293_3x08x2006100444am
DESCRIPTION
telferTRANSCRIPT
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1THE TELFER GOLD MINE
INTRODUCTION
Marco Zolezzi General Manager
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2UNDERGROUND
SHAFT SYSTEM Sinking and Lining completed 28 Feb 05 Cable equipping completed 23 Mar 05 Winder building, winder and sky shaft installation commenced
UNDERGROUND FIXED CAPITAL PLANT Civil contract awarded Mechanical and electrical bids received and under evaluation
From Telfer To: Direct km
Nifty 70
Woodie Woodie 110
Gregory Range 110
Marble Bar 270
Newman 320
Port Hedland 450
Perth 1,300
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3Telfer Gold Mine Licence to Operate
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4Telfer Safety LTIFR of 3.9. (0.98 injuries per 100 employees) Our approach to safety is forward looking and
involves engaging with the workforce (Target Zero) Safety Behaviour Observations (SBOs) one per week for
all trained personnel. Close out of investigations after three weeks 100%. Close out of corrective actions after four weeks 100%. Six Target Zero working groups operational with employee
participation. Ensuring contractor participation in our safety programs
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5Environmental Overview
Environmental Management at Telfer Gold Mine includes; The Port Hedland Copper concentrate facility The Port Hedland to Telfer Gas Pipeline Telfer Gold Mine itself
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6Environmental Overview
Port Hedland Copper Concentrate Facility Includes an Environmental Management Plan (EMP) that addresses mostly dust,
waste water and clean up post loading Recent upgrades to improve environment include internal dust extraction
upgrades, installation of man cooler fans, and industrial strength roller doors
PH to Telfer Gas Pipeline Operated and environmentally managed by Gasnet Transmission services (WA) Fibre optic cable installation, via Telstra, scheduled to commence mid July 2006
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7Telfer Gold Mine Environmental Mgt Mine lease conditions current. Recent DoIR audit highlighted ARD management as
major issue and sighted R&D work associated with rehabilitation as positive Site wide Environmental Risk Assessment conducted October 2005. All issues
identified are actioned through each departments EMP (1 implemented, and 4 pending). Level III and IV risk has capital plan
Environmental Non-compliances
No Cat III or IV incidents for 2005/2006
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8Environment Programs New 6 year plus Class II landfill commissioned New waste transfer and recycling area fully operational; recyclables to
date includes 20 m3 of Al, 447 m3 of cardboard and 120 m3 of scrap steel (last two months of data). 15% of revenues donated to charity. WA govt. vision is for zero waste 2020
Dingo Management Plan nominated for DoIR Golden Gecko award Wildlife Hospital and partnership with Kanyana - nominated for DoIR
Golden Gecko award
Mesa landform for closure (possible Banksia award)
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9Native Title/Community
Mine Site & Infrastructure Corridor Agreements with Native Title Groups
MOU & Community Benefits Agreement in place with Traditional Owners - Martu
Community Programs with Martu Agreements Implemented, WIP Training and Employment Opportunities
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Native Title / Community
Training commenced annual programs Employment skills register Contracting opportunities for existing business Business Development setting up new business Cultural Awareness presented by Martu Community programs with Town of Port Hedland ,
Government & Others
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11
Telfer Today
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Planned PitMAIN DOME
Planned PitWEST DOME
1 km
Telfer Tomorrow
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The Telfer Re-Development Open pit mine to produce 13-15 million tonnes of ore/annum Underground mine to produce 4 million tonnes of ore/annum Twin train concentrator to treat 17-19 million tonnes of
ore/annum to produce gold dore and copper/gold concentrate. 120Mw Gas fired power station with gas pipeline from Port
