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Australia
Telfer Operation (Havieron Project)

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 Location:
216 km E from Nullagine, Western Australia, Australia

  Address:
Level 1, 1 Centro Ave
Subiaco
Western Australia, Australia
6008
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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
  • Copper
  • Silver
Mining Method
  • Truck & Shovel / Loader
  • Sub-level caving
  • Longhole stoping
Production Start...
Mine Life2025
Telfer Province includes the Telfer Open Pit Stockpiles, West Dome Open Pit (production stage), Telfer Underground (production stage), Havieron (under construction), Satellites Deposits and O’Callaghans.

Telfer mine life further extended with West Dome Stage 8 approval. The mine now expected to extend operations into early FY25. First ore production is expected in the December 2022 quarter.


Owners

Source: p. 17
CompanyInterestOwnershipInvestor's Info
Newcrest Mining Ltd. 100 % Indirect

Contractors

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Deposit Type

  • Intrusion related
  • Breccia pipe / Stockwork


Summary:

Gold and copper mineralization at Telfer consists of stratiform reefs and stockworks hosted by sedimentary rocks of the Malu Formation of the Lamil Group. The Lamil Group comprises relatively weakly deformed and metamorphosed Proterozoic sediment units northeast of the Camel-Tabletop Fault. The important attributes of the Lamil Group are the presence of abundant carbonate units, and weakly developed penetrative deformation.

The topography at the Telfer mine site is dominated by two large scale asymmetric dome structures with steep west dipping axial planes. Main Dome is located in the southeast portion of the mine and is exposed over a strike distance of 3km north-south and 2km east-west before plunging under transported cover. West Dome forms the topographical high in the northwest quadrant of the mine and has similar dimensions to Main Dome. Both fold structures have shallow to moderately dipping western limbs and moderate to steep dipping eastern limbs.

Mineral Resources reported for the Telfer mining centre consist of:
• open pit stockwork and reef mineralization in Telfer Main Dome and West Dome;
• stockwork and reef mineralization mined underground in the Telfer Underground SLC mining operation;
• stockwork mineralization in the VSC below the SLC.

Mineralization within the Telfer deposit is controlled by structure and lithology. Several styles of mineralization were recognized, namely narrow high-grade reefs, pod-like min ........


Mining Methods

  • Truck & Shovel / Loader
  • Sub-level caving
  • Longhole stoping


Summary:

The Telfer operation is comprised of open pit mining at both Main Dome and West Dome and underground mining at Main Dome. Open pit mining is a conventional truck and hydraulic excavator operation. Underground selective and bulk long hole open stope mining methods are used for excavation of the high-grade reefs and Western Flanks respectively, while stockwork ore and waste are mined using sub level cave bulk mining methods. Underground sub level cave mining ore and Western Flanks bulk open stope ore is hoisted to the surface via a shaft.

Open pit mining has continued at both Main Dome and West Dome open pits (including stockpile reclaim). Since 31 December 2019, the Mineral Resources and Ore Reserves were depleted by 0.2 million ounces of gold and 0.01 million tonnes of copper. Mining of Ore Reserves in the Main Dome open pit was completed in the fourth quarter of FY20. Further studies are currently evaluating potential for additional Ore Reserves in Main Dome open pit.

The Telfer Underground comprises the sub level cave mine and selective high-grade reef mining and Western Flanks reef and stockwork mining. Since 31 December 2019, both the Mineral Resources and Ore Reserves have been depleted by 0.05 million ounces of gold and <0.01 million tonnes of copper. Underground Ore Reserves for the sub level cave were completed. Further studies are currently evaluating the potential for additional Ore Reserves at the sub level cave and other underground areas to ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityProductUnits2022202120202019201820172016
Gold Metal in conc./ doré koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required426386462
Copper Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in conc./ doré koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Concentrate kt  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
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Operational Metrics:

Metrics202220212020201920182017
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required22,734 kt23,026 kt21,187 kt
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required59,581 kt44,293 kt34,144 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required21,923 kt20,321 kt15,686 kt
Subscription required - Subscription is required.

Reserves at June 30, 2022:
Mineral Resource Cut-Off Criteria: Telfer West Dome Open Pit - NSR of A$21.20/t milled; Telfer Stockpiles - NSR of A$21.20/t milled; Telfer Underground - Variable NSR of A$ 44.92/t - A$147.96/t milled; Havieron - Variable NSR of A$ 50.00/t - A$100.00/t milled; Satellites Deposits = 0.20g/t gold in oxide material, 0.30g/t gold for transitional and 0.54g/t gold in fresh material based on dump leach processing; Camp Dome - 0.13% copper based on dump leach processing; O'Callaghans - NSR of A$54.90/t milled applied to visible high grade mineralised skarn that has a minimum 5m height.

Ore Reserve Cut-Off Criteria: Telfer West Dome Open Pit - NSR of A$19.20/t milled; Telfer Stockpiles - NSR of A$19.20/t milled; Telfer Underground - Variable NSR of A$ 44.92/t - A$147.96/t milled; Havieron - NSR of A$130.00/t milled.

CategoryTonnage CommodityGradeContained Metal
Probable 30.7 Mt Gold 0.65 g/t 0.64 M oz
Probable 30.7 Mt Copper 0.12 % 0.0361 Mt
Measured & Indicated 132.44 Mt Gold 0.92 g/t 3.9 M oz
Measured & Indicated 201 Mt Copper 0.21 % 0.423 Mt
Inferred 15.9 Mt Gold 1.31 g/t 0.668 M oz
Inferred 34.5 Mt Copper 0.35 % 0.1222 Mt

Commodity Production Costs:

CommodityUnits2022202120202019201820172016
Credits (by-product) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -259 / oz  
Total cash costs Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 1,033 / oz†  
All-in sustaining costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 1,262 / oz†   1,178 / oz†   967 / oz†  
All-in costs Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 1,302 / oz†  
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 46   51  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 98   101  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 686   631  
EBIT M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -60   6  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 140   144  
Operating Cash Flow M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 135   178  
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Heavy Mobile Equipment:
HME TypeModelQuantityLeased or
Contractor
Ref. Date
Drill ....................... Subscription required ....................... Subscription required Leased Oct 27, 2022
Drill ....................... Subscription required ....................... Subscription required Leased Oct 27, 2022
Drill ....................... Subscription required ....................... Subscription required Leased Oct 27, 2022
Excavator ....................... Subscription required ....................... Subscription required Dec 31, 2013
Loader ....................... Subscription required ....................... Subscription required Leased Oct 27, 2022
Loader (FEL) ....................... Subscription required ....................... Subscription required Dec 31, 2013
Truck (dump) ....................... Subscription required ....................... Subscription required Dec 31, 2013
Truck (underground) ....................... Subscription required ....................... Subscription required Leased Oct 27, 2022
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 26, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018
Subscription required Subscription required 2017
Subscription required Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Financial Review 2022
Press Release 2022
Quarterly Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Corporate Presentation 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Corporate Presentation 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Corporate Presentation 2016
Fact Sheet 2015
Technical Report 2013
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