historical research report · not for publication report no. tm/72/15 institute of occupational...

HISTORICAL RESEARCH REPORTResearch Report TM/72/15

1972

Pneumoconiosis Field Research: Environmental Conditions at Morrison Busty Colliery, 1969 Bradley A, Gibbon E

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Pneumoconiosis Field Research: Environmental Conditions at Morrison Busty Colliery, 1969

Bradley A, Gibbon E This document is a facsimile of an original copy of the report, which has been scanned as an image, with searchable text. Because the quality of this scanned image is determined by the clarity of the original text pages, there may be variations in the overall appearance of pages within the report. The scanning of this and the other historical reports in the Research Reports series was funded by a grant from the Wellcome Trust. The IOM’s research reports are freely available for download as PDF files from our web site: http://www.iom-world.org/research/libraryentry.php

HISTORICAL RESEARCH REPORTResearch Report TM/72/15

1972

ii Research Report TM/72/15

NOT FOR PUBLICATION Report No. TM/72/15

I N S T I T U T E O F O C C U P A T I O N A L M E D I C I N E

PNEUMOCONIOSIS FIELD RESEARCH

ENVIRONMENTAL CONDITIONS AT MORRISON BUSTY COLLIERY, 1969

by

A. Bradley and E. Gibbon.

Environmental Branch,Institute of Occupational Medicine,Roxburgh Place,Edinburgh, EH8 9SU.(Tel. 031-667 513D August, 1972

Report No. TM/72/15




by

A. Bradley and E. Gibbon

CONTENTS

SUMMARY

1. INTRODUCTION

2. MORRISON BUSTY COLLIERY

2.1 Seams worked and output

2.2 Methods of working

2.3 Ventilation and temperature

2.*f Dust suppress!on

2.5 Manpower and occupational groups

3. SAMPLING AND EVALUATION

3.1 Sampling programme

3.2 Sampling and measuring

3.3 Evaluation

*f. RESULTS

.1 Faceworkers

k.2 Non-face samples

*t.3 Relationship between return road and face concentrations

5. OBSERVATION 3 AND CONCLUSIONS

5.1 Respirable dust concentrations

5.2 Compositional analysis

5.3 Manpower

REFERENCES

TABLES 3 - 13, 1?

FIGURE 1

Report No. TM/72/15




by

A. Bradley and E.« Gibbon

SUMMARY

This report tabulates respirable dust concentrations and compositionsfor the period March 1969 - March 1970 at Morrison Busty Colliery.All dust measurements were made using the M.R.E. gravimetric sampler.

Information regarding methods of working, outputs, and manpower isalso given. The data are presented in a series of face charts.

The colliery had a coalface mean respirable dust concentration ofVy mg/m3. The mean ash content of the respirable dust was 22*2per cent and the mean quartz content 2*6 per cent (concentration0*12 mg/m3).



. ,<i .ii i i . • • I.

• . feyA. Bradley .and E. Gibbon . . .

1. INTRODUCTION ' .

This report describes environmental measurements made by thePneumoconiosis Field Research (P.F.R.) during the period March 1969 -March 1970.

The dust measurements, as previously (Bradley & Gibbon, 1971 )• were madewith the M.R.E. Gravimetric Sampler, Type 113A. Concentrations, inparticular those in the face areas, are presented in a series ofcharts with values for different sites and occupations. The chartsalso give details of mining conditions and activities.

In April 1969.* .the .sampling strategy was modified to, allow volunteersto carry instruments for measuring dust conditions at their ownplaces of work. Although a'departure from the 'random collier'method of sampling_which .has been .used since the start .of the P.F.R.dust measurements, this technique has been adopted for the increasedsampling frequency and hence precision it gives to estimates ofgroup mean concentrations and to exposures to dust of regularinstrument carriers.

This report again gives general information about the colliery, notesoccupational groups for which data are missing and continues toexamine the relationship between dust concentrations at controlsampling points in return roadways.and on faces.

2.

2. MORRISON BUSTY COLLIERY

2.1. Seams worked and output ' - ' ''

The seams worked at Morrison Busty are, in descending order,Harvey (02:321)*, Busty (02:411) and Brockwell (02:470). TheBusty seam is divided by intervening strata into two similar layerseach varying in thickness from 60 to 100 cm. Units working thetop section are indicated by reference numbers which include theletters, TQ; those working the bottom section include the letters,BQ, in the reference number.

Other seam details are given in Tables 3-13.

A summary of the seam outputs for the accounting year 1969 isgiven- in Table 1. ' "

' TABLE 1

: Seam Outputs (tons)

* ^1969 .2nd quarter

3rd quarter

4th quarter

1970

1st quarter

TOTAL

Percentage SeamOutput

Harvey

8 401

566

17 580

15 472

42 019

20

Busty

37 867

29 94t

9 989

i

20 606

98 403

48

Brockwell

12 075

17 725 .

23 732

11 806

65 338

32

Total

58 343 '

48 232

51 301

47 884

205 760

100

The decrease in output was the result of the cut in manpower during1969 of almost 30 per cent. There was no compensating increase inme chanisation.

* Seam correlation code

3.

2.2 Methods of working

All faces in.the Busty Seam were single unit, longwall. advancing.They were either hand-got by pneumatic.picks or mechanised withrapid ploughs. Most faces worked two production shifts in the 24hour cycle.

The faces in the Harvey and Brockwell'Seams were all worked by N.C.B.Scrapers. They were double unit longwall advancing faces andusually worked three production shifts in the 24 hour cycle.

Preparation work on the scraper and plough faces was done on produc-tion shifts. On the hand-got faces ripping was carried out on theproduction shifts with conveyor shifting and prop drawing takingplace on the non-production shifts in the cycle. Individual facedetails are given in Tables 3-13.