Hedland Ancillary services & utilities to support the mining &
treatment plant operations Upgrades to Telfer access road and village accommodation
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Telfer Gold Mine Statistics
Ore Reserve* of 17 million ounces of gold
Ore Resource* of 26 million ounces of gold
23 year operating life based on ore reserve
Average annual production
770,000 ounces of gold
27,800 tonnes of copper
Operating workforce 1100 people
* Resources & Reserves as at 30 June 2005
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Telfer Project ProgressOpen Pit Mine- Operating Commenced stripping Operations in May 2003 Supplying ore to the plant at 21Mtpa 05/06 Planning 15Mtpa 06/07Underground Mine - Developing Delays in commissioning the underground mine Expect 4 Mtpa rate by 4th Quarter 2006/07Concentrator In Production First ore train commissioned in Nov 2004 Second ore train commissioned in Feb 2005 Both trains exceeded design capacity in less than a month
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Successes Challenges Open Pit Mine exceeds
Feasibility Targets Concentrator exceeds
Nameplate Capacity Concentrate Marketability
Arsenic and Cobaltite Gravity Gold Recovery
(25%)
Supergene Reserve Grade (Minimal Impact on LOM) Delayed Underground Mine Skill Shortage and Staff Turnover
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Human Resources Key Issues Experienced operations management team in place New employees recruited job ready Federal Australian Workplace Agreements implemented for
employees Use of contractors in specialist areas Turnover 2005/06 ~30% (Prior year ~40%) Recruitment of Skilled Employees Focus Group improve roster and reviewed remuneration
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THE TELFER GOLD MINE
Key Statistics2005/06
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Open Pit - 2005/06 ProductionActual Feasibility
Ore Mined Mtn 22.1 15.5
Dump Leach Mined Mtn 0.7 1.1
Waste Mined Mtn 23.9 30.2
Total Material Mined Mtn 46.7 46.8
LOM Strip Ratio 2.87
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Ore Processing Full Year 2005/06Actual Feasibility
Open Pit Ore Milled Mtn 20.2 15.5
Underground Ore Milled Mtn 0.2 3.1
Total Ore Milled Mtn 20.4 18.6
Dump Leach Ore Treated Mtn 0.0 1.3
Total Ore Treated Mtn 20.4 19.9
Milled Grade Cu % 0.28 0.34
Gold Recovery % 81.0 92.0
Milled Grade Au g/t 1.18 1.81
Copper Recovery % 66.6 82.7
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Ore Processing Full Year 2005/06 Gold Production
Actual Feasibility
Open Pit koz 640 682
Underground koz 10 316
Total Concentrator koz 650 998
Dump Leach koz 0.0 19
Total Gold Produced koz 650 1,017
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Ore Processing Full Year 2005/06 Copper Production
Actual Feasibility
Open Pit Ktn 37.8 36.7
Underground Ktn 0.6 19.8
Total Copper Produced Ktn 38.4 56.5
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1TELFER ORE PROCESSING
Mike Nelson Ore Processing Manager
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2Ore Processing - Introduction Concentrator originally designed to process 17-19Mtpa
Two trains of processing 15 Hectare site (15 times the footprint of the old Telfer
concentrator) Conventional Processing technology used
Crushing SAG and Ball mill with recycle crushing (SABC) Flotation circuit, (150 m3 tank cells) Leaching circuit for pyrite concentrate Copper concentrate and bullion produced on site
Copper concentrate trucked to Port Hedland for shipping. Single circular tailings dam
490 Hectare area Sufficient for Life of Mine (with wall lifts throughout life)
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3Ore Processing
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4
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5Ore Processing - Overview Continued to maintain a high environmental and safety
performance.
Milled tonnage continues to exceed feasibility FY05 throughput of 8.8Mt at an operating time of 75.5% FY06 throughput of 20.6Mt at an operating time of 90.9% FY07 forecasts similar throughputs with continuing improvement
in operating times allowing for harder underground ore.
Pyrite leaching circuit commissioned Feb 2006, and first major campaign on sequential ore from underground and Open Pit planned for August 2006.
