822

0610673010107

8

48 0

2 06

3 48189

3 101 0

12 9

1013 8

No sampletaken.

Do.

No sampletaken. Man-gled core.

No sampletaken.

Do.

Do.

Do.

Do.

Do.

Remarks

822 7823 5

823 5837 1

of hole.Bottom

From-

Depth

Ft.

021

198

in.

000

140

Log, Hole MC-8

Location:

Elevation:

2,163 feet N. and 2,595 feet W. of SE. corner, sec. 26,T. 19 N., R. 2 E., Seward Meridian, Alaska.



353 7

395 2

417 8

425 1

433 5

434 11435 8

453 4

460 7470 8

Ft.

21198353

in.

007

To-

395 2

417 8

425 1

433 5

434 11

435 8453 4

460 7

470 8471 7

Material

Glacial overburden.........Eska conglomerate..........Eska conglomerate..........

Interbedded claystone,silty claystone and veryfine-grained sandstone.

Fine- to medium-grainedsandstone, granitized.

Eska conglomerate (smallerpebbles than normal).

Interbedded claystone r

silty claystone and veryfine-grained sandstone.

Medium-grained sandstone,granitized.

Silty claystone............Medium- to fine-grainedsandstone, granitized withoccasional coal streaks.Interbedded very fine-grained sandstone andfine-grained sandstonewith occasional coal andfine-grained sandstoneinclusions.

Medium-grained sandstone...Interbedded silty claystoneand very fine-grainedsandstone.

COAL .......... ............Claystone........ .....COAL. .. .... ...............Claystone.................COAL ......................

Ft.

21177155

in.

007

Thickness

41 7

22

7

6

5

8 4

1 6

917 8

7 3

10 111

93

1 03

2 1

Remarks

Churn drilled.Do.

Continued bycore drillingto bottom ofhole.

Average beddingangle 30° .

Considered baseof Eska con-glomerate.


) F-64479.

)

)

I

I

471472472473473

747710

472472473473475

477

1011

From-Depth

Ft.

475476478478478481481481481481482

483483484485485

in.

11128

11013

101123

281137

141


490 10

492493493493

421

882

To-

492 4

493493493494

Ft.

476478478478481481481481481482483

483484485485490

in.

128

11013

10lii32

81137

10

212318½612

Material

Claystone.......................COAL.......................Carbonaceous shale.........Bone coal..................COAL.......................COAL.......................Claystone.................COAL.......................Siltstone parting..........COAL....................... ..Claystone with thin streaksof coal.

Claystone.......................COAL.... ...................Interbanded shale and coal.Claystone.................COAL .......................

Claystone with coal streaksand inclusions.

COAL.......................Claystone. ................COAL..................Bone, mixed claystone andcoal in thin streaks andlayers.

COAL.......................Claystone with occasionalcoal streaks and inclus-ions.

COAL .......................Claystone with thinstreaks of coal.

Fine-grained sandstone.....Claystone with many coalstreaks and inclusions.

Ironstone..................Claystone.................Siltstone.......................COAL.......................Bony Coal..................Claystone, many coalstreaks and inclusions.

Bony coal..................

Thickness

62

411 2

45 3

1 6

io15

10

Ft. iin.

22 1

63

2 11271 431

11

)) F-64480.

))

)

) 7-inch coreloss.

) F-64481.

Core badlybroken.

)r h 1

)

Cnma 1o l7r

Remarks

)

494 61495 11i

500 8501 24

503 1506 2

507 11508 1508 5508 7508 8509 1

510 0

627316 0 -62 -10

495 112500 8

501 22503 1

506 2507 11

14

5

82

621 102

31

19

508508508508509510

157810

2421511

1 0511 0broken.

From-

Ft. in.

511 0

Depth

515516518520520523

410426688

142


528 5

529 4

530 8530 11

531 10533 6533 10'

535 6

538 10539 1

541 6541 10

548 8550 0

555 0556 0556 5

516518520520523528

10

42661

85

To-

Ft. in.515 4

529 4

530 8

530 11531 10

533 6533 10½535 6

538 10

539 1541 6

541 10548 8

550 0555 0

556 0556 5558 6

Material

Interbedded claystone,siltstone and very fine-grained sandstone withoccasional coal streaksand inclusions.

COAL.......................Hard gray claystone........COAL.......................Claystone parting..........COAL.......................Claystone with thin streaksand inclusions of coal.


Claystone with occasionalcoal streaks and inclu-sions.

Ironstone..................Claystone with coal streaksand inclusions.

COAL.......................Hard siltstone parting.....COAL.......................

Claystone with many streaksand bands of coal.

Ironstone..................Claystone with occasionalstreaks and bands of coal.

COAL.......................Claystone-occasionalstreaks, inclusions, andbands of coal-one --inchcalcite band.

COAL.......................Claystone, many streaks,bands, and inclusions ofcoal.

COAL.......................Bony coal..................Claystone with manystreaks, bands, and inclu-sions of coal.

112

34

ThicknessFt. in.

4 4

661

2

12

9

11

1 4

311

1 8412

1 71

3 4

32 5

46 10

)

)

Rusty colorwith calciteinclusions.

) F-64483.

)22-inch coreloss.

Bedding angle35°.

) F-64482.

Remarks

I

I

15

40 Includes one

3-inch band ofcoal.

1 05

2 1

From-

Depth

Ft.

558559

in.

67

143


581 8

694 10

930 7

Ft.

559581

in.

78

694 10

930 7

981 7

To- Material

Bony coal..................Interbedded siltstone,fine-grained sandstone andmedium-grained sandstone.

Medium-grained sandstonewith occasional fine-grained sandstone bandsand occasional coal frag-ments.Interbedded gray-to-greenclaystone and silty clay-stone containing a reddishhematite or limonite silt.Interval contains occa-sional bands fine-grainedsandstone; fine-grainedsandstone bands sometimescontain calcite bands,streaks, or inclusions.

Interbedded claystone,silty claystone, fine-grained sandstone and med-ium-grained sandstone,occasional slickensides.

Thickness

Ft.

122

113 2

235 9

51 0

in.

11

Remarks

Possible faultintersectionat about 775feet as evi-denced by lossof drillingfluid andheavy ground.

Average beddingangle 30° to35 .

Bottom of hole.

From-

Ft. in.

0 0

108 0172 0

265 0

313 0314 4

317 7

340 6

343 6

356 1

395 1

426 7

429 5

Depth

To-

Ft. in.

108 0

172 0265 0

313 0

314 4317 7

340 6

343 6

356 1

395 1

426 7

429 5

144

Log, Hole MC-9

Location:

Elevation:




Material

Glacial and/or stream gra-vel and sand.

Eska conglomerate..........Variable claystone, shale,and sandstone?

Interbedded claystone,silty claystone and silt-stone with occasionalslickensides.

Ironstone..................Very fine-grained sand-stone.

Interbedded claystone,silty claystone, and silt-stone with fine-grainedsandstone inclusions inlower 3 feet.

Fine-grained sandstone-crossbedded.

Light-green to dark clay-stone with occasional cal-cite stringers.

Interbedded fine-grainedsandstone and siltstonewith blebs and bands ofclaystone.

Fine-grained to medium-grained hard dense, sand-stone, granitic, withcoaly streaks and frag-ments.

Silty claystone with coalstreaks.

Fine banded bright COAL.Highly fractured andslickensided. Thin min-eral films of calcite andkaolinite on fracture sur-faces.

Thickness

Ft. in.108 0

6493

00

48 0

13

43

22 11

3 0

12 7

39 0

31 6

2 10

1 1

Remarks

Churn drilled.

Do.Do.

Cased and con-tinued by dia-mond-coredrilling.

Bedding angles:370 feet, 55°;376 feet, 50°;390 feet, 45°.

) F-33782.

I

1

430 6

p

From-

Ft. in.

430 6

431 0

432 11

433 3-

Denth

434437439442

3048

145

Hole MC-9 (Con.)

444 8

446 0

448 10451 8453 6

455 8

456 4

457 2

460 7

460 10461 6

471 1

472 8476 7

437439442444

0488

To-

Ft. in.

431 0

432 11

433 31

434 3

446 0

448 10

Material

Dark-gray claystone withthin streaks of coal.

Fine banded bright COALwith small calcareousblebs and sandy inclu-sions.

Dark-gray claystone withthin streaks of coal.

Fine banded bright COAL.

Claystone.................Sandy siltstone...........Coaly claystone...........Fine banded bright COALwith thin films of calcitemineral on fracture sur-faces.

Claystone with thin streaksof coal.

Fine banded bright COALwith thin films of mineralcalcite on fracture sur-faces.

Claystone with coal bands.Claystone.................Gray claystone with thincoal streaks.

Fine banded bright COALwith thin films of calciteon fracture surfaces.


Fine banded bright COALwith thin films of calciteon fracture surfaces.


Fine banded bright COAL....Dark claystone with slick-ensides.

Siltstone with calcitestringers.

Claystone with coal blebs..Fine banded bright COALwith blebs of clay andthin films of calcite on

2232

1 4

2 10

9440

Thickness

Ft. in.

0 6

1 11 )

) 2-inch coreloss.

) F-33783.

) F-33784.inch coreloss.

2-

Remark

451 8453 6455 8

212

10102

456 4

457 2

460 7

460 10

461 6471 1

472 8

476 7479 11

8

10

3 5

4

89 7

7

) F-33785.

5-inch coreloss?) 1-foot, 3-inch core loss.

)

) F-33786. 1-inch core loss.

33

114

fracture surfaces.

From-

Ft. in.

479 11

Deothr-

481 2482 6

483 0

483 8

485486486487487

146

Hole MC-9 (Con.)

26

1101

489 5

499 4

To-

Ft. in.

481 2

486486487487489

611015

482 6483 0

483 8

485 2

499 4

510 0

Material

Dark claystone with multi-ple coal bands.

Soft claystone.............Dark claystone with multi-ple coal streaks.Light-buff fire clay, occa-sional coal fragments.

Claystone with multiplecoal bands.

Dark claystone............COAL.......................Claystone..................COAL.......................Dark claystone with coalstreaks.

Interbedded claystone andvery fine-grained sand-stone.

Medium fine-grained sand-stone with coal blebs andstreaks, occasional silt-stone inclusions.

Soft claystone............Silty claystone............Soft claystone.............COAL.......................Silty claystone............COAL.......................Claystone......................COAL .......................Claystone with coal frag-ments.

Interbedded dark claystoneand carbonaceous shale.

COAL.......................Dense light-colored silt-stone.

Claystone.......................Interbedded claystone,siltstone and very fine-grained sandstone withoccasional calcite streaksand ironstone inclusions.


Thickness

Ft. in.

1 3

1 46

8

1 6

1 4511

2 4

9 11

10 8

510511513513513513514514514

Remarks

I

I

060678578

511513513513513514514514515

606785782

11

666119216

Stringer.

Bedding angle35°.

Stringer.

Band.

Stringer.

Do.

515 2

517 0517 2

517 7519 8

566 11

517 0

517 2517 7

519 8566 11

567 5

1 10

25

247

13

6

I

From-Ft. in.

567 5

Denth

569 6

570 0

574 10

578 0579 0

580 5581 0

590591593593

147


0768

605 0

778 0

789 11

790 10

826 0

570 0

574 10

578 0

579 0580 5

581 0590 0

591593593605

7680

To-Ft. in.

569 6

Material

Fine banded bright COALwith thin films of calciteon fracture faces.


Fine banded bright COAL....

Dark claystone with thinstreaks of coal.

COAL.......................Claystone with coalystreaks.

COAL.......................Dark claystone with occa-sional coal streaks.

COAL.......................Dark claystone.............Bony coal..................Interbedded claystone,siltstone and soft darkshale.

Interbedded grey-greenclaystone and silty clay-stone containing reddishhematite or limonitesilt.

Above grades into dark-graysilty claystone.

Dense very fine-grainedsandstone with calcitestreaks.

Dark-gray silty claystone,occasional sandy bandsand slickensides.

Light-gray fine-grainedsandstone.

Dark-gray claystone, siltyclaystone, siltstone,grading downward, occa-sional slickensides andcalcite stringers.

Soft dark shale............Interbedded dark-gray clay-stone, siltstone, calcitestreaks and slickensides.

11

778 0

789 11

790 10

826 0

830 6

899 10

902 0908 0

Ft.2

Thickness

6

4 10

3 2

in.

1

05

79 0

1 71 11

211 4

173 0

11 11

11

35 2

Remarks

) F-33787. 1-inch core loss.