2.3» Ventilation and temperature

Details- of. ventilation and temperature are given in the face charts(Tables 3 - 13).

2.4 Dust suppression

The Busty Seam workings during the> survey were all in the Charley NorthDistrict where there had been a history" of high dust" concentrations inthe past and all faces were dry. As a consequence much effort was putinto dust suppression; in particular, two men were allocated, on erohface, to water-infusion. Also, water ampoules were, used for shot-firing, wet boring was used at all ripping lips, all conveyor transferpoints had sprays attached and hand sprays were available at roadheads (Tables 3-13).

In the Harvey and Brockwell Seams most faces were naturally wet, butwet drilling, water ampoules and conveyor transfer point sprays werestill used.

Martindale Type 'T1 dust respirators were worn by.about 20 per cent offacemen in. the Busty Seam..

2.5 Manpower and occupational groups

The total number of men employed at the Colliery in April 1970 was658. From Table 2, below, which shows the distribution of manpowerduring the current survey, and for the previous two years, it can beseen that the colliery population continued to decline in 1969.There was no significant increase in mechanisation, so the relativedistribution of manpower amongst face, elsewhere underground andsurface activities remained undisturbed.

TABLE 2

Colliery Manpower Distribution

YearEnding

196?

1968

1969

Average numberof men employed

including absentees

1 ^50

1 08k

658

Percentage of men employed

Face

kk

kk

ElsewhereUnderground

46

k2

^•

Surface

10

13

11

As has been described before (Bradley•& Gibbon, 1971) the collierypopulation was divided into occupvitional fjroupo where ncnbers hadsinilar exposures to dust.

The number and distribution of occupational groups at Morrison Bustyin 1969 was as follows:

Face Groups -30Elsewhere Underground Groups 29Surface Groups 3

Individual daily records of attendance in the various collieryoccupational groups have been maintained. These, together withoccupational group mean concentrations, give cumulative records ofexposure to dust for each member of the colliery population.

3. SAMPLING AND EVALUATION

3.1 Sampling programme

At the start of this survey an alternative to the 'random collier1

method of sampling, which had been used exclusively since the startof the research (Ashford & Smith, 1956) was introduced. In the newsystem workmen carried sampling instruments to sample their ownenvironments during their shifts and, it was considered that instru-ments, by being placed nearer the representative (volunteer carrier),would more accurately measure the dust in the environment than hadbeen possible previously. As a number of instruments could beissued simultaneously the increased sampling cover was expected toenhance the precision of the estimates of group concentrations andthe exposure of individuals who carried instruments regularly mightalso be more precisely estimated.

5.

It was difficul't at .times to have volunteers carry instruments whentheir normal occupation required them, to carry other equipment. Tocover such occupations and, indeed, any occupational group for whichthe estimates of mean concentration was likely to be inadequate orbiased-by using the/volunteer' system of.sampling, adequate 'randomcollier1 .sampling was undertaken.

The volunteer system was in operation throughout the survey and wasmade possible largely through excellent co-operation from managementand men at Morrison Busty. '

3.2 Sampling and measuring .

Each sampling day a number of volunteers was issued with M.R.E.Gravimentric Samplers which were switched on at pit bottom and keptat the respective workplaces for the duration of the shift and"switched: off oh return to pit bottom.

During the shift an investigator travelled underground and visitedeach volunteer to give advice on instrument siting, to noteactivity of the volunteer and operations in progress and to takeventilation and temperature .measurements as required.

Because of the lay-out of faces (at that time) it was difficult toorganise sampling at the control point 25 yd from the face in thereturn road and during the survey only two control samples, bothon S.18 face, were taken.

3.3 Evaluation , '

Mass concentrations expressed as mg/m were obtained from theweights of the filter deposits (after the application of correctionsfor moisture content of filters) and the volumes of air sampled.

After 'evaluation at the colliery, filters were sent to the Instituteof Occupational" Medicine' for compositional analyses of the filterdeposits (Harrison, 1971)«

k. .RESULTS - ' , . . ' ' -• •\ , *. ' . • ' ' " ' '

4;1 Faceworkers ' '• •

Tables 3-13 are face summary charts describing faces and methodsof working, giving-details of seams and adjacent strata. Meanconcentrations of ash,'quartz and respirable dust obtained arearranged by occupational groups within face sites. Figure 1 showsthe location of the face sites at Morrison Busty.

.1.1 T.Q.2.'Face. Top-Section Busty Seam (Table 3).' The meanrespirable concentration of the eleven samples taken on this facewas 9*5 mg/m3 which was much higher than the previous survey (mean6*2 mg/m3).

.1.2 B.Q.6 Face. Bottom Section Busty Seam (Table *f). Only fivesamples were obtained, two on filling and three on preparationshifts, during a period when the face was being prepared for fullproduction.

6.

4.1.3 B.Q.27 Face. Bottom Section Busty Seam (Table 5). Eightsamples on this face gave the relatively high mean concentrationof 10-8 mg/m3. .

4.1.4 B.Q.26 Face. Bottom Section Busty Seam (Table 6).Eighteen samples were taken and gave a mean concentration of8'6 mg/m3.

4.1.5 B.Q.24 Face. Bottom Section Busty Seam (Table ?).. Thisface worked through an old pillar left by room and pillar working.As a result the roadways were already made and only the digger groupoperated. This reduced level of face activity was possiblyreflected in the mean concentration for eleven sampling shifts of5*0 mg/m3, the lowest face concentration recorded in the Busty Seam.

4.1.6 B.Q.25 Face. Bottom Section Busty Seam (Tables 8a and 8b).This face opened in April 1969 as a hand-filled face, but after amonth it was equipped with a plough and was worked in this fashionuntil it closed at the end of September 19&9. The change fromhandfilling to ploughing appeared effectively to halve the dustconcentration from 12*1 to 6*1 mg/m3. .