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6Ore Processing - Overview Overall recovery of gold and copper lower than feasibility,
influenced by; Supergene ore grade Ore treatment mode Copper concentrate grade requirements
Gravity Recovery remains lower than feasibility Intensive Leach Reactor successfully commissioned Grind size in upper ores contributing to finer gold production
which is less efficiently recovered in primary gravity units Initial trials on changing feed source to primary gravity units
shows promise
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7Ore Processing - Overview Reduction of Arsenic in concentrate shows good progress
FY06Q4 showed a reduction to 28% of high-grade Arsenic concentrate
Increased proportion of underground ore in FY07 will assist in increasing the proportion of concentrate with low Arsenic.
Two Concentrates pilot trials complete and successful. Was usedto treat one train in Q4 and significantly contributed to the lower amount of concentrate at high Arsenic levels.
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8Ore Processing Cost Distribution FY06
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FY06 Costs = $6.36/tonne milled
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9Metallurgy Focus FY07 Pyrite Leaching
Underground and lower Open Pit sulphidic ores to be treated in sequential mode from August 2006.
Sequential flotation: A separate copper concentrate and pyrite concentrate produced Pyrite concentrate is leached and recovered gold is shipped as dore Expect 10-15% of the gold in these ores to be recovered via pyrite leach.
Leaching circuit optimisation Cyanide consumption will be a key economic driver of the leach circuit
Have involved external experts including CSIRO to assist in optimisation of the circuit leach chemistry.
Circuit has been proven in terms of throughput capacity earlier this year.
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Metallurgy Focus FY07 Recovery
Gold Recoveries have been lower than feasibility Ore treatment route
Four main treatment routes bulk float, copper only, pyrite only, sequential Majority of ore treated in FY06 has been upper Open Pit ore (supergene),
planned to be treated as a bulk float ore. Copper-only mode has been used predominantly due to higher concentrate
grade targets. Use of cyanide to depress pyrite in this ore, and a specific copper
collector to float off copper minerals As a result, gold and copper recovery (associated with pyrite) have
suffered. FY07 will see an improved recovery of gold and copper due to normalisation of
production reducing the amount of copper only treatment.
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Metallurgy Focus FY07
Gravity Gold Target gold to gravity has been 40%. But achieving closer to 25%.
Gold distribution to flotation has been much higher than feasibility 75% of gold in concentrate is liberated of which 25% is gravity
recoverable.
Oxidised and softer Supergene ores have led to overgrinding, and slimes generation
Reducing potential to recover to gravity (gold too fine) Over 80% of the gravity recoverable gold in concentrate is flattened
and is less effectively recovered in Knelson/Falcon centrifugal concentrators.
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Metallurgy Focus FY07
Gravity Gold Actions taken to date
Intensive Leach Reactor (ILR) installed to leach gold room tails Prevents this stream entering final concentrate ILR available to leach other high grade low mass streams
Mobile gravity units (two 30 Knelson concentrators) Trial done on final concentrate stream
Lower recoveries than expected (flat gold escaping?)
Primary gravity unit performance (Falcon concentrators in grinding) Improved availability (wear issues have been significant) Ordered fourth unit for each train to increase recovery
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Metallurgy Focus FY07 Gravity Gold
Actions still to take Trial mobile Knelsons on other flotation streams
Primary gravity recovery Install and commission fourth Falcon per train (H1, FY0607) Trial cyclone underflow to these units rather than cyclone feed as
designed and current configuration. This currently underway on one train Results are encouraging May result in utilising cyclone underflow as feed to gravity units
rather than cyclone feed.
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Metallurgy Focus FY07 Gravity Gold
Actions still to take Further optimisation to minimise overgrinding of ore and gold particles.