) 2-inch coreloss.

Bedding angle40.

Band.

Stringer.

Bedding angle:820 feet, 45°.


Bedding angles:840 feet, 45°;890 feet, 60°;895 feet, 55°;898 feet, 30°.

Bedding angles:905 feet, 400;906 feet, 45°.

4 6

830 6 69 4

899 10902 0

26

20

From-

Deoth

Ft.

908909

in.00

148,


To-

Ft.909911

in.00

Material

Soft dark shale............Claystone..................

Ft.12

in.00

Thickness Remarks

Bottom of hole.

I

I

ueFrom-

I I

Ft.

060

in.

00

149

Log, Hole MC-10

Location:

Elevation:

1,570 feet N. and 1,921 feet W. of the SE. corner sec. 26,T. 19 N., R. 2 E., Seward Meridian, Alaska.



65 8

6768

06

76 1

67 0

Ft.

6065

in.

88

6876

61

77 2

78 4

tToTo- Material

Glacial overburden........Interbedded claystone,siltstone and very fine-grained sandstone withoccasional coal inclu-sions.

Bony COAL..................

Carbonaceous shale.........Interbedded claystone,siltstone, and fine-grained sandstone withoccasional coal bands notmore than - inch thick.

Bony COAL..................

Soft dark claystone withoccasional coal bands lessthan - inch thick.


Bony COAL with claystoneinclusions.

Soft dark claystone withoccasional coal inclu-sions and thin coal bandsless than - inch thick.

Interbedded claystone, sil-ty claystone, siltstoneand fine-grained sand-stone.

Soft dark claystone withoccasional coal bands lessthan 4 inch thick.

Claystone.................

Thickness

1 4

17

67

Ft.

605

in.

08

77 2

78 4

79 0

81 2

90 0

103 6

106 11

79 0

81 2

90 0

103 6

106 11

111 0

1 1

1 2

8

2 2

8 10

13 6

3 5

4 1

Remarks

Churn drilled.

Core badlybroken. Nosample takenfor analyses.

One beddingangle mea-sured at 60°.

No sampletaken foranalyses.

Contact beddingangle 75°.

Bedding angle60°.

From-Depth

Ft.

111111112

in.

056

150


114 2

123 0

149 6

301 5

304 0

373 11

379 1

438 4

440 0

Ft.

111112114

in.

562

I To-

123 0

149 6

301 5

304 0

Material

COAL ....... ......................Claystone..................Ironstone with coal inclu-sions.

Fine- to medium-grainedsandstone with occasionalclaystone inclusions.

Interbedded claystone,siltstone, very fine-grained sandstone, andfine-grained sandstone.

Interbedded claystone,siltstone, and fine-grain-ed sandstone containing areddish-to-brown (hematiteor limonite) silt.

Fine-grained sandstone con-taining reddish (hematiteor limonite) silt and cal-cite stringers and inclu-sions.

Dark-gray to green inter-bedded claystone, silt-stone, and fine-grainedsandstone, calcite inclu-sions at 360 feet 8 inch-es.

Medium-grained sandstonewith occasional claystoneinclusions.

Interbedded claystone,siltstone and fine-grainedsandstone with occasionalslickensides.

Claystone with coal bandsand inclusions.

Interbedded claystone,siltstone and fine-grainedsandstone with occasionalslickensides and calcite

Thickness

Ft. in.

51 11 8

8 10

26 6

151 11

2 7

69 11

6 2

59 3

1 8

72 11

Evidence ofslight slip-page at 116feet. Contactbedding angle:123 feet, 60°.

Remarks

1

1

373 11

379 1

438 4

440 0

a

Bedding angle50°.

Bedding angle:430 feet, 60 .

Bedding angle:491 feet, 80°.Evidence ofslippage at

512 11

From-Depth

Ft. in.

151

Loq, Hole MC-10 (Con.)

512 11518 6

522 8523 10

524 8525 11526 8

527 6

532536537539

680

11

To-

Ft. in.

518 6522 8

523 10524 8

525 11526 8527 6

532 6

536537539572

80114

Material

stringers. Coal inclu-sion at 489 feet 8 inch-es; i-inch coal band at491 feet 2 inches.

Coaly claystone...........Interbedded claystone,siltstone and fine-grainedsandstone.

Coaly claystone............Claystone with occasionalbands and inclusions ofcoal.

Coaly claystone...........Gouge material.............Limestone containing asmall amount of pyrite.

Claystone with occasionalcoal bands and inclusions.

Coaly claystone...........Fine-grained sandstone.....Coaly claystone............Interbedded siltstone andfine- to medium-grainedsandstone.

Interbedded claystone,siltstone and fine-grain-ed sandstone with occas-ional very narrow coalbands and inclusions.

Coaly claystone, manyslickensides.

Claystone with occasionalvery thin coal bands.

Bony COAL..................

COAL.......................Claystone and coaly clay-stone.

Interbedded claystone,siltstone and fine-grainedsandstone with occasionalnarrow coal streaks andbands.

Mud gouge..................

54

1 210

1 39

10

5 0

4 24

2 1132 5

8 4

8

8

4

21 7

2 9

Ft.

Thickness

in.

72

Remarks

500 feet.Bedding angle:511 feet, 35°.

Bedding angle50°.


Core badlybroken.

No sample takenfor analyses.

Do.

572 4

580 8

581 4

582 0

582 4582 6

584 1

580 8

581 4

582 0

582 4

582 6584 1

586 10

586 10 587 2 4

From-

Ft. in.587 2

Denth

588 10

590593593595595

152


461047

598 11599 5

604 0

605 4606 5

611 10

612 5

612 11613 4

615 10

618 8

623 4

644 7

645 4

593593595595598

To-

Ft. in.588 10

590 4

61047

11

599 5604 0

605 4

606 5611 10

612 5

612 11

613 4615 10

618 8

623 4

644 7

645 4

646 6

Material

COAL...........................

Claystone with occasionalnarrow bands and inclu-sions of coal.

Coaly claystone............Fine-grained sandstone.....Coaly claystone............COAL.......................Claystone with many coalstreaks, bands, and inclu-sions.

Bony COAL..................Claystone with occasionalbands, streaks, and inclu-sions of coal.

Interbedded claystone,siltstone and fine-grainedsandstone.

Coaly claystone............Soft dark claystone withoccasional coal bands,streaks and inclusions.

COAL with calcite streaksand ironstone inclusions.

Claystone, coal streaksand inclusions.

Coaly claystone............Claystone, occasional coalstreaks.

Ironstone and COAL withcalcite streaks.

Claystone with occasionalcoal streaks and inclu-sions.

Interbedded fine-grainedsandstone, siltstone, andclaystone with occasionalvery small coal inclu-sions.

Dark claystone with coalstreaks and inclusions.

Coaly claystone, slicken-sides.

Thickness

Ft. in.

1 8

1 6

3 24

1 63

3 4

64 7

1 4

15

15

Remarks


Bedding angle40°.

I

IDo.

7

6

52 6

2 10

4 8

21 3

9

1 2

a

V

Core badly brok-en.

From-

Ft. in.

646 6

654 2

655 1655 4

655 11

658 6

659 2

663 0

664 0

673 10

677 4677 11

682 0682 8

733 5

735 1

737 5

Deoth

To-

Ft. in.654 2

655 1

655 4655 11

658 6

659 2

663 0

664 0

673 10

677 4

677 11682 0

682 8733 5

735 1

737 5

741 0

742 0

r153


Material

Interbedded claystone,siltstone and fine-grained sandstone.

Dark claystone, occasion-al coal streaks and inclu-sions.

COAL, hard and bright......Light, brown siltstone withclaystone inclusions.

Dark claystone, occasionalcoal bands, streaks, andinclusions.

Ironstone, calcite streaksand inclusions.

Interbedded claystone,siltstone and fine-grain-ed sandstone, occasionalcalcite streaks, and in-clusions.

Dark claystone, coalstreaks and bands.

Interbedded claystone,siltstone and fine-grainedsandstone.

Dark claystone, many coalstreaks, bands, and inclu-sions.

Limestone..................Dark claystone, many coalstreaks and inclusions.

Coaly claystone...........Interbedded claystone,siltstone and fine-grainedsandstone; occasionalcoaly streaks and bands.

Dark coaly appearing gougematerial.

Soft claystone, occasionalslickensides, occasionalcalcite streaks and car-bonaceous inclusions.

Dark coaly appearing gougematerial.Yellow-brown silty clay-stone, occasional coalstreaks and inclusions.

Thickness

Ft.

7

in.

8

11

37

2 7

8

3 10

1 0

9 10

3 6

74 1

850 9

Remarks


Bedding angle30 .

Core badly brok-en. 1-foot, 5-inch core loss.

Core badly brok-en.

I

1 8

2 4

3 7

1 0741 0

From-Deoth

Ft.

742744

in.

04

154


744 11

752 10

754 6

756 1757 6

763 11

765 8

767 1769 1

769 10772 4

793 7

Ft.

744744

in.

411

To-I0-

752 10

754 6

756 1

757 6763 11

765 8

767 1

769 1769 10

772 4793 7

802 7

.-

Material

Claystone.. ..................Siltstone and fine-grainedsandstone with large cal-cite inclusion runningparallel to core.

Dark claystone with occa-sional coal streaks,bands, and inclusions.

Coaly claystone............

Bony COAL..................

Coaly claystone............Claystone, occasional coalstreaks and fragments,occasional slickensides.


Claystone with calcite in-clusion and slickensides.

Coaly claystone ............Limestone with calcite andcoal stringers.

Carbonaceous shale........Interbedded claystone,siltstone and fine-grainedsandstone; occasional cal-cite stringers; lower 10feet grades to poorly ce-mented medium-grainedsandstone with graniticappearance.

Interbedded dark claystone,fine-grained sandstone,and carbonaceous shalewith occasional coalstreaks and bands.

Thickness

Ft. in.2 4

7

7 11

1 8

1 7

16

55

1 9

1 5

2 09

Remarks

1

ICore badly brok-en.


Core badly brok-en.

221

63

1

9 0

Bottom of hole.

155

Location:

Elevation:

Dip of hole:

Log, Hole MC-11

357 feet S. and 1,665 feet E. of the NW. corner, sec. 35,T. 19 N., R. 2 E., Seward Meridian, Alaska.


Vertical.

Depth

From- To- Material Thickness Remarks

Ft. in. Ft. in. Ft. in.

0 0 160 0 Variable glacial overbur- 160 0 Churn drilled.den.

160 0 234 0 Sandstone, shale and occa- 74 0 Do.sional pebbles (possiblyfrom caving).

Bottom of hole.

Log, Hole MC-12

Location: 16 feet N. and 2,678 feet W. of the SE. corner, sec. 27,T. 19 N., R. 2 E., Seward Meridian, Alaska.

Elevation: Collar of hole: 855.0 feet, mean sea level datum.


Depth


Ft. in. Ft. in. Ft. in.0 0 55 0 Variable glacial overbur- 55 0 Churn drilled.

den.55 0 180 0 Interbedded sandstone, 125 0 Do.

siltstone and claystone,occasional traces of coal.

Bottom of hole.

Location:

Elevation:

Dip of hole:

Log, Hole MC-13

886 feet N. and 3,486 feet W. of the SE. corner, sec. 27,T. 19 N., R. 2 E., Seward Meridian, Alaska.

Collar of hole: 863 feet, mean sea level datum.

Vertical.

From-Depth

Ft.0

110

in.

00

156


Depth


Ft. in. Ft. in. Ft. in.

0 0 160 0 Variable glacial overbur- 160 0 Churn drilled.den.

Bottom of hole.

Log, Hole MC-14

Location: 1,192 feet N. and 3,869 feet W. of the SE. corner, sec. 27,T. 19 N., R. 2 E., Seward Meridian, Alaska.



148 6

150 10

154 8156 8

158 0209 4

213 5215 0

Ft.

110148

in.

06

To.

150 10

154 8

156 8158 0

209 4213 5

215 0218 7

Material

Glacial overburden.........Apparently Tsadaka conglom-erate.

Medium-grained sandstonewith laminated bands ofcarbonaceous shale.

Interbedded medium-grainedsandstone and coarse-grained light-gray sand-stone.

Tsadaka conglomerate.......Interbedded carbonaceousshale, medium-grainedsandstone and Tsadaka con-glomerate.

Tsadaka conglomerate.......Light-gray medium- tocoarse-grained sandstoneand dark-gray claystone.A few bands of coal in theclaystone.

