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Australia
McArthur River Mine

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 Location:
716 km SE from Darwin, Northern Territory, Australia

  Regional Office:
34A Bishop St
PO Box 36821 Winnellie NT 0821
Winnellie
Northern Territory, Australia
0820
Phone  ...  Subscription required
Fax61-(8)-89758170
EmailEmail
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Zinc
  • Lead
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life19 years (as of Jan 1, 2021)
McArthur River Mine is the world’s second largest zinc and lead deposit.


Owners

Source: p. 18
CompanyInterestOwnership
Glencore plc. 100 % Indirect
McArthur River Mining Pty Ltd. (operator) 100 % Direct
McArthur River Mining Pty Ltd (MRM) is the operator of the Mine, and is a wholly owned subsidiary of Glencore.

Contractors

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Deposit Type

  • Sediment-hosted


Summary:

McArthur River Mine (formerly known as HYC) Zinc-lead-silver mineralisation occurs predominantly as ultrafine bedded parallel sphalerite and galena rich bands hosted by dolomitic and carbonaceous pyritic siltstones, graded beds and chaotic debris flow breccias. The HYC mineralisation covers an area of about two km2 and has an average thickness of about 55 m. It is 1.5 km west of the Emu Fault and separated from the fault by the Cooley Dolomite Member of the Barney Creek Formation and the Western Fault Block. The western margin of the deposit has been folded and eroded and the eastern margin is faulted against the Cooley Dolomite Member. The northern margin interfingers with sedimentary slump breccia derived from older McArthur River Group sediments to the north of the deposit. The southern margin, which has been down faulted by 100 to 200 m by the northeast trending Woyzbun Fault, is transitional into barren pyritic shale. The deposit is divided into seven mineralised intervals referred to as orebodies. Orebodies comprise shale with lesser amounts of sedimentary breccia and tuff. Number 1 orebody is used to refer to an interval of weak silver-lead-zinc mineralisation hosted by nodular dolomitic shale in the footwall sequence. In addition, there is a broad interval of weak silver-lead-zinc mineralisation hosted by nodular dolomitic shale in the immediate hanging wall, along the eastern margin of the deposit. The hanging wall sequence comprises interbedded dolomitic shale, ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The open pit excavation is being undertaken in six stages, with the first three targeting the shallowest ore. Conventional drilling, blasting, loading and haulage methods are used.

After blasting, the overburden is excavated in horizontal benches to expose the target ore, which we then remove for processing. Separating the ore and waste at the mining stage ensures a relatively pure ore is fed to the processing plant.

Excavators with up to 550 tonne capacity load 175-220 tonne haul trucks with ore or waste to be taken to stockpiles or the waste rock piles. The majority of the overburden rock from the open pit is stored at the North Overburden Emplacement Facility, or waste rock pile.


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits202120202019201820172016
Zinc kt  ......  Subscription required  ......  Subscription required  ......  Subscription required254210200
Lead kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2021202020192018
Ore tonnes mined  ......  Subscription required  ......  Subscription required4.3 Mt4.2 Mt
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Reserves at December 31, 2021:

CategoryTonnage CommodityGrade
Proven & Probable 91 Mt Zinc 8.8 %
Proven & Probable 91 Mt Lead 4.1 %
Proven & Probable 91 Mt Silver 41 g/t
Measured & Indicated 152 Mt Zinc 9.9 %
Measured & Indicated 152 Mt Lead 4.5 %
Measured & Indicated 152 Mt Silver 46 g/t



Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required May 9, 2022
....................... Subscription required ....................... Subscription required Subscription required May 17, 2022
....................... Subscription required ....................... Subscription required Subscription required May 17, 2022
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Staff:

EmployeesTotal WorkforceYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Review 2018
Other 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Annual Review 2017
Fact Sheet 2017
Annual Report 2016
Annual Review 2016
Other 2003
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