Coarsen grind in SAG mill (only by varying level of grinding media)
Coarsen grind in ball mill (by reducing amount of grinding media or increasing size of grinding media)
Potential to decrease Open Pit powder factors on softer ores
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QUESTIONS & ANSWERS
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May 2006All rights reserved Newcrest Mining Ltd
TELFER OPEN PIT
Steve Batman Open Pit Manager
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May 2006All rights reserved Newcrest Mining Ltd
Open Pit Operations - Introduction
2 pits: Main Dome & West Dome Commenced mining in the Main Dome Main Dome dimensions 3km x 1.5km x 650m Open pit has mined 136 Mt since May 2003 Current depth 180m
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May 2006All rights reserved Newcrest Mining Ltd
T e l f e r P r o j e c t J u n e 2 0 0 3 2
M i n i n g S t a g e s F i r s t 4 Y e a r sM I N E S C H E D U L I N G
Open Pit Mine Schedule
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May 2006All rights reserved Newcrest Mining Ltd
Total Tonnes by Mining Stage
0.0
1.0
2.0
3.0
4.0
5.0
6.0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
Production Month
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Stage 4Stage 3Stage 2.3Stage 2.2Stage 2.1Stage 2Stage 1
Mine Scheduling
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May 2006All rights reserved Newcrest Mining Ltd
Open Pit Fleet
Newcrest owned fleet workforce of 160 operators
Contract Maintenance (Westrac & Leibherr)
19 Caterpillar 793 Haul trucks, 4 more to be delivered
Liebherr - 2 995 Excavators and 1 996 Face Shovel, 2nd 996 ordered as an Excavator
3 Driltech D75K Blasthole drills and 1 Pantera 1500 on site, A New D55SP (Single Pass) to be delivered.
Moving towards a longer term hire agreement on the small fleet.
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May 2006All rights reserved Newcrest Mining Ltd
Strategy to Minimize Dilution and Ore Loss
Mining method utilised has changed from initial bulk mining to selective mining at high production rates
Planning Allowing maximum mining width through areas to prevent tight spots that force poor technique
Digging direction From Hanging wall to Footwall
Digging direction Mining squarely across the boundary
Size of Block mark out and orientation for machine size
Correct Block number entered in Dispatch
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May 2006All rights reserved Newcrest Mining Ltd
M10 exposed
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May 2006All rights reserved Newcrest Mining Ltd
Digging direction
ORE
WASTE
CONTACT
Rill angle will approximate ore\waste contact
CORRECT DIGGING DIRECTION
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May 2006All rights reserved Newcrest Mining Ltd
Digging direction
ORE
WASTE
INCORRECT DIGGING DIRECTION
RILL SLOPE
ORE LOSS
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May 2006All rights reserved Newcrest Mining Ltd
Example - Focus for Operators
Dozing direction and timing Dozing should always be done north-south Dozer and digger operators need to communicate with each
other the best time for floor cleanup i.e. if ore block already faced up, dont push waste into it.
Sheeting Ore zones should not be sheeted Sheeting can be carried out, but only after consultation with a
geologist
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May 2006All rights reserved Newcrest Mining Ltd
Dilution Due to Blasting
Blast MovementIssue : Blast Movement monitoring to assist dilution reduction.
Actions : To measure and define the direction of Blasting Movements inproduction blasting.
All blasting is semi-parallel to strike of Ore body, unless approved by Mining Manager.
Looking at blast vector indicators (BVIs) for a large trial.
Supplied from JKTech. System has shown 1-3 m of horizontal movement. More senders on order
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May 2006All rights reserved Newcrest Mining Ltd
BMT Unit
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May 2006All rights reserved Newcrest Mining Ltd
Production Costs Open Pit2005/06 Telfer Open Pit Costs
$2.10 per tonne mined
0.0%
5.0%
10.0%
15.0%
20.0%
25.0%
30.0%
Westrac Liebherr Diesel Labour Tyres BulkExplosives
GET Lubes
Cost Center
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May 2006All rights reserved Newcrest Mining Ltd
The Bottom Line
To continue to feed the mill at 45-50 ktpd at a strip ratio of 2.87:1 ( Stage 3) requires a Mining Rate of 175 to 194 ktpd
Transitioning into Stage 4 next July requires 225 to 250 ktpd.