Tsadaka conglomerate.......Poorly cemented dark-grayfine-grained sandstone.

Ft.

11038

Thicknessin.06

2 4

3 10

21

514

13

04

41

77

Remarks

Churn drilled.Do.

Bedding angleabout 100.

Contact beddingangles: 156feet 8 inches,5°. 158 feet,10 .


Contactangle:feet 72°

bedding218

inches,

From-

Ft. in.218 7

219 0

238 10

246 10

247 7

265 1

267 5

267 9268 9

272 11274 1276 5

277 0

280 1282 4

291 0

307 4

308 8

315 5

316 2

Depth

To-

Ft. in.

219 0

238 10

246 10

247 7

265 1

267 5

267 9

268 9272 11

274 1276 5277 0

280 1

157


Material

Laminated carbonaceousshale and coarse-grainedsandstone.

Tsadaka conglomerate withbands of coarse-grainedsandstone.

Silty claystone, occasionalcoal inclusions.

Hard, dense, medium-grainedsandstone.

Interbedded silty claystoneand fine-grained sand-stone.

Claystone with small bandsof coal.

Soft gray clay shale roofrock.

Bright banded COAL.........Black carbonaceous shalewith some thin streaks ofcoal.

Gray clay shale............Dark-gray silty claystone.Hard dense fine-grainedsandstone with calcitestringers.

Dark-gray silty claystone.

Coaly claystone...........Interbedded silty clay-stone and sandstone.

Friable, rusty-red siltyclaystone.

Hard dense light-grey-greenish sandstone withsome ironstain and cal-cite stringers.Interbedded rusty-red andblack silty claystone.

Hard dense fine-grainedsandstone and claystone.

Black silty claystone.....

Thickness

Ft. in.

5

19 10

8 0

9

17 6

2 4

4

1 04 2

1 22 4

7

3 1

Remarks


) F-64484.

Bedding angle10°.

Bedding angle insandstone: 285feet, 570. Noevidence offault.

Bedding angle:308 feet 8inches, 10° .

282291

40

28

38

307 4

308 8

315 5

316 2

319 11

16 4

1 4

6 9

9

3 9

627316 0-62 -11

DE

From-Ft. in.

319 11

332 8342 1

348 0

431 6

441 0

452 1453 10454 5

456 7456 92

459 0459 5

467 1

467 11

473 1

479 5

481 11

)thTo-

Ft. in.332 8

342 1348 0

431 6

441 0

452 1

453 10454 5456 7

456 9½459 0

459 5467 1

467 11

473 1

479 5

481 11

500 11

158

Log, Hole-MC-14 (Con.)

Material

Friable, rusty-red siltyclaystone.

Black silty claystone.Interbedded fine-grainedgray sandstone and blacksilty claystone.

Interbedded silty clay-stone and fine-grainedsandstone with occasionalbands of carbonaceousshale. Predominantlysilty claystone.

Interbedded hard densefine-grained sandstoneand dark-gray siltyclaystone.

Carbonaceous claystone andsilty claystone with 1inch bands of coal.

Bright banded COAL.......Hard gray clay shaleBlack carbonaceous shalewith thin streaks ofcoal.

Bright banded COAL........Black carbonaceous shalewith thin streaks ofcoal.

Soft gray clay shale......Interbedded silty clay-stone and sandstone. Oc-casional thin bands coal.

Carbonaceous claystone andcoal.

Silty claystone, sandyclaystone and a smallamount of coal.

Silty claystone, occasional

d-inch bands of coal.Dense fine-grained sand-stone and silty clay-stone.

Interbedded hard densemedium-grained sandstoneand black silty clay-stone.

ThicknessFt. in.

12 9

95

511

83 6

9 6

11 1

1 97

2 2

21222 2j

57 8

10

5 2

6 4

2 6

19 0

Bedding angle:345 feet 2inches, 23°.

Bedding angles:362 feet, 300;366 feet, 26°;379 feet, 30°;404 feet, 20°.

Bedding angle:44 feet, 37°



Core badlybroken.

Do.

Bedding angles:488 feet, 33°;495 feet, 26°.

1

Remarks

I

From-

Ft. in.

500 11

508 4

511 4

534 10

536 6540 4

548 6

551 0552 5

561 8

570 0

572 0

599 5

609 5614 2

617 11

628 10629 4

Depth

To-

159


Ft.508

in.

4

511 4

534 10

536 6

540 4548 6

551 0

552 5561 8

570 0

572 0

599 5

609 5

614 2617 11

628 10

629 4648 0

Material

Black carbonaceous shalewith occasional thinbands coal and silty clay-stone.

Silty claystone and silt-stone.

Hard, firm, alternate bedsof fine dark-gray sand-stone and silty claystone.

Carbonaceous shale and bonycoal.

Black silty claystone......Silty claystone, carbon-aceous shale and occasion-al small bands of coal.


Coaly claystone and coal...Carbonaceous claystone withsmall inclusions of coaland silty claystone.

Fine-grained sandstone andsilty claystone.

Carbonaceous claystone andsilty claystone with oc-casional bands of coal.

Laminated hard, firm,fine-grained sandstoneand silty claystone.

Hard dense medium-tocoarse-grained light-graysandstone.

Silty claystone............Interbedded silty clay-stone, bone and coal.Coal in bands 2 to 1 inchthick.

Fine-grained sandstone,silty claystone and shale.Hard, firm core.

COAL.......................Fine-grained sandstone,silty claystone and shale,Hard, firm core.

Thickness

Ft. in.

7 5

3 0

23 6

1 8

38

2

19

102

6

53

Remarks

Badly brokencore.


Broken core.


8 4

2 0

27 5

10 0




43

99

10 11

618 8

Bottom of hole.

ueFrom-

- --

Ft.056

in.00

160

Log, Hole MC-15

Location:

Elevation:




165 0

170 0

170 4170 72

175 6

180 2

184 10186 5

188 5190 5

198 7202 5

207 10208 4

208 7210 11211 10

213 4

,LnTo-

Ft. in.56 0

165 0

170 0

170 4

170 7o175 6

180 2

184 10

186 5188 5

190 5198 7

202 5207 10

208 4208 7

210 11211 10213 4

214 11

Material

Glacial overburden.........Medium- to coarse-grainedsandstone. Possibly someTsadaka conglomerate.

Interbedded COAL and clay-stone.

Claystone.......................

COAL.......................Probably interbedded COALand claystone.

Coaly claystone (manyslickensides).

Black carbonaceous shalewith thin streaks of coal.Bright banded COAL.........Black carbonaceous shalewith thin streaks of coal.

Bright banded COAL.........Black carbonaceous shalewith thin streaks of coal.

Coaly claystone............Claystone, occasional bandsand streaks of coal.

Coaly claystone............Black carbonaceous shalewith thin streaks of coal.

Bright banded COAL..........Bone coal..................Bright banded COAL with thinStreaks and films of min-eral matter in cleats andfractures.


5 0

4

314 10½

4 8

4 8

1 72 0

2 08 2

3 105 5

63

2 411

1 6

1 7

Ft.56

109

in.00

Thickness Remarks

Churn drilled.Do.

Do.


Core not recov-ered.

) F-64485.

)

I

4

) F-64486.

) 6-inch coreloss.

Many slicken-sides. Slick-ensides almostparallel tocore axis.

De

From-

Ft. in.

214 11224 11

228 5

229 7

233 6234 3

234234236239243247248249252254255

57811701101181

161


)tnTo-

Ft. in.224 11228 5

229 7

233 6

234 3234 5

234236239243247248249252254255257

781170110118110

Material

Bright banded COAL.........Do.

Bone, mixed thin streaks ofsiltstone and coal.

Coaly claystone with fine-grained sandstone bandsand inclusions. Manyslickensides.

Bright banded COAL.........Hard black carbonaceousshale.

Soft black shale...........Bright banded COAL.........

Do.Do.Do.Do.Do.Do.Do.

Coaly claystone...........Claystone, occasionalstreaks and bands of coal.

Coaly claystone...........Bright banded COAL.........Claystone, bands andstreaks of coal.

COAL (stringer)...........

Claystone, occasionalbands, streaks and inclu-sions of coal.

Interbedded claystone andsilty claystone, occasion-al bands, streaks and in-clusions of coal.Interbedded silty clay-stone, siltstone and fine-grained sandstone. Lowerpart grades to medium-grained sandstone.

Thickness

Ft.10

3

in.06

1 2

3 11

92

22 13 33 83 51 11 93 11 9

52 9

Remarks

) F-64487.) F-64488 1-foot core loss.


Bedding angle65°.

) F-64489.

))))))))

F-64490.F-64491.F-64492.F-64493.F-64494.F-64495.F-64496.

257 10258 0260 0

261 7

262 7

269 0

294 4

258 0260 0261 7

262 7

269 0

294 4

510 7

21

207

1 0

6 5

25 4

16 3

) F-64497.

Bedding angle75°. Corebadly broken.

No beddingangles obtain-able. Core(except thefine-grainedsandstone)weathers to agrayish mass.

From-

Depth

Ft. in.

510 7

525 6

617 7

630 10

639 10

663 7

666 0

691 4

693 5

763 2

774 6

794 8

796 6

162


To-

Ft. in.525 6

617 7

630 10

639 10

663 7

666 0

691 4

693 5

763 2

Material

Medium-grained sandstone,occasional fine-grainedsandstone inclusions, oc-casional coal streaks andinclusions.

Medium-grained sandstone,hard and dense, little orno weathering effect.

Black fine-grained sand-stone and claystone.

Hard dense gray medium-grained sandstone.


Medium-grained sandstone-hard and dense, verylight-rust.

Black fine-grained sand-stone and claystone, occa-sional small segments ofhard rusty sandstone con-taining a small amount ofcalcite.


Black silty claystone andmedium-grained sandstone.From 717.7 to 718.6 ishard dense light-brownfine-grained sandstonewith calcite stringers.

Predominantly coarse-grain-ed sandstone, hard anddense. About 20 percentsilty claystone and sand-stone that readily weath-ers to a soft gray mass.

Interbedded silty claystoneand sandstone.

Hard dense fine-grainedrusty sandstone with cal-cite stringers.

Fine-grained gray sandstoneand silty claystone. Oc-casional rusty segments ofhard dense sandstone.

Thickness

Ft. in.14 11

92 1

13 3

9 0

23 9

2 5

25 4

2 1

69 9

Remarks



I


Bedding angle:663.6 feet,80°.

Weathers to asoft mud.


Readily weathersto a grayishmass. I

774 6 11 4 Bedding angle45°.

Core lost be-tween 791 and793 feet.

794 8

796 6

821 2

20 2

1 10

24 8

I

From-

Deoth

Ft. in.

821 2

822 2

825 11

827 10

834 1839 10

859 2

888 0

930 0

938 5941 7942 1

945 10

949 7

952 6

163


To-

Ft. in.

822 2

825 11

827 10

834 1

839 10859 2

888 0

930 0

938 5

941 7942 1945 10

949 7

952 6

963 7

Material

Light-gray soapy-feelingclaystone. Small amountof coal.

Coaly claystone. Weathersto flaky material.

Soft white soapy-like massof claystone.

Interbanded coal and clay-stone.

Coaly claystone...........Interbedded silty clay-stone, fine-grained sand-stone and coarse-grainedsandstone.

Interbedded light-graycoarse-grained sandstoneand silty claystone.

Medium-hard dense coarse-grained sandstone withsome silty claystone.Many calcite stringers.

Coarse-grained sandstoneand silty claystone, smallminute specks of coal.

Coaly claystone...........COAL.......................Claystone, sandstone and asmall amount of coal.


Hard dense light-graycoarse-grained sandstone.

Interbedded black harddense claystone andlight gray flaky claystonethat has a soapy feel.

Bright banded COAL.........Coaly claystone...........COAL.......................Black claystone and sandyclaystone.


Thickness

Ft. in.

1 0

3 9

1 11

6 3

519

.

94

28 10

42 0

8

Remarks

5

Weathers to agrayish mass.

Predominantlysandstone thatdoes notweather read-ily.

Weathers to asoft mass.

Weathers to asoft flakymass.

) F-65119.

3 26

3 9

3 9

2 11

11 1

1 33 6

811 0

1 0

963964

710

968 4969 0

980 0

964968969980

981

10400

0

From-

Ft. in.981 0

985 4993 2

1021 61023 2

1024 10

1027 8

1039 41039 10

Depth

164


To-

Ft. in.985 4

9931021

10231024

26

210

Material

Interbedded light-graysoapy-feeling claystone,black claystone and smallamount of coal.