4.1.7 B.Q.5 Face., Bottom Section Busty Seam (Table 9). Althoughdust concentrations (mean 6*9 mg/m3) were lower than on most otherfaces in the Busty Seam, much of the dust was due to intakepollution which persisted, despite efforts by the colliery dustsuppression officer.

4.1.8 N9 Harvey Seam (Table 10). Because of the wet conditi9nson this face the face dust level (mean 2*5 mg/m3) was, as expected,low.

An extra make of water closed the face in May 1969*

4.1.9 N10 Face. Harvey Seam (Table 11). N10 Face was naturallywet throughout the survey and the mean concentration was relativelylow at 3*8 mg/m3.

4.1.10 N13 Face. Harvey Seam (Table 12). N13 was a dry face butdust levels (mean 2*7 mg/m3) were, nevertheless, also low. It isconsidered that the method of coal production (scraper-box) used onthis face assists in keeping dust concentrations in check.

4.1.11 S18 Face.' Brockwell Seam (Table 13). Although conditionson this face were naturally wet, dust concentrations were slightlyhigher (mean 4*1 mg/m3) and occasionally much higher than expected.

4.1.12 Preparation Shifts. Most of the preparation at the collierywas done during the production shift but there were, however, somepperations which could be completed only on preparation shifts whencoal was not being produced.

7.

Fifty-three samples in all were taken on such shifts in the Bustyand Harvey Seams and these are summarised in Table 14 below. NoBrockwell Seam results are shown as 318 Pace, the only face in theseam at the time, had no clear preparation, shift.

, TABLE 14

Preparation shift samples

1 "Respirable Dust Concentration (mg/m )

• Seam •

Busty

Harvey. . . . . -

All

at Site

- !• • • I1 i . 2 .I 4

. 2.9' (6)

1-2(6)

2-0(12)

i

2-8(1)

2.8(1)

i

_ t-r

(11)

1-9(9)

2-7(20)

6

5-2(3)

5 -2(3)

7

2-5(8)

2.4(9)

2-4(17)

All

3-0(25)

2-3(28)

2-6(53)

( ) denotes no. of samples

The mean concentration on preparation shifts was 2«6 mg/n(Table 17) similar to the 2«5 mg/m recorded previously (Bradley& Gibbon, 1971), but the point of most significance was possiblythat the highest concentrations occurred in the return advancedheadings (site 6) on the'Harvey Seam faces, in spite of thenaturally damp conditions existing in that seam.

4«1.1'5 Composition of Face Samples. There were minor variationsfrom seam to seam in the composition of samples, but overall, ashand quartz in ash contents of face samples (22«2 and 11«6 per centrespectively) were very similar to the corresponding values fromprevious analyses (liable 17). The mean concentrations of theseminerals, 1'04 mg/m" of ash and 0«12 mg/m of quartz, representedmarginal increases over concentrations given for 1968, but wereentirely duo to the corresponding increase in respirable dustconcentration over the same period.

8.

4.2 . Non-face samples

4.2.1 Development in Coal. Table 15 below summarises the twentyseven samples taken in coal developments.

TABLE 15

Development in Coal

Seam

OccupationO.G.S.N.

Mean Resp. Dust Cone.mg/m3

Ash Cone, mg/m

Quartz Cone, mg/m

Busty

Diggers Dev.F191

6-4(10)6-5*

1-36

0-23

Harvey

Diggers Dev.F191

4-5(9)6-1

0'96

0*1?

Brockwell

Diggers Dev.F191

6-2(8)6-4

1-33

0-24

All

5'7(2?)6-2

1-21

0-21

( ) denotes no. of samples* denotes standard deviation

The high ash concentrations recorded (3*80 mg/m ) in the Busty SeamB.Q.26 Development during the previous survey (Bradley& Gibbon, 1971 )werenot repeated either in the present Busty Seam developments or onB.Q.26 face during coal filling.

4.2.2 Stone Drifting. No stone drifting took place during thissurvey.

9.

4.2.3 Elsewhere Underground (Table 16). -.Details of the elsewhereunderground concentrations, mean, 2*9 mg/m are recorded in Table 16,

TABLE'16

Elsewhere Underground Concentrations

I

OGSN Occupation

HARVEY SEAM

E1 1 LoadersE20 Belt PatrolmenE54 Stonemen (out bye)E63 HaulageE?0 General Workers

E

BUSTY SEAM

E1 2 LoadersE21 Belt PatrolmenE53 Stonemen (out bye)E64 Haulage£69 General Workers

BROCKWELL SEAM

E13 LoadersE22 Belt Patrolmen 'E10' Storiemen (outbye)E?1 General Workers

ALL SEAMS

F60 Shotf irersF111 .Timber LeadersE28 Salvage "E29 . StonedustersE31 PipemenE34 MasonsE?3 Steel CheckersE?6 Deputies

No. ofSamples

31212

•114474

2131

1612 -1 .1

• 22

MeanConcentration

mg/m3

2-42-03-11-21-2

2-42-75-82'06-k

5-k0-62-83-5

2«81-12-82-96-83-15-10-6

4,2.4 Surface. The surface samples gave a mean concentration of0*7 mg/mJI

4.3 Relationship between return road and face concentrations

Only two samples were taken at the control point. Any estimate ofthe control point to face ratio based on so little information,must be regarded as unreliable.

10.

5. OBSERVATIONS AND CONCLUSIONS

During the period almost all occupation groups at l orrison Bustywere sampled, the main effort being directed to the face groups oncoal-getting shifts. Those groups which were open but unsampledhad been sampled during earlier surveys.