Improvements are being implemented in multiple areas and additional equipment is being delivered (4 Trucks Currently)
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May 2006All rights reserved Newcrest Mining Ltd
Operating Improvements
Mining Production Rates Quick Shift Change has been well accepted and improved truck
utilisation. Additional Capacity to be Added
4 x 793 Cat Haul Trucks 1 x 996 Excavator
Dump Optimization Using results of Dump Solver for operating costs savings
Refuelling Near Pit Refuelling system purchased. Reduces delays.
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May 2006All rights reserved Newcrest Mining Ltd
QUESTIONS & ANSWERS
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1Telfer Underground
Grant Davidson Chief Underground Transition Manager
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2Shaft, to 1126m @ 7m dia loading stn at 1100m,
6.5 Mtpa Two exhaust shafts
4.5m dia, centrifugal fans
Gyrator crusher; 54x74 Metso
Truck loading chutes; 2 commd, 6 in total
Main Pumps; 3 Apex, total installed
capacity of 135 l/sLevel interval 25m
X-cut at 14m centres
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3Exhaust system
complete (red)
Crusher has been
commissioned
Shaft requires a sheave shaft change out for statutory compliance,
18 days shutdown
Undercut
Mining undercut and second level
2nd Level
2 of 6 ore passes with truck chutes
are being commissioned
(yellow)
East
West
ShaftCooled intake airway & hoisting
VR10Exhaust
VR 11Exhaust
Decommissioned
0 50 100
Scale, metres
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4Comparison with RidgewayTelfer Deeps Characteristics: Differences with Ridgeway:
Immediate production ramp up post commissioning of hoisting system
Undercut extracted prior to commissioning ore handling system
Longer strike length; 50+ cross cuts 20 cross cuts
High grade in reefs with surrounding stockworks,39Mtonnes, Au 2.7g/t, Cu 0.50%
Porphyry; at the end of Feasibility, 32Mtonnes, Au 2.7g/t, Cu 0.76%
Starting depth; undercut at 850m Undercut at 500m
Open pit interaction No open pit interaction
LHD/truck haulage/hoisting/conveyor LHD/LHD/conveyor
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5Changes since Oct 2003 analyst visit
New portal proposed from the western side of the open pit did not proceed New decline to surface completed; decoupled UG/Operations
Infrastructure/access to the SLC established on the east; Retains potential of mineralisation to the west of the SLC
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6Mining Contractor Change Over
Mining targets were not being met under previous contract arrangement
Alliance agreement established with Byrnecut (BCM) September 2005 Offers Newcrest greater flexibility Confident that operating targets can be achieved in 06/07
Results so far; Integrated scheduling & co-ordination, improved development
performance Reduced workforce turn over
Underground site numbers; 330 NCM 40, BCM 231, Other Contractors 9, Remaining capital works 50
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7 Good quality services & infrastructure Development capability is in place and will accelerate with
new infrastructure taking shape Ore handling system now commissioned Operations well planned
Detailed design & scheduling Deployment schedules are targeting critical areas with good
compliance to target
SLC undercut production commenced in March 2006
Sound Fundamentals are in Place
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Undercut Level
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Undercut Level Development Planned to Sept 2006
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2nd Mining Level
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2nd Mining Level Development Planned to Sept 2006
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Production OutlookWith the ore handling system fully functional, post completion of the sheave shaft replacement, planning is focussed on achieving a 4 Million tonnes per annum rate by March 2007.