Silty claystone...........Claystone, greenish tingeor cast.

Claystone, rusty colored...Claystone, greenish tingeor cast.

Hard medium-grained sand-stone and silty claystone.

Gray silty claystone.......

Hard dense sandstone.......Rusty-colored claystone....

728

ThicknessFt. in.4 4

104

1 81 8

2 10

Remarks

1027 8

1039 4 11 8 Weathers to aflaky mass.

Do.10391046

104

66 6

Bottom of hole.

From-

Dent.h

Ft.

180180

In.

00

165

Log, Hole MC-16

Location:

Elevation:

24 feet S. and 1,260 feet E. of SW. corner, sec. 26,T. 19 N., R. 2 E., Seward Meridian, Alaska.



231 6

239 6

241 6

266 0

270 6

272 0

275 0

276 8277 11

279 5

r To-To-

Ft.

180231

in.06

239 6

241 6

266 0

270 6

272 0

275 0

276 8

277 11279 5

280 6

Material

Glacial overburden.........Apparently medium- tocoarse-grained sandstoneand Tsadaka conglomerate.

Interbedded blue-blacksilty claystone and blackto dark-gray fine-grainedsandstone, occasionaliron stain.

Gray medium-grained sand-stone and sticky clay-stone.

Interbedded medium- tofine-grained sandstoneand silty claystone.

Interbedded medium- tofine grained sandstone,silty claystone and car-bonaceous shale containingoccasional bands andstreaks of coal.

Black silty claystone andlight-tan sandstone con-taining many calcitestringers.

Black to dark-gray badlyfractured silty claystone.

Light-tan medium-grainedsandstone with many cal-cite stringers.

Black silty claystone......Carbonaceous claystone,silty claystone, and oc-casional thin bands ofcoal.

Dark-gray soft silty clay-stone.

Ft.18051

Thickness

in.

06

8 0

2 0

24 6

4 6

Remarks

Churn drilled.Do.

Core badlybroken.

Core has mar-belized appear-ance.

Core badlybroken.

Do.

Do.

1 6

3 0

1 8

11

36

1 1

From-;

Ft. in.

280 6

D-nth

281 9282 1282 4

284 5284 7

290 2

303 5

306 5

317 6

326 5326 6327 6

328 0

328 6

334 2336 2

166


To-

Ft. in.

281 9

282 1282 4284 5

284 7290 2

303 5

306 5

317 6

326 5

326 6327 6328 0

328 6

334 2

336 2336 6

Material

Carbonaceous claystone,silty claystone, and oc-casional thin bands ofcoal.

Bright banded COAL.........Shale..........................Bright banded COAL.........

Shale.....................Interbedded black siltyclaystone and fine-grainedsandstone with a few verysmall coal stringers.

Black silty claystone andsmall amount fine-grainedsandstone with many smallcoal inclusions. A fewcalcite stringers through-out core.

Black silty claystone andfine-grained sandstone.

Interbedded medium-grainedto fine-grained light-graysandstone with occasionalbands of black fine-grain-ed sandstone and blacksilty claystone.

Black silty claystone witha few coal inclusions par-allel to bedding planes.

Bone.......................Bright banded COAL.........Black silty claystone withsmall amount coal.

Soft black mass of carbon-aceous shale, silty clay-stone and small amountcoal.

Interbedded fine-grainedsandstone and silty clay-stone with a few coal in-clusions.

Bright banded COAL.........Shale..........................

Thickness

Ft. in.

1 3

43

2 1

25 7

13 3

3 0

11 1

8 11

11 0

6

6

5 8

2 04

Remarks

Core badlybroken.

) F-65120.

) 4-inch coreloss.

*

I

Bedding angle20°


) F-65121.

) F-65122.

From-

Ft. in.336 6

339 8

341 1

353 11

356 2361 4

364 7

364 11

369 4370 10373 8

378 1380 4

386 10

420 4

421 10426 6431 2

431 8

474 8478 0496 10

Deoth

To-

Ft. in.

339 8

341 1

353 11

356 2

361 4364 7

364 11

369 4

370 10373 8378 1

380 4386 10

420 4

421 10

426 6431 2431 8

474 8

478 0496 10507 1

167


Material

Fine-grained sandstone andblack silty claystone.

Bony COAL with a few smallspecks of resin.


Gray-to-black silty clay-stone, a few calcitestringers.

Black silty claystone......Light-gray, hard, densefine-grained sandstone.

Soft silty claystone orgouge.

Interbedded black siltyclaystone and light-grayhard dense sandstone.

Black silty claystone......Light-gray silty claystone.Black silty claystone andcarbonaceous claystonewith small coal inclu-sions.

Bony coal and claystone....Black silty claystone witha few small coal inclu-sions.

Light-gray to medium-graysilty claystone.

Silty claystone with adistinct rusty color.

Light-gray silty claystone.Dark-gray silty claystone..Silty claystone, rusty-to-lavender.

Silty claystone, hard anddense.

Dark-gray silty claystone..Dark-gray silty claystone..Interbedded hard densefine-grained sandstone andsilty claystone. Sand-stone predominates.

Dark-gray silty claystone..

Thickness

Ft. in.3 2

1 5

12 10

2 3

53

23

4

4 5

124

26

6105

36



Broken and checked.

Core badlybroken.

Do.

Do.


Core broken.Firm core.

Remarks

33 6

1 6

44

886

43 0

31810

4103

507 1 511 11 4 10 Core broken.

From-

Ft. in.

511 11

Denth

512 1

523 0

523 2527 1

542 6

547

168


6

I To-

523 0

523 2

527 1542 6

547 6

Ft.

512

553 6

570 8

576 0

579 0

in.

1

553 6

570 8

576 0

579 0

599 5

Material

Coaly claystone and bonycoal.

Interbedded light-graymedium-grained sandstoneand black silty claystone.

Silty claystone, iron-stained.

Black silty claystone......Interbedded light-gray harddense fine-grained sand-stone and black siltyclaystone.

Black silty claystone witha few bands of light-tansandstone.

Black silty claystone witha few small inclusions ofcoal and carbonaceousclaystone.

Interbedded black siltyclaystone and light-grayfine-grained sandstonewith occasional bands andinclusions of coal. Siltyclaystone predominates.

Light-gray very fine-grain-ed sandstone.


Hard dense light-gray med-ium-grained sandstone.

5 0

6 0

17 2

5 4

3 0

20 5

315

Thickness

Ft. in.

2

10 11

2

115

-L.

Core broken.Bedding angle:537 feet, 7°


Remarks

I

Contact beddingangle: 570feet 8 inches,32°.

Badly brokencore and poorrecovery.

Bottom of hole.

From-

Denth

Ft.

073757980828384

169

Log, Hole MC-17

Location:

Elevation:

2,000 feet N. and 4,597 feet W. of the SE. corner, sec. 27,T. 19 N., R. 2 E., Seward Meridian, Alaska.



Depth


Ft. in. Ft. in. Ft. in.0 0 67 0 Glacial overburden......... 67 0 Churn drilled.

67 0 91 0 Apparently Chickaloon form- 24 0 Do.ation sandstone.

Bottom of hole.

Log, Hole MC-18

Location: 2,990 feet N. and 360 feet W. of the SE. corner, sec. 26,T. 19 N., R. 2 E., Seward Meridian, Alaska.



in.

00480585

To-Ft.

7375798082838490

in.

04805850

Material

Glacial overburden........Chickaloon formation......Claystone..................Hard gray shale cap rock...Bright banded COAL.........Coaly claystone...........Bony COAL.................Claystone with many bands,streaks, and inclusions,of coal, some calcitestreaks.

Light-green fine-grainedsandstone, grades to in-terbedded claystone andsilty claystone in lower2 feet.

ThicknessFt. in.73 02 44 4

42 51 3

95 7

Remarks

Churn drilled.Do.

) F-65123.

No sample taken.

90 0 103 0 13 0

From-

Ftv in.

103 0

DeDth

125 10

130 6131 6132 3

133

149149150151

152153153154154154155

170


6

4987

106

1046

1010

To-

Ft. in.

125 10

130 6

131 6132 3133 6

149 4

Material

Interbedded claystone andsilty claystone, occasion-al coal streaks and inclu-sions, occasional calcitestreaks, grades to coalyclaystone with many slick-ensides in lower 5 feet.

Claystone, many streaks,bands, and inclusions ofcoal.

Coaly claystone............Bright banded COAL.........Black carbonaceous shalewith thin streaks of coal.

Silty claystone, occasionalstreaks and inclusions ofcoal, occasional fine-grained sandstone bands,occasional slickensides.Calcite on slickensidesurface.

Bone coal..................Bright banded COAL.........Hard gray shale............Bright banded COAL withthin streaks of shale.Bright banded COAL.........Siltstone parting..........Mixed bone and bright coal.Bright banded COAL.........Siltstone parting..........Bright banded COAL.........Hard black carbonaceousshale.


Bright banded COAL.........Coaly claystone...........Silty claystone, occasionalstreaks and inclusionscoal, occasional slicken-sides. Calcite on slick-enside surfaces.

Thickness

Ft. in.

22 10

4 8

1 09

1 3

15 10

51111

1 3

149150151152

153153154154154155157

Remarks



I

98710

61046

10102

) F-65124.

Rejected.

)

)

)

) F-65125.

) F-65126.)

) F-65126.

8462404

I

11

157 2159 6

160 0161 0162 4

159 6160 0

161 0162 4168 0

2 46

115

048

From-

Deoth

Ft.

168168168170170172172174

in.

07

10126

110

171


174 3175 0

175 7

175 8

175 9176 62

177 4178 7183 42

183 11

185 6185 10

190 2190 11192 5

193 6

193 11

196 0196 5

198 7

Ft.168168170170172172174174

in.

710

126

1103

To-

175 0175 7

175 8

175 9

176177 44

178 7183 42183 11

Material

Bright banded COAL........Siltstone parting..........Bright banded COAL.........Siltstone parting..........Bright banded COAL ........Limestone parting..........Bright banded COAL........Bone coal with calcite incleats and fractures.

Bright banded COAL.........Black carbonaceous shalewith thin streaks of coal.Bright COAL with very thinstreaks of shale.

Hard black carbonaceousshale.

Black banded COAL..........Black carbonaceous shalewith thin streaks of coal.

Black carbonaceous shale...Bright banded COAL.........Hard black carbonaceousshale with thin streaks ofcoal.

Claystone, occasionalstreaks and inclusions ofcoal.

Fine-grained sandstone.....Claystone, many slicken-sides. Calcite on slick-enside surfaces.

Fine-grained sandstone.....Claystone......................Claystone with many coalstreaks and inclusions.

Black carbonaceous shalewith thin streaks of coal.

Bright banded COAL.........

Black carbonaceous shale...Silty claystone with manystreaks and inclusions ofcoal.

Black carbonaceous shale...

Thickness

Ft. in.

73

1 31

2 45

1 13

97

1

1

.-

14

391

Remarks

) F-65127.

)

)

)

) F-65128.

)

)

) F-65129. 3k-inch core loss.

185 6 1 7

44 4

185 10190 2

190 11192 5193 6

193 11

196 0

196 5198 7

199 0

11

961

5

2 1

52 2

5

From-Denth

Ft.

199200

in.

06

172


201 2202 4202 7

205 11

207 0207 1208 8

208 10209 5210 5

220 0221 3

221 5223 91

223 11l224 9

226 9227 9228 0

232 0

287 6

290 0

Ft.

200201

in.

62

To-

202 4202 7205 11

207 0

207 1208 8208 10

209 5210 5220 0

221 3221 5

223 91223 11.

224 9226 9

227 9228 0232 0

287 6

290 0

293 0

.-

Material

Bright banded COAL........Bone coal with streaks ofblack shale.

Coaly claystone...........Fine-grained sandstone.....Interbedded claystone andsilty claystone, manyslickensides.


Limestone parting..........Bright banded COAL.........Hard black carbonaceousshale.

Soft weathered shale.......Bright banded COAL.........Claystone, occasionalstreaks and inclusions ofcoal, occasional slicken-sides.

Coaly claystone...........Hard black carbonaceousshale.



Bright banded COAL.........Soft black shale...........Interbedded claystone,silty claystone and fine-grained sandstone. Occa-sional calcite streaks andinclusions.

Medium- to coarse-grainedsandstone, "granitized".occasional coal inclu-sions.

Small cobble conglomerate,occasional inclusionscoal and sandstone.


ThicknessFt. in.