The principal observations from Tables 3 - 16 and this summary,Table 17 are as follows:

5.1 Respirable dust concentrations

The face mean concentration for coal-getting operation derived from390 sampling shifts was 5*1 mg/m3, the maximum value for any facebeing the 12*1 mg/m3 on B.Q.25 face in the Busty Seam.

There was an overall increase in mean concentration from 3*8 mg/min 1968 to *f*7 mg/m^ in the present survey.

5 . 2 Compositional analysis . . . . .

Although there were minor differences between seams regarding ashcontent, (see Table 17) varying between 18 per cent in the Brockwellseam and 27 per cent in the Harvey, the most striking difference wasbetween the 11 per cent ash in hand-filling .operations and the25 per cent during power-loading in the Busty Seam. Elsewhereunderground the mean ash content was .29 per cent. -.:'

The mean quartz content for' the colliery was fairly low^ 2*6 percent in sample, giving a mean quartz concentration .of' 0*12 mg/m3.Calcium and magnesium carbonate contents were low, except inelsewhere underground samples (possibly the effect of roadwaystone dusting). Iron content of samples was steady throughout atabout 9 per cent. , . ,

5.3 Manpower • • • • . , . • •

With the run-down in manpower over the previous two years, and' theconcentration of production into a few areas (mainly in the Harveyand Busty seams) of the colliery it was necessary to review thestructure of elsewhere underground occupational grouping. As; aresult, all 29 elsewhere groups have been closed and replaced bythe 5 new groups listed below. - .

E79 Conveying (including stonedusters, pipemen) ))

E80 Haulage and General workers )

E81 Stonemen (outbye) { All seams:^ All districts

E82 Tradesmen (outbye and surface) and other ^officials I

E83 Deputies and Overmen .

(a) Single Unit

Tl

o

(b) Double Unit; ventilated through road at face end.

... .IT.; - 7

\v8

2 i*— —^ 1

4 ->i _ _ _ _ _ _ _ _ _ _ _n j~ -

/\.

01 1

[c) Double Unit; ventilated through mi

Ti5~\ b

i

1NX

8ii

9 i

Site Location

0 Intake roadway

1 Intake ripping

2. Intake Advanced heading

3 Intake stable

4 Face

47

/•— s

I9

d r

T

*\

I

0

i ,

4 ~>

oad.

_3 1 1 «i

— y 4 >1Ii

'

Site Location

5 Return stable

6 Return Advanced heading

7 Return ripping

8 Control position (23m)

9 Return roadway

6 "

7

i8

9i

f6

8

9

FIGURE 1. Location of Face Sites

FIGURE 1.

Seam

TopBusty

W fi T5IN t\J . J3 .

CoalRankCode

301

%Carbon

88

FaceStarting

Date

July1968

FaceFinishing

Date

• April1969

TABLE 3

FAGS SUMMARY CHART Charley Noth District T Q.2 FACE

Type of Face: Single unit advancing longwall

Length:

Shift Cycle

l£)4m Height: 0»91m

: Two production, one preparation*

1

Roof: Si Its tone

Seain: Coal

Floor: Argillaceous seatearth

Average Ventilation Quantity: 2*6m-Vs

Temperatures: 17°C dry, Rel. Humidity: 84$

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHE&D

Hand filled

Holman compressed airdrilling machine,pneumatic picks

¥et drillingWater ampoules

3 «66 x 2«44marched girders

FACE

Hand filled (digging)

Pneumatic picks

.Short hole infusion

¥ood props, l*83m corrugated steel bars, wood chocks with Hecorelease .

RHTURN ROADHEAD

Hand filled

Eolman compressed airdrilling machine,pneumatic picks

¥et drillingWater ampoules

2-74 x 2«13marched girders

REMARKS

)

SITE

Occupation

O.G.S.N.

Mean Resp. DustConcentration forOccupation rag/up

Mean Resp. DustConcentration forSite mg/m^

Ash

Composition Gor/c3

1

Face Beltmen

F.56

2»7*(1)

2-7(1)-

0»42mg/nx |

by !Quartz i

Site Cone, i 0-03mg/a3

IP

Face StonemenF.48

2-9(1)

—2-9(1)

—

0-75

0-06

4

Diggers

F.63

10-2(9)3-6

Timber leadersF.lll

10-0(1)

10-2do)3-3

1«19

0-10

4P

Pullers

F.35

4.4(1)

4.4(1)-

0'99

0-08

i

7

Face Stonemen

F.48

3-9(1)

3-9(1)

1*01

0;08

8

ControlPosition

*2»7 Mean Respirable Dust Concentration(l) No. of Samples- Standard Deviation

P = Preparation Shift

TABLE 3

TABLE k

FACE SUMMARY CHARTCharley North District Bg6_FACE

Seam

Busty02: 11

N.C.B.GoalRankCode

301 a

Carbon%

88

FaceStartingDate

October1970

FaceFinishingDate


Length: 120m Height: 0'91m

Shift Cycle: One production shift per day

Roof: Siltstone

Seam:


Average Ventilation Quantity: 2*70 m /s

Temperature: 17*0 C '

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

Hand filled

Holman C.A.drilling machinePneumatic pick

Wet drillingWater ampoules

3*66m x 2*Mfmarched girders

FACE


Pneumatic picks

Short hole infusion

Dowty props, 1*82m steel bars,Wood chocks

RETURN ROADHEAD

Hand filled

Holman C.A.drilling machinepneumatic pick


Arched girders

REMARKS

Face worked intermittently

from October 1969

/

SITE

Occupation

O.G.S.N.

Mean esp. DustConcentration forOccupation mg/m3

Mean Resp. DustConcentration forSite mg/m3

AshCone.

