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Australia
Kalgoorlie Consolidated Gold Mines (KCGM) Operation (Mt Charlotte Mine)

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 Location:
0 km E from Kalgoorlie-Boulder, Western Australia, Australia
  Address:
Black Street
PMB 27
Kalgoorlie
Western Australia, Australia
6433
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
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  • Filings & News
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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Sub-level caving
  • Longhole open stoping
  • Avoca
  • Backfill
Production Start...
Mine Life2034
The Kalgoorlie Operations comprising the Fimiston Open Pit (The Super Pit), the Mt Charlotte underground mine and the Fimiston and Gidji processing plants.

The Super Pit One of Australia’s largest open pit gold mines.

Feasibility Study planned for Fimiston North during FY23, pending results, initial development planned FY24.

Fimiston South will extend KCGM Operations’ Life of Mine to 2034.

Owners

Source: p. 178
CompanyInterestOwnership
Northern Star Resources Ltd. 100 % Indirect
Kalgoorlie Consolidated Gold Mines Pty Ltd. (operator) 100 % Direct
KCGM means Kalgoorlie Consolidated Gold Mines Pty Ltd, a wholly owned subsidiary of the Northern Star, which operates the Super Pit and Mt Charlotte underground operations.

Contractors

Subscription required - Subscription is required.

Deposit Type

  • Vein / narrow vein
  • Breccia pipe / Stockwork

Summary:

The Golden Mile deposit occurs in the Kalgoorlie Terrane within the southern portion of the NNW trending Archaean Norseman-Wiluna Greenstone Belt. The greenstone belt has been multiply deformed and regionally metamorphosed to grades varying from lower greenschist to amphibolite grade. The stratigraphy covered by the Fimiston Project tenements consists of a basal ultramafic unit called the Hannan Lake Serpentinite. This ultramafic unit is overlain successively by the high magnesian Devon Consols Basalt, Kapai Slate, tholeiitic Paringa Basalt and the Black Flag sediments. Differentiated zones of dolerite and gabbro texture occur within the mafic sequence. The Golden Mile Dolerite, hosting the bulk of the Golden Mile and Mount Charlotte gold mineralisation, is a strongly differentiated layered gabbro, approximately 700m in thickness. The Golden Mile Dolerite is situated conformably between the Paringa Basalt and the Black Flag sediments. This entire stratigraphic sequence is intruded by numerous porphyry dykes of intermediate to felsic composition. The Fimiston style gold mineralisation, which accounts for the bulk of the economic gold ore of the Golden Mile deposit, is hosted dominantly in the Golden Mile Dolerite with lesser mineralisation hosted in the Paringa Basalt. The Golden Mile deposit is an intensely mineralised Archaean shear zone system developed between the Adelaide and Golden Pike faults. Gold mineralisation occurs over a north-south strike length of 4,250m, a wi ........

Mining Methods

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

Summary:

Fimiston Open Pit
The selected mining method for the Fimiston Open Pit is a bench mining open pit method. The proposed open pit cutbacks will be mined using conventional open pit mining methods (drill, blast, load and haul) under an owner operator model, utilising 800t class excavators and 240t class trucks. This method is consistent with the current and historic mining method of the Fimiston Open Pit and is deemed appropriate given the proposed cutbacks are an extension of the current Fimiston Open Pit.

Open Pit Mining
Open pit make-over:
- Mining areas doubling from two to four:
- Golden Pike South - Underway
- Morrison (Fimiston South starter) - Underway
- OBH (Oroya Brownhill) - Underway
- Fimiston South - Underway

Open Pit Mining - Fimiston South:
- Two stages, Stage 1 underway
-12 year mine life
- 10:1 average strip ratio
- 850Mt total material movement

Open Pit Mining - Golden Pike
- High grades - Reserves 23Mt, 2.0g/t for 1.5Moz
- Low strip ratio of 1.6:1
- Waste pre-stripping completed in the preceding ~10 years by former owners
- Mining continues at the Golden Pike South cutback
- The Golden Pike North cutback will commence in FY24, once the East Wall remediation work is completed under the new Oroya Brownhill plan

Open Pit Mining - Oroya Brownhill (OBH)
- Mining underway, eight years of mining planned in two stages
- Average st ........

Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.

Production:
2020 production numbers reflect production for seven months period from December 2019 to June 2020. Saracen acquired 50% stake in the KCGM JV in late of November 2019.