Critical drivers are: 1. Development Advance
2. Caving initiation
3. SLC recovery
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Production Outlook2. Caving Initiation. Empirical models indicated initiation of caving
by Feb 07. The undercut area is 30% larger than the estimated threshold Localised geotechnical data from the undercut implies potential for
reduced hydraulic radius A range of monitoring systems are in place or planned Current micro-seismic system, effective for cave column height of 350m Planned Extension of the monitoring system
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Production Outlook3. SLC Recovery. Estimation processes similar to Ridgeway Initially estimated recovery curves used, that require validation by
planned marker trials Build on knowledge gained at Ridgeway
Marker trial program established July 2002 at Ridgeway; 70 plus sets of results; provides insight into primary, secondary, tertiary recovery
Telfers Marker Trial Program: Facilitate an assessment of recovery (timing and location); Better understanding of ore flow to drawpoints, resource recovery, and hence
ability to predict/calibrate recovery life of mine Ability to design and implement strategies to improve recovery
Tools for drill and blast optimisation, and draw control management
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QUESTIONS & ANSWERS
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3 August 2006 All rights reserved Newcrest Mining Ltd
TELFER - TECHNICAL SERVICES
Review and Update on the Mineral Resource
August 2006
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3 August 2006 All rights reserved Newcrest Mining Ltd
Telfer Geology
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3 August 2006 All rights reserved Newcrest Mining Ltd
Telfer
Nifty
Montana
East Trotmans
Munro
Iron Hill
Minyari
Weenoo Granites
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3 August 2006 All rights reserved Newcrest Mining Ltd
Paterson Province Regional Setting
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3 August 2006 All rights reserved Newcrest Mining Ltd
Telfer Main Dome Aerial View ~1974
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3 August 2006 All rights reserved Newcrest Mining Ltd
Stratigraphy of the Yeneena Supergroup
WilkieQuartzite
Kaliranu Beds(InformalName) 9000m
8000m
7000m
6000m
5000m
4000m
2000m
3000m
1000m
0m
PuntapuntaFormation
MaluQuartzite
IsdellFormation
BroadhurstFormation
Coolbro Sandstone
UPP
ER Y
ENEE
NA
SUB
-GR
OU
PLO
WER
YEN
EEN
ASU
B-G
RO
UP
RUDALLMETAMORPHIC COMPLEX
Telfer Fm
DOLOMITELIMESTONE
MUDSTONE
SANDSTONE
CONGLOMERATE
TELFERGOLDDEPOSITS
NIFTY (Cu)
KINTYRE (U)
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3 August 2006 All rights reserved Newcrest Mining Ltd
TELFER PROJECTRESOURCE POTENTIAL
Looking NNE
TELFER PROJECTRESOURCE POTENTIAL
Looking NNE
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3 August 2006 All rights reserved Newcrest Mining Ltd
Telfer Dome Mineralisation
Main Dome E-Reefs & MVR
I30 Monocline (SLC)
West Dome E-ReefsMVR
LLU
Telfer Dome Fold Axis
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3 August 2006 All rights reserved Newcrest Mining Ltd
Monocline Pit Shell in Relation to Drilling
Main Dome M-Reef Resource Potential
Monocline Pit Shell Dictated by Drilling
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3 August 2006 All rights reserved Newcrest Mining Ltd
Telfer Resource Interpretation
Review of dominant mineralisation styles incorporating new (June 2006) gold interpretation
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3 August 2006 All rights reserved Newcrest Mining Ltd Reef
Stockwork OreBoundary OreWasteReef
Stockwork OreBoundary OreWaste
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3 August 2006 All rights reserved Newcrest Mining Ltd
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3 August 2006 All rights reserved Newcrest Mining Ltd
Telfer Supergene Mineralisation
Oxide and Transition zones more complicated mineralogically thanexpected
Complex suite of sulphide minerals including arsenic species Mining practices in place to manage arsenic grade presented to mill Upper, more complicated remnant areas of the open pit mined to date
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3 August 2006 All rights reserved Newcrest Mining Ltd
New Geological Interpretation Key findings
Increased geological data has improved confidence in interpretation
Mining to date has been through mineralisation styles dominantly parallel to stratigraphy with localised domains of sub-horizontal enrichment
June 06 interpretation identifies broader sub-horizontal high gold grade mineralisation styles evident in areas
since beginning of May 06 potential for northerly extension to known mineralisation beyond Monocline Pit
shell