Composition mg/m3bySite Quartz

Cone.mg/m3

1P

Face Stonemen

F*t8

3'2 *(1)

—

3*2(1)

—

0*83

0-07

<t

Diggers

F63

8*0(2)3-5

8«o(2)3-5

0«53

0-06

7P

Diggers

F63

if 2(1)

-

FaceStonemen

Fk&

0-8(1)

-

2*5(2)2»*f

0- 6

O-O^f

8

ControlPosition

*For footnotes, see Table 3

TABLE k

Seam

Busty02:411

N.C.B.CoalRankCode

301 a

«g7°Carbon

88

PaceStarting

Date

February1969

PaceFinishing

Date

June1969

TABLE 5

FACE SUMMARY CHART

Charley North District B.Q.27 PACE

Type of Pace:

Length:

Shift Cycle:

Single unit longwall advancing

35 m Height: 0-91 m

1 Production

Roof: Siltstone

Seam: Coal


Average Ventilation Quantity: 2«3 n?/s

Temperatures: 18°C

SITE

Method of Working

Machine Details

Dust _Suppression

Supports

SITE

Occupation

O.G.S.N.

Mean Resp. DustConcentration for0 c cupat i on mg/nr

Mean Resp. DustConcentration forSite mg/m^

AshComposition Cone.

by mg/cK_- Site Quartz

Cone.mg/m5

INTAKE ROADHEAD

Hand filled

Holman compressed air drillingmachine

Pneumatic pick

¥et drilling"Water ampoules

3-66 m x 2-44 mArch girders

PACE


Pneumatic picks

Short hole infusion

Wood props, 1*82 m corrugated steel bars,wood chocks with Meco release

i !1P

Face Stonemen

F48

1-3 *(2)1-1

1.3*(2)1-1

0-34

0.03

4

Diggers

P63

10-6(7)2-8

10«6(7)2-8

1-09

0*09

4P

Pullers

F35

1-0(2)0-7

1-0(2)0-7

0*23

0«02

RETURN ROADHEAD

Hand filled

Holman compressed air drillingmachine

Pneumatic pick


Arch girders

7

PaceStonemenF48

11-9(D

11-9(1)

3.09

0-25

7P

FaceStonemenP48

1-4(2)0-6

1«4(2)0-6

0-36

0«03

REMARKS

i8

ControlPosition :

.

For footnotes, see Table 3 TABLE 5

TABLE 6

FACE SUMMARY CHART Charley North District 3.Q.26 FACj

Seam

Busty02:411

N.C.B.CoalRankCode

301a

%Carbon

88

FaceStartingDate

November1968

FaceFinishingDate

Type of Face:

Length: 55m

Shift Cycle:

iSingle unit longwall advancing

Height: O90m

2 Production, 1 Preparation

Roof: Siltstone

Seam: Coal


Average Ventilation Quantity: 2«0m5/s

Temperatures : 18°C

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

Hand filled

Holman compressed air drilling machine,pneumatic pick

Wet drilling, water ampoules

3 °6 6m x 2° 44m arch girders

FACE


I7'neumatic picks

Short hole infusion

Dowty props, l*82m corrugated steel bars,wood chocks with Heco release .

RETURN ROADHEAD

Hand filled

Holman compressed air drilling machine,Pneumatic picks


Arch girders

REMARKS

SITE

Occupation

O.G-.S.N.

Mean Resp. DustConcentration forOccupation mg/m3

Mean Resp. DustConcentration forSite mg/nP*

AshComposition ^OI)C4

mg/nP

Quartzsite Cone.

mg/nP

1

Face Stonemen

F.48

2-7*(1)

-

Face Beltmen

P. 56

2-9(1)

-2-8(2)

L 0*1

0-58

0-04

IP

Face Stonemen

F.48

1*1(1)

-1-1(1)

-

0-29

0-02

4

Diggers

F.63

9-2(15)2-7

9-2(15)2-7

0-95

0*07

4P

Pullers BeltExtenders

F.35 F.85

3-4 0-6(1) (1)- i _

2-0(2)2-0

0-35

0-03

7

Face Stonemen

F.48

11-7(1)

11-7(1)

3-04

0-25

7P

Face Stonemen

F.48

3-9(1)

Borers

F.128

0-9(1)

2-4(2)2-1

0-51

0-05

8

Position


TABLE 6

TABLE 7

FACE SUMMARY CHART 5th West District BQ2*f FACE

Seam

Busty02: 11

N C BCoalRankCode

301 a

Carbon%

88

FaceStartingDate

May1969

FaceFinishing

Date

July1969


Length: 70m Height: 0*91m

Shift Cycle: 2 Production; 1 Preparation

.Roof: Siltstone

Seam: Coal


Average Ventilation Quantity: 2*0

Temperature: 18 C

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

Only., cleaning and resettingof existing roadway

Holman C.A. drillingmachinePneumatic pick


3°66 x 2'Mf m• arched girders

FACE


Pneumatic picks

Short-hole infusion.

Dowty props, 1'82m corrugated steel bars,wood chocks

RETURN ROADHEAD

Only enlarging existing, roadway"

Holman C.A. drilling machinePneumatic pick


Arched girders

REMARKS

'

SITE

OccupationO.G.S.N.

Mean Resp. DustConcentration forOccupation / 3r mg/m

Mean Resp. DustConcentration forSite / 3mg/m

AshCone.