1 68

1 23

3 4

1 1

11 7

2

19

707

1 32

2 422

9½2 0

1 03

4 0

55 6

2 6

3 0

) F-65131.

)

)

) F-65130.

Remarks

a

A) F-65132.

Contact beddingangle: 290feet, 30°

From-Ft. in.

293 0

Deoth

316317321322

05116

173


328 1

328329329329

402

91

330 3332 0

332 4333 0

333 7

328 4

317321322328

51161

329329329330

02

933

To-Ft. in.

316 0

332 0332 4

333 0333 7

339 10

Material

Predominately fine-grainedsandstone with many clay-stone and silty claystonelenses.

Bony COAL..................Coaly claystone............Soft dark-gray clayey mud.Claystone, occasional coalinclusions.


Bright banded COAL.........Hard black shale parting...Bright banded COAL.........Hard black carbonaceousshale.



Coaly claystone, manyslickensides.

Claystone.................Fire clay..................Claystone.................COAL.......................Claystone.......................COAL.......................Claystone..................COAL.......................Very fine-grained sand-stone.

Fire clay..................

Interbedded claystone andsilty claystone, occasion-al streaks and inclusionsof coal, many slicken-sides.


ThicknessFt. in.23 0

1 54 6

75 7

3

8271

5½

1 94

87

6 3

1 0633

1 93

2 95

3 2

1 10

32 7

9

Remarks


No sample taken.

) F-65132.

)

No sample taken.

Do.

Do.

Contact beddingangle: 352feet, 40°.

339340341341341343343346347

101047

107

1070

340341341341343343346347350

1047

10710702

350 2

352 0

384 7

352 0

384 7

385 4

627316 0-62 -12

b

From-

Ft. in.385 4

406 8

408 1

409 7

416 10

417 7

453 5

565 0

Deoth

To-

Ft. in.

406 8

408 1

409 7

416 10

417 7

453 5

565 0

566 2

174


Material

Interbedded claystone andsilty claystone, occa-sional streaks and bandsof coal.



Interbedded claystone andsilty claystone.

Soft clayey gougelikematerial, small coal in-clusions.

Interbedded claystone andsilty claystone, (lensfine-grained sandstone 423feet 5 inches to 423 feet11 inches) (lens siltstone435 feet 2 inches to 435feet 10 inches) (lensfine-grained sandstone438 feet 11 inches to 439feet 2 inches), occasionalslickensides.

Interbedded claystone,silty claystone, and silt-stone. Some contains red-dish hematite or limonitesilt (1-foot lens of fine-grained sandstone contain-ing calcite streaks at 508feet). Grades to fine-grained sandstone 555 feet6 inches to 565 feet.

Claystone.

Thickness

Ft. in.21 4

1 5

1 6

7 3

9

35 10

111 7

1 2

Remarks


Bottom of hole.

-

Drill hole

WH-1:

294 ft. 6 in. to297 ft. 0 in.

298 ft. 10 in. to301 ft. 11 in.

615 ft. 4 in. to618 ft. 6 in.

626 ft. 11 in. to631 ft. 0 in.

635 ft. 2 in. to638 ft. 0 in.

644 ft. 6 in. to648 ft. 8 in.

691 ft. 7 in. to695 ft. 3 in.

851 ft. 8 in. to853 ft. 8 in.

855 ft. 4 in. to857 ft. 4 in.

z

oS

-Oo

0

'a.4

D-22381

D-22382

D-22383

D-22384

D-22385

D-22386

D-22387

D-22387

D-25051

D-25052

D-22819

c

0

uC

123

123

123

123

123

123

123

123

123

. 123

0o3.6

3.6

.-----

3.6

3.4

4.1

3.8

4.3

4.0

3.6

3.4

3.5

0

41.546.9

36.137.447.3

40.041.446.8

41.042.747.1

37.539.046.4

39.441.246.1

36.838.444.6

36.638.042.1

35.536.845.5

37.238.547.8

Proximat.p nprcent I Ultimate. oercent.------ --... -. .--

-o oe .0x h

45.246.953.1

40.141.752.7

45.447.053.2

46.048.052.9

43.445.153.6

46.048.153.9

45.847.755.4

50.352.157.9

42.644.154.5

40.642.152.2

.-

11.211.6

20.220.9

11.211.6

8.99.3

15.315.9

10.310.7

13.413.9

9.59.9

18.519.1

18.719.4

1 - C

TABLE 5. - Analyses of diamond-drill core samples, central part of the district

0.5.5.6

.3.3.4

.4

.4.4

.4

.4

.4

.4

.5

.5

.4

.4

.4

.4

.4

.5

.4

.5

.5

r0

5.65.36.0

5.04.86.1

5.65.46.1

5.75.46.0

5.35.06.0

5.55.35.9

5.35.15.9

5.45.25.8

5.25.06.2

5.04.86.0

'

c010

68.871.380.7

60.863.179.8

69.271.681.0

70.873.881.3

65.568.180.9

69.572.781.4

66.869.680.9

71.073.681.7

63.165.380.7

62.464.680.2

c

0

z

1.31.41.6

1.11.21.5

1.31.41.6

1.21.31.4

1.31.31.6

1.31.41.6

1.31.41.6

1.51.51.7

1.41.41.8

1.11.21.5

oC

x0

12.69.9

11.1

12.69.7

12.2

12.39.6

10.9

13.09.8

10.9

12.29.2

11.0

13.09.5

10.7

12.89.6

11.1

12.29.310.3

11.48.8

10.8

12.59.6

11.9

+'>o.

,,h 'a

0>

12,34012,80014,480

10,93011,33014,330

12,42012,86014,540

12,77013,32014,680

11,71012,17014,470

12,44013,01014,570

11,93012,42014,430

12,72013,19014,630

11,29011,68014,450

11.12011,53014,310

0

I Val N

0 +-

41 (C O

2,310

2,870

2,380

2,380

2,420

2,380

2,490

2,500

2,910+

2,410

o2,

0

C1,.H (

-k

2,380

2,910+

2,420

2,420

2,540

2,470

2,700

2,540

P-.

N

I +

2 0

-4 0.

2,590

Fusibility of ash

2,570

2,570

2,600

2,680

2,780

2,730

4.

1.45

1.36

1.33

1.40

1.36

1.45

1.36

1.33

1.40

1.36

1.39

1.37

2

1

4

C

.,

x

1 CU- *--

4-i

3-i

Cs

1.4

.5

C

1.2

2.1

1.91

DI C

1.4

.5

1.2

2.1

1.9

2.6

1.9

2.7

1.5

0

a)'a

OC( ..

4o

a4'a

0,

0h u

IU.

(U l

1 S I

5

2-i

N

Mo

oc0 --r

25

34-i

38

25

27

50

32

15

14

22

3

5

3-i

4

12

9

5

8

WH-3:

366 ft.368 ft.

.4

.4

.5

.3

.4

.4

1.43 1-i

0 in. to6 in.

2,500 2,570 1.43 2 .7

See footnotes at end of table.

----

Drill hole

WH-3 (Con.):

384 ft. 0 in. to388 ft. 6 in.

WH-4:

392 ft.395 ft.

3 in. to9 in.

419 ft. 9 in. to427 ft. 6 in.

430 ft. 2 in. to433 ft. 0 in.

434 ft. 6 in. to438 ft. 3 in.

440 ft. 3 in. to445 ft. 0 in.

461 ft. 9 in. to463 ft. 3 in.

501 ft. 8 in. to507 ft. 4 in.

510 ft. 2 in. to512 ft. 6 in.

0z

So

0aO0

D-22820

D-25130

D-25456

D-25457

D-25458

D-24784

D-25131

D-25132

D-25133

123

123

123

123

123

123

123

123

123

+r

0

o

-E0

3.6

3.5

4.3

4.0

4.4

4' 0)0 4-

0 wo> E

37.138.547.7

36.638.043.3

37.439.145.4

37.8

39.345.9

35.537.248.6

36.938.545.8

34.735.844.6

40.541.745.9

39.941.245.2

.... ;- ~ ...PIroximate. nercent I Ultimate. nercent

X 0x H.H X

c o

40.642.252.3

48.049.756.7

45.047.054.6

44.546.454.1

37.639.351.4

43.745.454.2

43.244.555.4

47.649.154.1

48.450.054.8

0-<

18.719.3

11.912.3

13.313.9

13.714.3

22.523.5

15.416.1

19.119.7

9.09.2

8.48.7

-- t

M -

TABLE 5. - Analyses of diamond-drill core samples, central part of the district (Con.)-4a.

.4

.4

.5

-4.5.5

.2

.2

.3

.2

.3

.3

.3

.3

.4

.4

.4

.5

.4

.4

.5

.3

.4

.4

q$4

.- i

0.4.4.5

-m

r_

5.1

01

4.96.0

5.35.15.8

5.45.16.0

5.14.85.6

4.64.35.7

5.24.95.9

5.14.96.1

5.65.46.0

5.65.56.0

0

,0

62.464.780.3

68.470.980.9

66.769.781.0

66.068.880.2

57.760.378.9

64.867.580.4

62.364.380.0

71.673.781.2

72.174.681.6

1.21.31.5

1.31.31.5

1.21.21.5

1.11.11.4

1.21.31.5

1.31.41.7

1.41.51.6

1.41.51.6

0

.,,z

1.21.31.6

-- . r

c

0

12.29.411.6

12.810.011.3

12.99.5

11.0

13.810.712.4

13.910.513.7

13.19.9

11.8

11.89.3

11.7

12.09.8

10.7

12.29.3

10.4

11,23011,65014,440

12,17012,610

- p

14,380

11,87012,40014,410

11,58012,06014,060

9,98010,43013,640

11,52012,00014,300

11,15011,50014,320

12,86013,24014,580

12,97013,41014,690

0

I 0'0 C g

0 +0M .4 (

,-0 h-rl ' 4

2,770

2,870

2,360

2,230

2,310

2,230

2,910+

2,310

2,310

Fusibility of ash

C4

0

2,450

2,310

4W EIo .U) +-

2,860

2,910+

2,450

2,310

2,420

2,3304.0

3.0

2.9

3.3

U-'o

,lo

-0

:1 0)T,

2,910

2,910+

2,680

2,450

2,470

2,430

2,470

2,730

1.39

1.40

1.42

1.52

1.43

1.45

1.35

1.34

U4-.

00.>-I +o

I 0$

1.39 2

0)

1-4

hC.h -.114C.

2

3

0)C

1.0

4-'

-o4

1.0

1.6

2.6

2.5

1.4

2.1

2.8

3.0

3-i

2

3

3

41

42

89

34

45

57

18

62

28

*04)0c

U

0 .CI -I t)

18

9

13

2

'00

C ,

a)

0 o

01

I . I

23

33

76

32

N

I>0C(0 C

U .C

12 45

12-i

34

27

2,360

2,360

3-i 28

15


-t .L a -ht. U

o

-I

Drill hole

WH-4 (Con.):

527 ft. 0 in. to532 ft. 9 in.

WH-5:

339 ft. 5 in. to340 ft. 10 in.

342 ft. 0 in. to348 ft. 0 in.

402 ft. 9 in. to406 ft. 7 in.

407 ft. 4 in. to408 ft. 10 in.

418 ft. 0 in. to420 ft. 6 in.

0z

0+'

0

.0

D-24785

D-25176

D-25175

D-25460

D-25461

D-25459

D-29671

D-27206

D-27207

0

-p

0

-p:300

4.0

5.1

4.0

3.5

3.6

3.8

3.7

3.4

4.0

Proxlmade,

0 +1> E

38.339.947.1

37.639.640.3

38.840.443.8

39.540.948.1

37.639.045.5

38.740.243.9

39.741.244.1

39.540.948.7

37.539.144.5

c*O 04) .0X 1N1.H U

43.245.052.9

55.858.859.7

49.851.856.2

42.544.151.9

45.046.754.5

49.451.456.1

50.252.155.9

41.743.151.3

46.848.855.5

V ....... t ....._- - -- --- _ _ _ I 11 - --- - - ----- I

14.515.1

1.51.6

7.47.8

14.515.0

13.814.3

8.18.4

6.46.7

15.416.0

11.712.1

"eren .. - u 1 I. - er-ce-ntI

k:3

u)

0.3.3.4

.3

.3

.3

1.21.31.4

.4

.4

.5

.5

.5

.6

.3

.3

.4

.4

.4

.5

.3

.4

.4

.3

.3

.4

TABLE 5. - Analyses of diamond-drill core samples, central part of the district (Con.)

o

I_

4.94.65.4

5.55.25.3

5.65.35.8

5.25.05.8

5.25.05.8

5.55.35.8

5.65.35.7

5.35.16.1

5.35.15.8

0.Q

(3

63.866.578.3

76.380.481.7

72.074.981.2

65.367.779.6

66.168.580.0

72.074.881.7

72.975.781.1

64.766.979.6

68.371.180.9

aco0

1.11.21.4

1.41.41.5

1.51.51.7

1.31.31.6

1.31.41.6

1.31.41.5

1.51.51.6

1.41.41.7

1.41.41.6

." .~

1.500

15.412.314.5

15.0

11.111.2

12.39.29.9

13.310.612.5

13.110.312.0

12.89.8

10.6

13,210.411.1

12.910.212.2

13.010.011.3

CJ

O :

C >

11,13011,59013,660

13,50014,22014,450

12,80013,33014,450

11,65012,07014,200

11,76012,20014,240

12,83013,33014,560

12,97013,46014,430

11,65012,05014,340

12,12012,62014,360

0

I 2,

2,360 F

2,310

0 N.- I ..-

coo-1 4- g.