Existing Monocline Pit shell is constrained by extents of existing resource definition drilling
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3 August 2006 All rights reserved Newcrest Mining Ltd
Telfer Open Pit Feasibility & June 2006 Au Interpretation
TELFER OPEN PITCross-section looking North
Dominant stratigraphic control parallel to E-reefs
Consistent broad domains of stockwork mineralisation as well as reef development
EOM April 06 wireframe
0.8 g/t Gold Contours
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3 August 2006 All rights reserved Newcrest Mining Ltd
Telfer Main Dome Pit June 2006
5344mRL 5344mRL
Dominant stratigraphic control parallel to E-reefs
Consistent broad domains of stockwork mineralisation as well as reef development
TELFER OPEN PITCross-section looking North
0.8 g/t Gold Contours
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3 August 2006 All rights reserved Newcrest Mining Ltd
Arsenic and Cobalt Mineral Associations
AsSCoS Ratios
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3 August 2006 All rights reserved Newcrest Mining Ltd
Testwork Results
Arsenic and cobalt are primarily hosted by Cobaltite, Gersdorffite, and inclusions within Pyrite
Arsenic and Cobaltite in concentrate deports to the 53 to 25 micron size fraction confirmed by Met studies and is the basis of the 2-Con project
Arsenic and cobalt-bearing mineral associations in:Main Dome Pit (upper ore zones - transition) are primarily hosted by CobaltiteMain Dome Pit (lower ore zones - primary) are primarily hosted by PyriteTelfer Deeps underground are primarily hosted by PyriteWest Dome Pit are primarily hosted by Pyrite
Plant testwork results show arsenic hosted by pyrite (primary mineralisation) can be suppressed in Sequential Float treatment mode
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3 August 2006 All rights reserved Newcrest Mining Ltd
Grade Control Processes
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3 August 2006 All rights reserved Newcrest Mining Ltd
Grade Control Processes
Grade Control process improvements in 2006
24/7 supervision of ore extraction since March 2006
RC Grade Control 100% of all samples since early 2006
Validation of interpretation ongoing with RC data testing boundaries and grades of marginal (Boundary Ore) domains
QAQC of data and coverage of ore mining 24 hours
Selective removal of HW waste from reefs (M10/12) under direct control of geologist
Ore Loss, dilution and bench height studies completed
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3 August 2006 All rights reserved Newcrest Mining Ltd
Resource / Reserve Statement
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3 August 2006 All rights reserved Newcrest Mining Ltd
MAIN DOME
TELFER OPEN PITTELFER OPEN PIT
TELFER DEEPSTELFER DEEPSTELFER DEEPS
Over 1 million samples from ~20,000 drillholes were utilised to produce the Open Pit resource estimate
Over 33,000 samples from 200 drillholes were utilised to produce the Telfer Deeps resource estimate
WEST DOME
MAIN DOME
TELFER OPEN PITTELFER OPEN PIT
TELFER DEEPSTELFER DEEPSTELFER DEEPS
Over 1 million samples from ~20,000 drillholes were utilised to produce the Open Pit resource estimate
Over 33,000 samples from 200 drillholes were utilised to produce the Telfer Deeps resource estimate
WEST DOME
59819.90.131.4444Resource (2005)
Cu (Kt)
Au (Moz)
Cu (%)Au (g/t)
Tonnes (Mt)
59819.90.131.4444Resource (2005)
Cu (Kt)
Au (Moz)
Cu (%)Au (g/t)
Tonnes (Mt)
3085.30.522.859Resource (2005)
Cu (Kt)
Au (Moz)
Cu (%)Au (g/t)
Tonnes (Mt)
3085.30.522.859Resource (2005)
Cu (Kt)
Au (Moz)
Cu (%)Au (g/t)
Tonnes (Mt)
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3 August 2006 All rights reserved Newcrest Mining Ltd
MAIN DOME
TELFER OPEN PIT Proved and Probable ReserveTELFER OPEN PIT Proved and Probable Reserve
TELFER DEEPS
WEST DOME
TELFER DEEPS Probable ReserveTELFER DEEPS Probable Reserve
MAIN DOME
TELFER OPEN PIT Proved and Probable ReserveTELFER OPEN PIT Proved and Probable Reserve
TELFER DEEPS
WEST DOME
TELFER DEEPS Probable ReserveTELFER DEEPS Probable Reserve
46113.90.141.4320Open Pit Total
Cu (Kt)
Au (Moz)
Cu (%)Au (g/t)Tonnes (Mt)
46113.90.141.4320Open Pit Total
Cu (Kt)
Au (Moz)
Cu (%)Au (g/t)Tonnes (Mt)
2003.40.52.739Telfer Deeps
Cu (Kt)
Au (Moz)Cu (%)Au (g/t)
Tonnes (Mt)
2003.40.52.739Telfer Deeps
Cu (Kt)
Au (Moz)Cu (%)Au (g/t)
Tonnes (Mt)
(2005)
(2005)
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3 August 2006 All rights reserved Newcrest Mining Ltd
QUESTIONS & ANSWERS
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Telfer Gold Mine Fact Sheet Location: Great Sandy Desert, 480km ESE, Port Hedland
1900km North of Perth by road Geological Setting: Gold and copper mineralisation hosted within reef and
stockwork domains in Proterozoic sediments, weakly metamorphosed, structurally deformed by folding and faulting, and intruded by granites.