Cone.mg/m3

If

DiggersF12

5'0 *(11)1»9

5*0 *(11)1*9

0'3k

O'Ok

8

ControlPosition

*For footnotes see Table 3

TABLE 7

TABLE 8(a)

FACE SUMMARY CHART Charley North District Bj§2jp_FACE

Seam

Busty02:V11

N O B

CoalHankCode

301 a

%Carbon

88

FaceStartingDate

April1969

FaceFinishingDate

May1969

Type of Face: Single unit longwall advancing

Length: 75m Height O90m

Shift Cycle: 2 Production, 1 Preparation

Eoof: Siltstone

Seam: Coal



Temperatures: 19 C

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

Hand filled

Holman compressed air drillingmachine, pneumatic pick


3* 66m x 2*Mfm arch girders

FACE


Pneumatic picks

Short hole infusion

Hydraulic props, 1*82 m bars, wood chocks

RETURN ROADHEAD

Hand filled


Wet drilling, water : ampoules

Arch girders :

REMARKS

SITE

Occupation

O.G.S.N.

Mean Resp. DustConcentration forOccupation mg/n)3


AshCone.


Cone.mg/m3

1

Face Beltmen

F56

12-6 *(1)

—

Loaders

E12

3-6(1)

—

8'1 *(2)6'k

1-96

0*1?

.

k

Diggers

F63

13*2CO0-5

13*2CO0*5

1*36

0*11

7

Face Stonemen

F48

15*9(1)

—

15-9(D-

V13

0-33

8

ControlPosition

* For footnotes see Table 3

TABLE 8(a)

TABLE 8(b)

FACE SUMMARY CHART Charley North District B.Q.25 FACE

Seam

Busty02:V11

N C.BCoalRankCode

301 a

yCarbon

88

FaceStartingDate

May1969

FaceFinishingDate

September1969

Type of Face: Single unit longwall advancing

Length: 75m Height: 0*90m


Roof: Siltstone

Seam: Coal


Average Ventilation Quantity: 2'0 m3/s

Temperatures: 19°C

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

Hand filled



3* 66m x 2*Mtm arch girders

FACE

Power loaded

97 kW Reischaken plough

Hydraulic props, Dowty props

RETURN ROADHEAD

Hand filled

Holman compressed airdrilling machine,pneumatic pick

Wet drilling, Water ampoules

Arch girders

REMARKS

I

SITE

Occupation

O.G.S.N.

Mean esp. DustConcentration forOccupation / 3r mg/m

Mean Resp. DustConcentration forSite . 3mg/m

AshCone.


Cone.mg/m3

1

FaceStonemen

Fif8

if 5 *(6)3-6

FaceBeltmenF56

1-8(2)0-9

3*8 *(8)3-3

0'89

0-0?

1P

FaceStonemen

F48

7'5(1)

-

7-5(1)-

1-95

0-16

k

Shotfirers

F60

1-2(1)

-

Face Team

F181

6-6(32)3-9

Face Fitters

F190 ,

6*1(6)3-7

Deputies

E76

5-1(2)0-3

6-3(VI)3-8

1-52

0*15

kP

Face Team

F181

if- 8(V)0-9

V»8W0-9

T21

0*12

7

Face Stonemen

F48

8-0(4)2-7

8*0W2-7

2' 08

0-17

8

Control 'Position

;

!

* For footnotes, see Table 3

TABLE 8(b)

TABLE 9

FACE SUMMARY CHART

Seam

Busty02:411

N C BCoalRankCode

301 a

Carbon%

88

FaceStartingDate

January1970

FaceFinishingDate


Length: 95m Height: O'?8m

Shift Cycle: 2 Production shifts

Charley North District BQ5 FACE

Roof: Siltstone

Seam: coal


Average Ventilation Quantity: 2*8

I Temperature : 1 9°C

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

Hand filled

Holman drilling machine

Wet drilling, short holeinfusion.., hand spray,water ampoules

3 '66 x 2* Mtm arches

FACE

Power loaded

Plough

Seven mist sprays along A.F.C.

Westphalia self -advancing supports

IRETURN ROADHEAD

Hand filledfc

Holman drilling machine

Wet drilling,! waterinfusion , sprays onmini- conveyor',i

/3'66m x 2'kkm\ arches

REMARKS;

i

SITE

Occupation

O.G.S.N.

Mean Resp. DustConcentration forOccupation / 3mg/m


AshComposition Cone.

by mg/m3Site

QuartzCone.mg/m3

1

Face Stonemen

F48

9.9 *

(5)1-4

9.9 *

(5)vif

2'57

0-21

if

TimberLeadersF111

k'6(1)

-

FaceTeamF181

6-6(26)2-8

FaceFittersF190

2*k(2)1-3

6-3(29)3-3

1-57

0-15

kP ,

TimberLeadersF111

4-5(1)

-

FaceTeamF181

2'7(1)

-

3-6(2)

—

0'90

0'08

7

FaceStonemenFkS

8-4(2)2-9

8-4(2)2'9

2*18

0'18

7P

' FaceStonemenF48

3'8(D-

3-8(1)-

0-99

0-08j

8

ControlPosition

i

.


TABLE 9

TABLE 10

FACE SUMMARY CHART N9 FACE

Seam

Harvey02:321

N C BCoalRankCode

301 b

c/0

86

FaceStartingDate

February1968

FaceFinishingDate

May1969

Type of Face: Double unit longwall Advancing

Length: 1?8m Height: 0'56m


Roof: Sandstone

Seam: Coal


Average Ventilation Quantity: m3/s

Temperatures: 17°C

SITE

Method of V/orking

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

Hand filled

Holman drilling machine,pneumatic picks


3* 66m x 2'kkm arch girders

FACE

Power loaded

N.C.B. scraper box75 kW hoist

Sprays at face transfer point

Hydraulic chocks, Dobson propsand crowns

RETURN

MOTHER GATE

Hand filled

ROADHEAD

LEFT TAILGATE

Atlas Copco shovel



2'7*fm x 2* 30march girders

3'66m x 2'M*march girders

REMARKS

SITE

Occupation

O.G.S.N.