2,380

2,050

2,360

2,310

2,360

2,360

2,340

2,470

2,470

I

.c

,f,

U) +'

2,410

2,180

2,420

2,380

2,470

2,470

2,380

2,520

2,620

2,440

2,340

2,500

2,550

2,590

2,600

2,510

2,620

2,750

I.o

af

-o aaD

P. -4

Fusibility of ash

I o

a +m

I >a, N

1.46

1.33

1.35

1.41

1.40

1.51

1.34

1.40

1.37

0)a

ua

,-

x

IOU "CI.Ui "->

3

2

2

2

2.0

.2

.7

1.7

1.9

b

m-'

C

I ma

a

aU

0

I4 O0

I C.

17

a)

I 0I '~0a

I C

U .H

WH-6:

250 ft.252 ft.

2-t

1-i

1-t

4

5-½

4

3

2

18

8

oN

roc0 0

0 C,U -rC

52

13

64

40-j

14

24

18

59

34

0 in. to0 in.

311 ft. 6 in. to318 ft. 0 in.

319 ft. 3 in. to322 ft. 9 in.

1.2

1.4123

1


Drill hole

WN. II - IE-o Luon.):

381 ft. 0 in. to383 ft. 0 in.

385 ft. 9 in. to387 ft. 2 in.

1-7:

585 ft. 3 in. to

WI

586 ft. 6 in.

to

z

3.4

0'-a

D-27208

D-27209

D-28276

D-28277

D-28278

D-28279

D-28280

D-28281

D-28282

"I0

*o-'.rl

cOC:0u

587 ft. 1 in.593 ft. 0 in.

Proximate, percent I Ultimate, percent

.4

4-'

0

3.7

25.9

3.0

3.5

3.6

3.4

2.9

3.3

3.9

0).-44

0 W

36.337.743.9

25.935.045.0

37.939.149.4

40.341.748.0

38.439.945.5

37.138.445.1

36.637.745.4

37.238.545.5

38.540.143.9

C

X oI. U

46.448.156.1

31.742.755.0

38.940.150.6

43.545.252.0

46.147.754.5

45.246.854.9

43.945.254.6

44.646.154.5

49.351.256.1

<"

13.614.2

16.522.3

20.220.8

12.713.1

11.912.4

14.314.8

16.617.1

14.915.4

8.38.7

I--

M M M

TABLE 5. - Analyses of diamond-drill core samples, central part of the district (Con.) c-0)

C

0.5.5.6

.4

.5

.6

.3

.3

.4

.3

.3

.4

.2

.3

.3

.3

.3

.4

.8

.81.0

.4

.4

.5

c

00oh-

5.35.15.9

6.34.65.9

5.04.86.1

5.45.26.0

5.35.15.8

5.25.05.9

5.14.96.0

5.35.16.0

5.35.15.6

0.0

(0

67.169.681.1

46.162.280.0

60.662.578.9

67.369.780.2

68.070.580.5

66.468.880.7

65.567.581.4

66.568.881.3

71.174.081.0

oW0.0

1.31.41.6

1.0

4-'-

1.31.7

1.01.01.3

1.11.21.4

1.11.21.3

1.21.21.4

1.41.51.8

1.51.51.8

1.11.21.3

C

x

12.29.2

10.8

29.79.1

11.8

12.910.613.3

13.210.512.0

13.510.512.1

12.69.9

11.6

10.68.29.8

11.48.8

10.4

14.010.811.8

-'0

. 0

am

0"

- -

11,98012,44014,500

8,28011,17014,370

10,81011,15014,080

11,99012,42014,300

12,09012,55014,320

11,89012,31014,440

11,65011,99014,470

11,93012,33014,570

12,53013,04014,270

I o

- o2,470I- .H a)0 .+'.

IH 0 0

2,470

2,570

2,520

2,440

2,330

2,700

2,420

2,910+

C -P

C )I 09

U) -'

2,730

2,650

2,590

2,490

2,390

2,750

2,620

Fusibility of ash

U.

3

03 .

H 0

2,860

2,750

2,750

2,590

2,520

2,840

2,730

.H

.H

Ua >P

fI (0

1.39

1.46

593 ft. 2 in. to596 ft. 10 in.

609 ft. 0 in. to611 ft. 8 in.

885 ft. 3 in. to886 ft. 6 in.

902 ft. 7 in. to904 ft. 7 in.

WH-8:

445 ft. 0 in. to450 ft. 3 in.

1.45

1.38

1.38

1.39

1.41

1.39

c

Ix

000CUX *

2

2

3

1-i

2-t

1-½

1.6

.4

2.0

2.4

2.3

2.1

2.5

2.6

1.4

C

f0

C) *

0n4

< .-

h in0a

S oo cI -'-

-o

001

0)0)

0 CIo ..

*-0)N

I -(0

C.I0 «1

15

15

13

65

35

24

18

22

53

4

3

2,520123

.2

.2

.3

2,180 2,310 1.37 2-*


,W, AnP i

Drill hole

WH-8 (Con.):

452 ft. 9 in. to457 ft. 10 in.

495 ft. 10 in. to497 ft. 6 in.

WH-9:

1671 ft. 2-1

in. to1672 ft. 0O- in.

1679 ft. 2 in. to1680 ft. 4 in.

1684 ft. 6 in. to1686 ft. 7 in.

1687 ft. 6 in. to1688 ft. 9 in.

1689 ft. 7 in. to1693 ft. 1 in.

WH-10:

1651 ft. 10 in. to1656 ft. 8 in.

1660 ft. 5 in. to1664 ft. 9 in.

0z

'-404-,

0.Q3

D-28283

D-29672

D-71977

D-71978

D-71979

D-71980

D-71981

D-74888

D-74889

-,c0

0

123

123

123

123

123

123

123

a

0

3.6

3.4

3.7

3.3

2.9

3.6

2.6

3.0

2.9

38.1

* a

0 0

38.139.646.3

38.439.747.0

37.038.442.3

39.440.846.5

39.340.547.1

36.237.646.5

38.639.645.7

38.039.245.1

37.138.243.4

....... ~ F ....Proximate. nercent I Ultimate. nercent

v 06 .0x5.X4.4L. 0

44.446.053.7

43.4

44.953.0

50.352.357.7

45.446.953.5

44.345.652.9

41.843.353.5

45.947.2

54.3

46.3

47.754.9

48.449.956.6

.l

13.914.4

14.815.4

9.09.3

11.912.3

13.513.9

18.419.1

12.913.2

12.713.1

11.611.9

4-

0.3-.3.3

.3

.3.4

4 to WI


00

5.25.05.8

5.25.05.9

0(0

0

66.368.880.4

65.567.880.1

ca0o

z4'

1.01.11.3

1.31.41.6

0

x

13.310.412.2

12.910.112.0

.H4o

0 §0 moM

O >

11,79012,24014,300

11,67012,08014,270

PiO

I a

o0 +'

r (0 4-+* a a".< , e

2,420

2,360

Fusibility of ash

t.o270

2,440'-4

0)4

amoU) 4'

2,470

2,440

-L4

I..

'1

b4

I aI- : e

2,520

2,500

0

ar,

1uI >w

1.39

1.39

r4

0)

I -I. C'., "-c

2-j

mlr4

CC

4 I0a, laO< .r_

1.8 59

20

a

af

o

a,I.o

Io cC3.~

9

3-t

-o

0 .

00

I -

I I^I3 ..

50

N

a

16-ji

10-j

14

22-q

11-

33-j

45

32-

- 14

25

12

35-j

58

35-½

ia

2

13

3

123

123

0.4.4.5

.4

.4

.5

5.35.15.9

5.35.15.8

68.270.380.9

69.371.481.0

1.21.21.4

1.21.21.4

12.29.911.3

12.210.011.3

12,16012,53014,420

12,32012,69014,410

2,210

2,150

2,520

2,470

2,630

2,570

1.39

1.39

See footnotes at end of table. '-10

Drill hole

-WH-10 (Con.):

1801 ft. 4 in. to1805 ft. 6 in.

1805 ft. 6 in. to1806 ft. 5 in.

1806 ft. 5 in. to1807 ft. 5 in.

1809 ft. 10 in. to1812 ft. 6 in.

WH-1:

1398 ft. 10 in. to1408 ft. 8 in.

1410 ft. 3 in. to1414 ft. 6 in.

1623 ft. 11 in. to1634 ft. 10 in.

WH-12:

1991 ft. 7-* in.

0

>.o0

-- 1

E-188

E-189

E-190

E-191

E-185

E-186

.-

0(.

a0

rx

2.1

-g

2.1

1.8

2.1

2.0

2.2

2.0

sFv IId.

I-

3.0

+143.3

- --00

36.337.043.3

-- -m AI 111-+ -- + -----

0

XIO*4O 0x P

U. u

47.448.556.7

"ercen'I I'll - e- ---

.0

<:

27.227.8

14.214.5

25.425.9

15.015.3

14.014.3

19.419.9

19.619.9

22.222.7

I-

TABLE 5. - Analyses of diamond-drill core samples, central part of the district (Con.) o§

U0

.3

.3

.3

c010h

0co

mu

a0

o

z4

a0

0

4

0a m

U >

'----

12,12012,37014,470

L.O

I 0a0 $

0 +,

.H m

2,840

Fusibility of ash

u.0

00c +4

H mc k4)0

-U +

2,910+

0

+300Q

'0 0$

'.4. +4

u

00. >(0 +4

- >

0 (0(

0cr

x<D0)0 l

| r-,hL-

+4

c0 H

04*'0

>0

0rIU .

11

12

32

108-)

0 C

44

50

131

22-j

+4

*-,

00 c

0

0 000)

I o

N

0

c

0 CU -H

50

11

12

32

79

38

107-i

i I

E-187

D-99652

36.537.244.0

39.340.146.7

37.037.847.2

36.337.046.2

34.034.845.0

46.447.556.0

44.745.653.3

41.442.352.8

42.143.153.8

41.742.555.0

.3

.3

.3

.3

.3

.4

.3

.3

.4

.4

.4

.4

.4

.4

.6

12,08012,33014,570

12,11012,36014,410

11,37011,62014,510

11,38011,61014,500

10,88011,11014,370

2,480

2,450

2,810

2,810

2,610

2,680

2,510

2,910+

2,910+

2,700

2,860

2,680 29-i

6

123

123

to1996 ft.

2.1 2,780

0 in.