(As at 30 June 2005) Resource:
Open Pit Measured 150 Mt @ 1.3 g/t Au, 0.15% Cu Indicated 200 Mt @ 1.6g/t Au, 0.13% Cu Inferred 94 Mt @ 1.1 g/t Au, 0.12% Cu Underground Indicated 48 Mt @ 2.9 g/t Au, 0.54% Cu Inferred 11 Mt @ 2.4 g/t Au, 0.44% Cu
Proved Reserve: Open Pit - Main Dome 110 Mt @ 1.4 g/t Au, 0.18% Cu West Dome 37 Mt @ 1.0 g/t Au, 0.08% Cu
Probable Reserve: Open Pit - Main Dome 120 Mt @ 1.5 g/t Au, 0.15% Cu West Dome 49 Mt @ 1.1 g/t Au, 0.08% Cu Underground 39 Mt @ 2.7 g/t Au, 0.50% Cu
Total Production Gold Copper Average Production Gold Copper
18.4 Moz 640 kt 770,000 ounces pa 27,800 tonne pa
Mine Life: Open pit 23 years Underground 10 years
Capex Stage 1 & 2: A$1,472 million Pre Development Capex: A$170 million Total Throughput: 20-22Mtpa on softer ore
17Mtpa on hard ore including Telfer Deeps 4Mtpa
Process Facilities: - 1370 x 1880mm gyratory crusher (nominal P80 120mm) - Two parallel process trains - 2 x 15 MW (11m dia.) SAG mills - 2 x 13 MW (7.5m dia.) Ball Mills - Gravity gold concentration circuit - Copper Gold Flotation - Pyrite Flotation/Leach - Power
3 x 47MW LM 6000 gas turbines on site 450km gas pipeline, 138MW capacity
Open Pit Mining Method: - Conventional truck and hydraulic excavator operation, with excavators in backhoe configuration for selective mining in reef areas
- 12m benches for bulk mined mineralised areas - 4m lifts for selective mining - Mining Fleet
19 x 240 tonne haul trucks 1 x 630 tonne shovel 2 x 430 tonne shovel 1 x 230 tonne shovel 3 x D75S rotary drills
Pit Depth: - Main Dome 650m Started Production: November 2004 Underground Mining Method: Sub-level caving (SLC)
- between 900 1100m below surface - sub-level intervals of 25m
Shaft Dimensions: 700m west of Telfer Deeps SLC 7 m diameter x 1100m deep Possible Shaft Extension: to 1450m Workforce: Operating 1150 Dump Leach Material: 31Mt treated over LOM Ore Hardness (Bond Work Index): 13.7kWh/t (Range 7-16 kWh/t) Optimum Grind Size: 106m to 120 m Gold Recovery: 85% - 95% Copper Recovery: 75 86% Concentrate Production (Av): 130,000 170,000 dmt pa Concentrate Grade: 21 25% Cu