CommodityUnits2022202120202019201820172016
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required628736752
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required11,414 kt13,158 kt12,832 kt
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required26,792 kt29,054 kt53,362 kt
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required21,094 kt19,594 kt38,190 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required4.51 2.29 2.7
Subscription required - Subscription is required.

Reserves at March 31, 2022:
Fimiston
Mineral Resources: the open pit cut-off grade of 0.5gpt and the Fimiston underground cut-off grade is 1.2gpt these have been derived from current mining costs and parameters at AUD$2,250/oz. The Ore Reserve Estimation is based on a cut-off of 0.50gpt and accounts for mining dilution.

Mt Charlotte
Mineral Resources: the adopted cut-off grades for Mineral Resource Estimation reporting are 1.25g/t for Underground Resources, these have been derived from current mining costs and parameters at $2,250/oz.

CategoryTonnage CommodityGradeContained Metal
Proven 122,976 kt Gold 0.7 g/t 2,889 koz
Probable 157,874 kt Gold 1.8 g/t 9,037 koz
Proven & Probable 280,850 kt Gold 1.3 g/t 11,926 koz
Measured 122,976 kt Gold 0.7 g/t 2,889 koz
Indicated 268,945 kt Gold 1.8 g/t 15,882 koz
Inferred 154,046 kt Gold 1.7 g/t 8,586 koz
Total Resource 545,967 kt Gold 1.6 g/t 27,357 koz

Commodity Production Costs:

Commodity202220212020201920182017
Credits (by-product) Gold  ......  Subscription required  ......  Subscription required
Cash costs Gold  ......  Subscription required
Cash costs (sold) Gold
Total cash costs (sold) Gold  ......  Subscription required 737 / oz  USD 647 / oz  USD
Total cash costs (sold) Gold  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 732 / oz†  USD 642 / oz†  USD
All-in sustaining costs (sold) Gold  ......  Subscription required  ......  Subscription required 862 / oz  USD 734 / oz  USD
All-in sustaining costs (sold) Gold  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 857 / oz†  USD 729 / oz†  USD
All-in costs Gold  ......  Subscription required 862 / oz  USD 734 / oz  USD
All-in costs Gold  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 857 / oz†  USD 729 / oz†  USD
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units201920182017
OP mining costs ($/t mined) USD 4.255.363.57
UG mining costs ($/t mined) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units2022202120202019201820172016
Growth Capital M AUD  ......  Subscription required  ......  Subscription required
Capital expenditures M  ......  Subscription required 48  USD 41  USD 41  USD
Revenue M  ......  Subscription required  ......  Subscription required
Pre-tax Income M  ......  Subscription required  ......  Subscription required
EBITDA M  ......  Subscription required  ......  Subscription required
Operating Cash Flow M  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required

Heavy Mobile Equipment:
HME TypeModelQuantityStatusRef. Date
Dozer (crawler) ....................... Subscription required ....................... Subscription required Existing May 26, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed May 26, 2021
Drill ....................... Subscription required ....................... Subscription required Existing Jul 1, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed May 26, 2021
Jumbo ....................... Subscription required ....................... Subscription required Existing May 26, 2021
Jumbo ....................... Subscription required ....................... Subscription required Existing Jul 1, 2022
Loader ....................... Subscription required ....................... Subscription required Existing Jul 1, 2022
Loader ....................... Subscription required ....................... Subscription required Existing Jul 1, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed May 26, 2021
Shovel ....................... Subscription required ....................... Subscription required Existing Jul 1, 2022
Truck (dump) ....................... Subscription required ....................... Subscription required Existing Jul 1, 2022
Truck (service) ....................... Subscription required ....................... Subscription required Existing May 26, 2021
Truck (underground) ....................... Subscription required ....................... Subscription required Existing Jul 1, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed May 26, 2021
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 30, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required 2021
Subscription required 2020
Subscription required Subscription required Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Press Release 2022
Quarterly Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
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................................... Subscription required 2020
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................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
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Form 10-K 2018
Other 2018
Quarterly Report 2018
Annual Report 2017
Other 2017
Other 2017
Other 2017
Press Release 2017
Quarterly Report 2017
Annual Report 2016
Management Discussion & Analysis 2016
Environmental Assessment 2015
Other 2015
Press Release 2015
Annual Report 2014
Form 10-K 2014
Press Release 2014
Other 2006
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