It 6. i

Proximate, percent I Ultimate, percent Fusibility of ash

0 0 0 .. -v

o u c > o N o <z h C h cn C Cn C C A h2

o o a o a c c *. h X - 0- E E c> IDa C 0 c S O(0 -4 0 N M C Ni -C C0 C - '0 a)' . CN N + 4 a O' N 4 U 0 NW '04r

Drill h U z 0 > E -oc4 +4 +), M UM - < 3.- .- ) .-

WH-12 (Con.)i

1996 ft. 1 in. to D-99653 1 2.3 35.9 45.5 16.3 0.3 - - - -- 11,980 2,910+ -- -- -- - - 32 3-i 28-i1998 ft. 9 in. 2 - 36.7 46.6 16.7 .3 - - - -- 12,260

3 - 44.1 55.9 -- .4 - - - -- 4,710

2001 ft. 6 in. to D-99654 1 2.1 38.5 47.8 11.6 .3 - - - -- 12,760 2,910+ -- -- - - - 28 j 27-i2003 ft. 10 in. 2 - 39.4 48.7 11.9 .3 - - - -- 13,030

3 - 44.7 55.3 -- .4 - - - - 14,790

2005 ft. 9 in. to D-99655 1 2.0 33.3 39.2 25.5 .3 - - - - 10,620 2,910+ -- -- - - - 24 3 212007 ft. 9 in. 2 - 34.0 40.0 26.0 .3 - - - - 10,840

3 - 46.0 54.0 -- .5 - - - - 14,650

2034 ft. 11 in. to D-99656 1 2.3 37.6 49.4 10.7 .4 - - - -- 12,860 2,910+ --- -- - - - 64 19 452040 ft. 3 in. 2 - 38.4 50.7 10.9 .4 - - - -- 13,160

3 - 43.1 56.9 -- .4 - - - -- 14,770

2080 ft. 3 in. to D-99657 1 2.0 40.6 49.3 8.1 .6 - - - - 13,260 2,090 2,210 2,490 -- - - 118 36-i 81-i2091 ft. 1 in. 2 - 41.4 50.3 8.3 .6 - - - - 13,520

3 - 45.1 54.9 -- .6 - - - -- 14,740

1 (1) As received; (2) Moisture-free; and (3) Moisture- and ash-free.2

Ratio, silicon carbide to coal, 15:1; crushing strength in kilograms.

0


CO

Drill hole

MC-1:

111 ft. 4 in. to122 ft. 4 in.

691 ft. 4 in. to708 ft. 4 in.

709 ft. 7 in. to716 ft. 4 in.

720 ft. 10 in. to722 ft. 10 in.

730 ft. 7 in. to749 ft. 4 in.

799 ft. 6 in. to807 ft. 5 in.

817 ft. 8 in. to828 ft. 4 in.

MC-2:

393 ft. 6 in. to430 ft. 5 in.

534 ft. 11 in. to546 ft. 5 in.

944 ft. 0 in. to984 ft. 11 in.

0z

No. 8

No. 9

No. 10

0

-4

No. 118650

No. 1

No. 1

No. 14

No. 15

No. 12

No. 13

No. 14

No. 15

No. 16

0

4+r

0

+4

-.0

3

3.6

2.3

2.5

2.6

2.4

2.3

2.5

2.6

2.7

2.2

a)

40.3

t-1

40.3

41.849.7

o 0a U

40.942.450.3

- I- - - - I

15.215.8

33.534.3

11.311.6

15.415.8

9.09.2

12.212.5

14.414.8

16.316.7

18.719.3

15.115.4

Proximate. nercent I Ultimate. nercent· r----.

O3

0.3.3.4

c

o,

5.04.85.7

c0-o

U

63.966.378.7

M M -

TABLE 6. - Analyses of diamond-drill core samples, western part of the district

aCoI0

.Hz

1.11.11.3

--c0)

>.x

14.511.713.9

oC-m

Uo.0 to

o>

11,20011,62013,790

8,8209,02013,730

12,36012,68014,340

11,78012,09014,360

12,62012,93014,230

12,18012,47014,250

11,67011,97014.050

11,09011,39013.680

11,06011,37014,080

11,79012.050

14,250

Fusibility of ash

0

I oID ^a, c

-O C n

0 a. (4 4Ccom*-4-

2,210

U.0om

U) -4

2,3302,330

-4

0 h0.-'I X

P .r -P

2,540

U

.1^U

0.>.5-P'

.H>

a1x

1.45

x

Immd :

'0 <I -4h C

U^ :D

_ -

C+loCIc

0) C< - 1

'.

U

0)

O Co .0

132

204

81

75

225

95

128

443

138

491

-,

ko

0 .-

48

4

24

44

N

C>Io

m

ocU.,0 C

132

156

77

51

181

95

92

292

71

331

36

151

67

123

123

123

160


Ax "'A -

Drill hole

MC-2 (Con.)

991 ft. 5 in. to995 ft. 5 in.

1030 ft. 3 in. to1061 ft. 6 in.

1167 ft. 6 in. to1173 ft. 5 in.

1363 ft. 9 in. to1367 ft. 4 in.

P-1:

247 ft. 3 in. to251 ft. 0 in.

254 ft. 6 in. to267 ft. 8 in.

271 ft. 4 in. to277 ft. 10 in.

309 ft. 10 in. to311 ft. 10 in.

322 ft. 10 in. 50326 ft. 4 in.

o4

No. 18

4-'

0aO

No. 1

No. 17

No. 18

No. 41

No. 5

No. 2

No. 3

No. 4

No. 5

r

4-,

*00

a

0:E

2.2

-t-

2.2

2.5

2.4

2.9

2.6

3.1

3.2

3.2

1-

- 4-

> E

, ,, b-' -

0-o0a.0x4

U)l 0

IProximat-p nercnt+ I Ultimate. nprpcnt

7.88.0

12.612.8

15.215.6

11.211.4

18.318.9

24.525.2

8.99.2

11.511.9

5.96.1

t4.U)

00o-o

p. -I

TABLE 6. - Analyses of diamond-drill core samples, western part of the district (Con.)

00.0a)

U

___ _ I - -

0)a,

0

4->0o

--

3 m

12,18012,46014,300

11,65011,94014,140

12,36012,66014,300

10,97011,30013,930

9,85010,110

4--

-u

C) >

13,080

13,370

12,890

14,540

12,18012,46014,300

11,65011,94014,140

12,360

12,66014,300

10,97011,300

13,930

9,850

10,11013,510

12,49012,89014,190

12,04012,44014,120

12,87013,29014,150

Fusibility of ash

O

I a

'0 aJ

0 4- +'

I. a)41*C

-. a

o

U -',e

c Et/ -

o

Iano- p

CO

, HO

4H*il

O fO

01

a -

, )h -4) 1U

P. ^

r01

-Cl0 0I- .

>

0a u

0o0u -.

48

339

47

43

45

158

78

24

42

oa,-4

I 00a0

U I-

1

172

..

.

0a,

00

N>-.

O-.0 C

C) .

47

167

47

43

- -

-_--

--

63

2

95

76

24

42

- -

--

--

- -

- -

--

--

See footnotes at end of table.CO

)

Drill hole

P-1 (Con.):

332 ft.339 ft.

) in. to1 in.

428 ft. 10 in. to436 ft. 1 in.

MC-8:

471 ft. 7 in. to481 ft. 0 in.

481 ft. 0 in. to490 ft. 10 in.

492 ft. 4 in. to501 ft. 2-i in.

515 ft. 4 in. to523 ft. 8 in.

531 ft. 10 in. to535 ft. 6 in.

MC-9:

429 ft. 5 in. to434 ft. 3 in.

442 ft. 8 in. to444 ft. 8 in.

z

0

No. 6

No. 7

F-64479

F-64480

F-64481

F-64482

F-64483

F-33782

F-33783

123

123

123

123

123

123

123

4'

00

.-(D3.1

a)

0E

3.1

3.1

3.2

3.1

3.2

2.9

- - -Proximate. nprcent I Ultimate. Dercent

a

<u- .-

36.938.144.5

36.938.143.9

37.638.944.4

39.240.445.3

38.039.342.7

38.639.555.7

36.937.945.8

-0 0

.H 0)-- 0

46.047.555.5

47.148.656.1

47.148.655.6

47.448.854.7

50.952.757.3

30.731.444.3

43.644.954.2


r

8.99.2

16.416.9

13.914.4

12.913.3

12.112.5

10.510.8

7.88.0

28.429.1

16.817.2

P4-

U)

0.3.3.4

.3

.3

.4

.3

.4

.4

.3

.4

.4

.8.8.9

0

204.

5.14.95.7

5.25.05.8

5.25.05.7

5.35.15.7

5.35.15.5

.- I

a0-C)

66.468.680.1

67.970.180.8

68.370.680.7

70.172.280.9

71.774.180.6

aQ

0

~4'

1.11.21.4

1.21.21.4

1.21.31.5

1.31.31.5

1.21.31.4

oa0)

xo

13.210.612.4

12.510.111.6

12.910.211.7

12.510.211.5

13.210.711.6

o4-'

12,39012,80014,090

11,19011,54013,890

11,77012,16014,190

12,05012,44014,340

12,08012,47014,260

12,41012,78014,330

12,74013,17014,320

Fusibility of ash

L4.

I0 0)

a,--' e 0.

oomH w F

a

4-'

oa,<D E)O- O.4-1 g

4-.0

'0)

-o a

(0L4'4

u

0. >a 4'

m0-- >

a4..V

0)

xW Oa) 104 cP444 r-

C:

I- a

i - OI I '.cn C

't

l'

0.uk 0a)

W,00O

I ) Cl

88

87

113

111

106-2

n00

-o

o

,0I U)

oU

0 CC) .-4

17

39

Io

N>.

r1(U-.L3 *-

88

87

96

72

39

81

37

67-i

123

123

3.3

2.3

2.7

4-i

56

24

10-i 45-i

24


Drill hole

MC-9 (Con.):

446 ft. 0 in. to448 ft. 10 in.

455 ft. 8 in. to461 ft. 6 in.

476 ft. 7 in. to479 ft. 11 in.

567 ft. 5 in. to574 ft. 10 in.

0z

0

F-33784

F-33785

F-33786

F-33787

F-64484

F-64485

F-64486

0

J-

F-33784

F-33785

F-33786

F-33787

F-64484

F-64485

F-64486

F-64487

F-64488

0

44

02

0C)

MC-14:

267 ft.268 ft.

9 in. to9 in.

123

123

123

123

123

123

123

123

123

4)

0

3.0

3.1

3.2

*--

3.1

3.7

3.5

3.3

+,

40.041.244.9

38.439.546.0

40.241.347.7

40.041.343.6

36.838.045.8

38.439.645.9

33.935.242.8

38.039.444.9

38.339.646.0

--- I-----Prnximate. nercent I Ultimate, oercent

co'o0

x PW u

49.050.655.1

45.046.454.0

44.045.352.3

51.853.456.4

43.645.054.2

45.446.854.1

45.146.957.2

46.848.555.1

45.046.654.0

.0

8.08.2

13.714.1

13.013.4

5.15.3

16.417.0

13.113.6

17.317.9

11.712.1

13.413.8

hF-.

U)

4# "

TABLE 6. - Analyses of diamond-drill core samples, western part of the district (Con.)TABLE~~ 6. -nlsso imn-rl oesmls etr ato h itit(o.

c01o

-o

C:C

-0

.0F-

C)

cCo0

z

.11-;W_

l

0

Co

0S U>3)>

P.0oI

a,POU C 3

0 +4

+.- E

CI O O

0

0-cL-1

O 4O-Ck

V) 44

u,o

-P+4f4

0 .4

Fusibility of ash

Co.a,

-C >

C MO h

cc: e

to0XO 0O

h C0p a r

CTD,

-Pm0c

30

C C< H

MC-15:

184 ft. 10 in. to190 ft. 5 in.

208 ft. 7 in. to213 ft. 4 in.

214 ft. 11 in. to224 ft. 11 in.

224 ft. 11 in. to228 ft. 5 in.

0.8.8

1.0

1.31.31.5

.5

.5

.6

.8

.8

.9

.4

.5

.5

5.14.95.9

5.25.05.8

4.64.45.3

5.25.05.7

5.25.05.8

64.166.279.7

66.668.779.5

62.464.778.9

67.970.380.0

66.969.280.3

1.31.31.6

1.31.31.5

1.11.21.4

1.31.41.5

1.41.41.6

12.39.811.8

12.510.111.7

14.111.313.8

13.110.411.9

12.710.111.8

11,53011,92014,360

11,93012,31014,240

10,93011,34013,820

12,06012,50014,220

11,93012,33014,310

Co-0a).H

o

Coh0FO

C

I3.

32

50

39

86

12

67

51

120

30

Co4)

Co

o-

U0 o0h

0C) C0 ·rl

9

6

C

Mo0

N

C0

0 0

32

41

39

80

12

43

40

120

30

24

11

CaU,


Drill hole

MC-15 (Con.):

233 ft. 6 in. to236 ft. 8 in.

236 ft. 8 in. to239 ft. 11 in.

239 ft. 11 in. to243 ft. 7 in.

243 ft. 7 in. to247 ft. 0 in.

247 ft. 0 in. to248 ft. 1 in.

248 ft. 1 in. to249 ft. 10 in.

249 ft. 10 in. to252 ft. 11 in.

252 ft. 11 in. to254 ft. 8 in.

258 ft. 0 in. to260 ft. 0 in.

963 ft. 7 in. to964 ft. 10 in.