Mean Resp. DustConcentration forOccupation / 3

Mean Resp. DustConcentration for

mg/nr

AshCone .


Cone.mg/m3

1

FaceBeltmenF55

2-2*(2)1-8

Borers

F128

0-9(1)

—

Loaders

E11

0»9(1)

-

1*5*(Vl.i*

0'27

0-03

2

- FaceStonemenF1*t8

3'6(3)1-3

3-6(3)1-3

1*01

0*17

2P

FaceStonemen

F1*f8

2-8(1)

-

2-8(1)-

0'79

0*13

*t

FaceStonemenF1*f8

3-6(2)0*9

ScraperAttendants

Fl6*t

1-8(13)1'0

2-1(15)1'0

0-62

0-08

*fP

ScraperAttendants

Fl6 f

1-7(3)o«9

1-7(3)0-9

0-50

0-07

6

FaceStonemenF1W

6-0 .(1)

-

6'0(1)-

1*69

0-28

6P

FaceStonemen

F1*t8

1*4(1)

-

1-*f(1)

-

0«39

0-06

7

FaceStonemenF148

V6(2)V3

TimberLeadersF111

1-6(1)

-

3-6(3)3-5

0-97

0«13

7P

FaceStonemen

F1*f8

1'2( f)0*2

1'2CO0-2

0-3

0'06

8

ControlPosition


TABLE 10

TABLE 11

FACE SUMMARY CHART N10 FACE

Seam

Harvey02:321

N.C.B.CoalRankCode

301 b

%Carbon ,j

86

FaceStartingDate

September1969

FaceFinishingDate

Type of Face: Double unit longwall advancing

Length: 200m Height: 0'56m

Shift Cycle: Production, 1 Preparation

Roof: Sandstone

Seam: Coal



Temperatures: 19 C Rel. Humidity

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

LEFT TAIL GATE

Atlas Copco shovel



3* 66m x 2'kkm arch girders

FACE

Power loaded


Sprays at face transfer points

Hydraulic chocks, Dobson propsand crowns

RETURN ROADHEAD

MAIN GATE RIGHT TAIL GATE

Hand filled



3» 66m x 2'¥fmarch girders

2'7ifm x 2'30march girders

REMARKS

SITE

Occupation

O.G.S.N.

Mean Resp. DustConcentration forOccupation / 3

ing/m"


AshCone,


Cone.mg/m3

1

FaceBeltmenF55

6-0*(3)7-5

FaceStonemenF148

2-4(4)2-6

3-9*(7)5-1

0-92

0-13

1P

FaceStonemenF148

1-6(3)0-5

Stonemen(outbye)E54

9-6(1)

—

1-4(4)0-5

0-61

0-09

2

FaceBeltmenF55

3-0(1)

—3-0(1)_

0-53

0-05

4

Shot-firersF60

1-5(1)

—

ScraperAtts.F164

3-3(24)1-6

FaceFittersF190

2-8(6)1-5

Deputies

E76

4-8(3)1-7

3'3(34)1-6

0-89

0-11

4P

FaceStonemenF148

0-6(1)-

ScraperAtts.F164

5'5(1)-.

3-0(2)3-6

0-87

0*13

6

FaceStonemenF148

5-4(2)0-9

5-4'(2)0-9

1-52

0-25

7

FaceStonemenF148

4-9(15)2-2

4-9(15)2-2

1-38

0-23

7P

FaceStonemenF148

3-4(4)1-9

"*5 • il.

C *+}1-9

0-96

0-16

8

ControlPosition

i


TABLE 11

TABLE 12

FACE SUMMARY CHART NI3..FACE

Seam

Harvey02 321

N C BCoalRankCode

301 b

#Carbon

86

FaceStartingDate

March1969

j

FaceFinishingDate

Type of Face: Double unit longwall Advancing

Length: 205m Height: 0-6lm


Roof: Sands tone

Seam: Coal


Average Ventilation Quantity

Temperatures: 21 °C Rel.

L.H.S.•R.H.S .

Humidity

1-6 3/V5"/8

** :

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

CENTRE GATE

Hand filled

Holman drillingmachine ,pneumatic picks

Wet drilling,Water ampoules

2'7km x 2'30march girders

FACE

Power loaded


Sprays at face transfer point

Hydraulic chocks, Dobson props and crowns

RETURN ROADHEAD

LEFT TAIL .GATE

Atlas Copco shovel

RIGHT TAIL GATE

Hand filled



3*66m x 2'kkmarch girders

2*7 m x 2' 30march girders

REMARKS

>

SITE

Occupation

O.G.S.N.

Mean Resp. DustConcentration forOccupation / 3mg/m

Mean Resp. DustConcentration forSite , 3mg/m

AshCone,

Composition mg/m^bySite Quartz

Cone .mg/m^

1

FaceBelt-menF55

2*7*(3)1-7

FaceStone-menF148

2-5(8)1-1

2-5*(11)1-3

0-63

0'09

1P

FaceStone-menF1*t8

0*8(2)O'O

0*8(2)0-0

0-22

0-0*f

k

Shot-firers

F6o

2-7(1) '

—

ScraperAttnds.

Fl6*t

2-5(23)1-2

FaceFitters

F190

1-if(6)1-1.

OtherOfficials

E66

1-1(1)

—

Deputies

E76

k'k(V3-7

2-5(35)1-7

0-68

0-09

ifP

Shot-firers

F60

1-0(1)

—

ScraperAttnds .