0z4-.04-.a

0.3

F-64489

F-64490

F-64491

F-64492

F-64493

F-64494

F-64495

F-64496

F-64497

F-65119

. ;-4-

0,

0+)

3.4

3.6

3.2

3.4

3.2

3.4

3.0

3.6

3.3

2.4

a

43-4

.Oo

36.4'

45.4

3840 3> g

34.335.546.8

35.136.445.4

38.439.746.5

39.040.445.5

42.043.446.7

37.338.644.8

30.931.849.5

35.737.045.2

37.238.447.7

30.331.048.5

O00o 0

x k

' u

38.940.353.2

42.243.854.6

44.245.653.5

46.748.354.5

47.949.553.3

45.947.655.2

31.532.550.5

43.244.954.8

40.742.152.3

32.133.051.5

..... - I ...Proximate. nerrentl Ultimate. oercent

-c<

23.424.2

19.119.8

14.214.7

10.911.3

6.97.1

13.413.8

34.635.7

17.518.1

18.819.5

35.236.0

0.4.4.5

.4

.4

.5

.4

.4

.5

.4

.4

.4

.4

.4

.5

.4

.4

.5

.3

.3

.4

.4

.4

.5

.3

.4

.4

:34-

U)

· ·- �

TABLE 6. - Analyses of diamond-drill core samples, western part of the district (Con.) C-m'

4.8

6.0

0

>-

4.84.56.0

4.84.65.7

5.35.15.9

5.45.25.8

5.65.45.9

5.25.05.8

4.24.06.2

4.94.75.7

5.04.86.0

4.24.06.3

C0

U

58.060.079.2

61.763.979.7

66.268.380.1

68.971.380.4

72.474.880.5

66.869.180.2

48.750.278.1

63.565.880.4

62.464.680.2

48.749.978.0

oD0-4-'

z

1.21.21.6

1.11.21.5

1.31.31.6

1.31.41.6

1.51.51.7

1.31.41.6

1.01.01.6

1.21.21.5

1.31.31.6

1.11.11.8

x0

12.29.7

12.7

12.910.112.6

12.610.211.9

13.110.411.8

13.210.811.4

12.910.311.9

11.28.8

13.7

12.59.8

11.9

12.29.411.8

10.58.713.4

o :3

o>

10,35010,72014,140

10,91011,31014,110

11,82012,21014,320

12,30012,73014,350

12,98013,41014,440

11,89012,31014,290

8,6908,960

13,930

11,23011,65014,230

11,14011,52014,300

8,6908,900

13,910

I , aa> a

0 4- CI -. (1r0l ( 1J

I + gh g I

I- 4^ 4-I

a.

4-C

oa

I -' 0.

o3

- PI 4-

I MH

I M

Ib +~

Fusibility of ash

a.

0

-'>

0)

1:

xa.)W -oI oP *hC

IlCcc-4-

IC CDI< -.

-oa.

a .

0)

0 C00'-

38

39

44

41

13

21

37

21

24

15

a0

a ..u

I .C0 C

0 -^

4

_1,

0

o .

a.-44,

n1)

-4

.3

.3

.5

See footnotes at end of table

Drill hole

MC-16:

281 ft.284 ft.

9 in. to5 in.

326 ft. 6 in. to327 ft. 6 in.

334 ft. 2 in. to336 ft. 2 in.

z

0

00-I

F-65120

F-65121

F-65122

F-65123

F-65124

F-65125

F-65126

F-65127

MC-18:

80 ft.82 ft.

131 ft.132 ft.149 ft.153 ft.

154 ft.159 ft.

1r-o

U

0 in. to5 in.

6 in. to )3 in. )9 in. to )6 in. )

4 in. to6 in.

123

123

123

123

123

123

123

123

I3

-p0

2.2

2.1

2.1

2.6

2.2

2.9

2.8

2.5

Prn-imatp. npercnt. I Irl+im-+o. nmrcn+

0 Oa

35.035.743.4

33.033.745.3

33.434.147.0

35.035.949.2

28.529.151.4

37.238.346.5

34.735.745.8

38.038.949.3

c-o 0x mX

45.646.756.6

39.740.654.7

37.638.453.0

36.137.250.8

26.927.548.6

42.944.253.5

41.042.254.2

39.040.150.7

....... - .

£.

<

17.217.6

25.225.7

26.927.5

26.326.9

42.443.4

17.017.5

21.522.1

20.521.0

m U - -.


Z3

0.4.4.5

.3

.3

.5

.5

.5

.7

.3

.3

.4

.2

.2

.4

.4

.4

.5

.3

.3

.4

.3

.3

.4

0>oo-

5.14.96.0

4.74.56.1

4.64.56.1

4.74.56.2

3.93.76.5

5.14.95.9

4.84.65.9

5.04.96.2

0

U

65.667.081.4

58.659.880.5

56.657.879.7

56.658.179.5

42.743.677.0

64.466.380.4

60.362.079.6

61.563.079.7

-I

Co

1.51.51.8

1.41.52.0

1.41.41.9

1.21.21.6

c0.a,

10.28.6

10.3

9.88.2

10.9

10.08.3

11.6

10.99.012.3

9.98.2

14.5

12.09.811.9

12.19.912.7

11.69.7

12.2

:3

-4-1

No-- :r

U >

11,66011,92014,470

10,42010,65014,330

10,12010,33014,250

10,09010,36014,170

7,5907,76013,700

11,42011,76014,260

10,75011,06014,200

11,02011,29014,300

W)

I k

10 :0 +

10 4f-'

E 0.Nr C~

COao-u u

0)CIo

0W

C -- '

| o oIO en

W.

CoI a

:3

4-'

I CS

Fusibility of ash

*H

0

o0 NI ,

u

x 0n

0.0

x

I ) 'v^i cLL-*-

01

D X

: -Ca

31

D,.,4

o

o .<Do o

0oocU *<-

28

12

24

29

9

45

62

12

84

-o

Uo

)Cro

0C .0h U

O C

3

-o

Io0

I CCO CiI .)0*'-'

25

12

24

29

9

34

42

12

72

.9

.91.6

1.11.11.3

1.01.11.4

1.11.11.5

11

20

160 ft. 0 in. to161 ft. 0 in.

168 ft. 0 in. to175 ft. 0 in.

12

See footnotes at end of table

M-M


Proximate, percent Ultimate, percent Fusibility of ash

z -. *- - > N

o - - o -zo - C a a oo C Oa a c c*. m o oh a C O O

o + a n +O 0 ( , h- . - c ° O . +' N O 0 . *O-O O h > X O X °h h lam ° ..I c *) ,--- N £ N N -X >h - - *N h E - E .E mm a- o on o o C h N h oo a a ao a * >o a *a X m c oma. oa. -. aLa aN c 00 0 oc o

Drill hole 00 a a,~aDrill hole ) a,(-o o E Z 0 > - o o ao -h - 0 oo

MC-18 (Con.):

175 ft. 7 in. to F-65128 1 2.6 34.2 35.4 27.8 0.4 4.6 54.8 1.1 11.3 9,750 -- - - - - - 93-j 25-2 68183 ft. 4-½ in. 2 -- 35.1 36.4 28.5 .4 4.4 56.3 1.1 9.3 10,010

3 -- 49.1 50.9 -- .6 6.1 78.8 1.6 12.9 14,000

193 ft. 11 in. to F-65129 1 2.9 35.8 44.1 17.2 .4 4.8 63.5 1.3 12.8 11,070 - -- -- -- - - 21-i -- 21-2196 ft. 0 in. 2 -- 36.9 45.4 17.7 .4 4.6 65.4 1.3 10.6 11,400

3 -- 44.9 55.1 -- .5 5.6 79.5 1.6 12.8 13,860

199 ft. 0 in. to F-65130 1 2.8 38.0 43.8 15.4 .3 5.2 66.1 1.4 11.6 11,750 -- - - - - - 18 -- 18200 ft. 6 in. 2 -- 39.1 45.1 15.8 .3 5.0 68.0 1.4 9.5 12,090

3 -- 46.5 53.5 -- .3 6.0 80.8 1.7 11.2 14,360

207 ft. 1 in. to F-65131 1 3.0 37.7 43.8 15.5 .4 5.0 65.6 1.3 12.2 11,620 -- -- - - - - 212 143 69224 ft. 9 in. 2 -- 38.9 45.1 16.0 .4 4.8 67.7 1.3 9.8 11,980

3 -- 46.3 53.7 -- .4 5.7 80.5 1.5 11.9 14,260

226 ft. 9 in. to )227 ft. 9 in 1 2.8 36.0 41.6 19.6 .4 5.0 62.2 1.3 11.5 11,050 -- -- ---- -- 12 - 12

328 ft. 4 in. to ) F-65132 2 - 37.0 42.9 20.1 .4 4.8 63.9 1.3 9.5 11,350333 ft in.-- 46.3 53.7 -- .5 6.0 80.0 1.7 11.8 14,220 - -- - -- -- 56 44-t 11-i

(1) As received; (2) Mositure-free, and (3) Moisture- and ash-free.Ratio, silicon carbide to coal, 15:1; crushing strength in kilograms.

q. - ·,r · -

I

189

Contracts

Core Drilling

Diamond-core drilling contact with Boyles Brothers Drilling Co.,Salt Lake City, Utah

(Drilling conducted during 1953 and 1954)

Estimatedquantity

UnitUnit price

1. Drilling and setting standpipe throughoverburden to accomodate continueddrilling:(a) 0 to 50 feet depth ....................(b) Footage over 50 feet depth.............

2. Drilling, NX core(a) From bottom of standpipe to 500 feet...(b) From 500 to 1,000 feet.................(c) From 1,000 to 1,500 feet...............(d) From 1,500 but not exceeding

2,000 feet...........................3. Reaming for NX casting4. Drilling with mud (additional to 2, a-d)5. Drilling conglomerate (additional to 2, a-d)6. Cementing7. Surveying and other delay8. Plugging holes with cement9. Discount for drilling over minimum of

3,000 to a maximum of 20,000 feetincluding the minumum, 10 percent.

150 feet $12.00150 do. 18.00

1,200900500

100500

1,0001001005

450

do. 9.00do. 11.00do. 13.50

do.do.do.do.do.

hoursfeet

16.002.501.008.005.00

17.002.00

Churn Drilling

Churn drilling contract with Penn JerseySpenard, Alaska

Drilling Co.,

(Drilling accomplished during field seasons of 1956 and 1957)

Estimated Unitquantity Unit price

1. Churn drilling and setting standpipe todepths as required (depth per hole wasnot expected to exceed 200 feet, but maximumdepth was not specifically specified).........

2. Same as above but to maximum of 2,000 feet(including the minimum).......................

3. Supply and set standpipe of not less than 3inches or more than 31 inches inside diameter(at the discretion of the Government,standpipe remained in the hole to accommodatesubsequent core drilling).....................

500 feet $12.00

1,500 do. 12.00

- do. 1.00

- - :i

190

Tractor Rental

Tractor rental contract with C. J. McMahan, Palmer, Alaska

(Work performed during field season of 1953)

Estimatedquantity

UnitUnit price

1. Rental on tractor (Caterpillar D-8 orequivalent) equipped with heavy-dutyblade and extra wide track; fullyoperated, including operator, fuel,supplies, maintenance, etc.:Minimum ofMinimum of.................................Over minimum to maximum of.................

2. Rental of carryall of not less than 6-cubic-yard capacity:Minimum of.................................Over minimum to maximum of.................

3. Transportation of tractor from Palmer, Alaskato and from such projects as directed bythe Government:Minimum of ................................Over minimum to maximum of.................

4. Transportation of carryall from Palmer,Alaska to and from such projects and atsuch times as ordered by the Government:Minimum of ................................Over minimum to maximum of.................

j

100400

580

520

520

hours $13.85do. 13.85

do. 5.00do. 5.00

do. 20.00do. 20.00

do. 20.00do. 20.00

Dragline Trenching

Dragline trenching contract with Oneco, Inc., Anchorage, Alaska

(Work performed during 1955 field season)

Estimatedquantity

Dragline excavation of trenches to a widthof 4 feet on bedrock with sidessloped to natural angle of repose:Minimum 5,000Additional to maximum of 25,000 cubic yards 20,000

UnitUnit price

cubic yard $ .60do. .45

4

Note. - Work performed with a 4-cubic-yard crawler-type machine.

U.S. GOVERNMENT PRINTING OFFICE: 1962 0-627316

bituminous coal deposits of the matanuska coalfield, … · 2010. 8. 12. · i bituminous coal...

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