F164

1-8(2)1-0

Deputies

E76

1-2(1)

—

1-4COo«8

0-36

0-05

6

FaceStone-menF1*t8

5-6(1)

—

5-6(1)M

1-57

0-26

6P

FaceStone-menF148

7'2(2)0-9

7-2(2)0-9

2-02

0-33

7

FaceBelt-menF55

3'6(2)0'3

FaceStone-menF1*f8

3-0(9)1-1

3-1(11)1-1

0-81

0-12

7P

FaceStone- 'menF1 8

3'3(1)

—

3-3(1)^

0-93

0-15

8

ControlPosition

For footnotes, see Table 3 TABLE 12

TABLE 13

FACE SUMMARY CHART S18 FACE

Seam

Brockwell02: V?0

N.C.B.CoalRankCode

301 a

%Carbon

90

FaceStartingDate

May1969

FaceFinishingDate

Type of Face: Double unit advancing longwall

Length: 190m. Height: 0'66m

Shift cycle: 3 Production shifts

Roof: Siltstone

Seam:



Temperature: 19 C

SITE

Method of Working

Machine Details

Dust Suppression

Supports

INTAKE ROADHEAD

LEFT TAILGATE

Fired, loaded

Atlas Copco ShovelHolman drillPneumatic Pick

Wet drillingWater ampoule

3* 66m x 2*M+m arches

FACE

Power loaded

N.C.B. Scraper Box75 kW Hoist

Face naturally wet

Hydraulic chocksDowty props and crowns

RETURN ROADHEADS

CENTRE GATE

Hand shovels

Holman drillPneumatic pick


3-66 x 2'Mfmarches

RIGHT HAND TAILGATE

Hand shovels

Holman drillPneumatic pick


2-7 x 2-30marches

REMARKS

SITE

Occupation

O.G.S.N.

Mean Resp. DustConcentration forOccupation / 3y mg/m


AshCone.


Cone.mg/m3

1

FaceStonemen

F53

k'6*(28)2'0

FaceBeltmenF57

2-5(1)

-

FaceFittersF190

1-6(1)

-

V4 *(30)2-0

0-75

0-08

k

FaceBeltmenF57

1-7(1)-

Borers

F128

2-6(2)1'1

ScraperAttendsF186

V3(49)1-8

FaceFittersF190

2-9(3)0-5

Deputies

E76

3-1(3)0-8

if 0(58)1-9

0'72

0'07

6

FaceBeltmenF57

4*1(3)1-8

4-1(3)1-8

0-75

0-07

7

FaceStonemen

F53

4' 0(D-

FaceBeltmenF57

2-8(6)1-5

FaceFittersF190

5'6(1)

-

1

Loaders

E13

6-k(2)0*6

3-9do)2-0

0'69

0-06

8 :

ControlPosition

7-8(2)3-3

0*90

0-09


TABLE 13

TABLE 17

Summary of Dust Concentrations and Composition by Face and General Environment

Class of Environment

Mechanised Filling

Hand Filling

Preparation

Development in Coal

COALFACE

Stone Drifting

Elsewhere Underground

Surface

Location

Seam District

Busty CharleyNorth

Face

B.Q.5

B.Q.25

Seam Mean

Harvey N. 9

N. 10

N. 13

Seam Mean

Brockwell S. 18

Seam Mean

All Seams Mean

Busty CharleyNorth

5th West

T.Q.2

B.Q.6

B.Q.27

B.Q.26

B.Q.25

B.Q.24

Seam Mean

All Seams Mean

ALL Seams

All Seams

All Seams

All Seams

All Seams

MeanResp.DustCone,

mg/m

6-9 (36)

6-1 (53)6'4 (89)2-5 (26)3-8 (59)2-7 (58)3-1 (143)4-1 (101)4*1 (101)

4-3 (333)9-5 (11)8-0 (2)10-8 (8)8-6 (18)

12*1 (7)5-0 (11)8-8 (57)8-8 (57)2-6 (53)

5'7 (27)4-7 (470)

3-8 +(0)

2-9 (62)

0-7 (24)

Con.Pos.Face

Ratio

1-90

Mean

Ash

mg/m

1-73

1-48

1'570-68T02

0-72

0'830-730-731-01

1-150-551-331-06

2'00

0'341-01

1-01

0*681-21

1'04

0-87"1"-

0-830-11

Cone.

Quartz

mg/m

0-16

0'14

0-15

0'09

0-14

0-10

0-11

0'07

0-070*12

0*090*06

0-11

0-09

0-170-04o«090*09

0*080-21

0-12

0«09+

-

0-07

0*01

Ashin

Sample

24»6

26*9

17*8

23-5

11-511-526' 1

21 '3

22-2

23-5+'-

28-716-4

Quartz

9. if

13'8

10-1

11-5

9-09-012-2

17-411-610*5*-

8-38-4

Com]

Kaolin

31 '0

16-5

27'5

23-7

33-7

33-7

22-7

25-724-944« 5+

-

31*0

17*6

josition of

Mica

17-7

16'2

12-715-6

11-8

11-8

13-525'0

15-4

12-6+

-

9.90-2

Ash

Ca.Mg.Garbs.

9-6

6-3

3-86-8

7'7

7'79. if

3-87-0

3*9+

-

16-5

IronCarb,

7*9

9-9

8-7

9-0

if. if

4-48-67-6

8-77-o+

-7-1

+ Values for 1968 Figures in brackets denote the number of samples

TABLE 17

R E F E R E N C E S

Ashford, J.R. & Smith, P.H. (1956). The allocation of samplingeffort in environmental surveys. N.C.B. Report No. SO 370/ER/28.

Bradley, A. & Gibbon, E.(l97l). Environmental tfonditions atMorrison Busty Colliery 1968, Institute of Occupational Medicine.Report No. TM/71/18.

Harrison, G.E. (1971). Analysis of gravimetric filters taken atMorrison Busty Colliery. Institute of Occupational Medicine.File BP31121.

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