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Australia
Mt Keith Mine (Nickel West Operation)

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 Location:
77 km N from Leinster, Western Australia, Australia

  Regional Office:
125 St Georges Terrace
PO Box 238, Welshpool Delivery Centre, Welshpool, 6986
Perth
Western Australia, Australia
6000
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Nickel
Mining Method
  • Truck & Shovel / Loader
Processing
  • Crush & Screen plant
  • Flotation
Mine Life15 years (as of Jan 1, 2021)
Mt Keith mine and concentrator - Mt Keith Mine, Mt Keith Satellite Mine (Yakabindie).
Latest NewsSolar project to power BHP     February 2, 2022


Owners

Source: p. 234
CompanyInterestOwnershipInvestor's Info
BHP Group Ltd. 100 % Indirect
BHP Billiton Nickel West Pty Ltd. (operator) 100 % Direct
The Mt Keith Nickel Operation (NMK) is mine, wholly owned and operated by NiW (BHP Billiton Nickel West Pty Ltd), a subsidiary of BHP.

Deposit Type

  • Intrusion related
  • Magmatic
  • Metamorphic


Summary:

Disseminated textured magmatic nickel-sulphide mineralisation associated with a metamorphosed ultramafic intrusion.

The stratigraphy in the Mt Keith region is composed of ultramafic sequences (olivine cumulates and thin spinifex textured flows), basalts, volcanic and volcanoclastic rocks and sedimentary rocks The ultramafic sequence at Mt Keith is lenticular It faces W, dips 80- 85, and has undergone low- to mid-greenschist metamorphism The major komatiitic rock types include sulphide-bearing olivine mesocumulate, olivine orthocumulate, talc-carbonate altered orthocumulates and a porphyry olivine rock The non sulphide mineralogy consists of hydrated Mg silicates (Iizardite, antigorite, chrysotile, talc), Mg oxy carboxyl hydroxides (brucite, stichtite, pyroaurite, iowaite), spinels (chromite, magnetite), carbonates (magnesite, dolomite), tremolite-actinolite and chlorite The disseminated sulphide mineralogy is dominated by pentlandite, with minor millerite, viola rite and pyrrhotite Trace amounts of pyrite, chalcopyrite, heazlewoodite, gersdorffite, polydymite, tochilinite, sphalerite and exsolved Co sulphides are also present.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining of nickel sulphide ore through conventional open-cut mining methods, involving drill and blast and categorisation of blasted material into ore and waste rock.


Crushing and Grinding


Processing

  • Crush & Screen plant
  • Flotation

Source: Subscription required

Summary:

Disseminated sulphide ore is mined at the Mt Keith open-pit operation and crushed and processed onsite to produce nickel concentrate. Concentration plant with a nominal capacity: 11 Mtpa of ore.

Recoveries & Grades:

CommodityParameter202120202019
Nickel Concentrate Grade, %  ......  Subscription required  ......  Subscription required  ......  Subscription required

Production:

CommodityUnits2021202020192018
Nickel kt  ......  Subscription required  ......  Subscription required  ......  Subscription required205
All production numbers are expressed as concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Plant annual capacity  ......  Subscription required  ......  Subscription required11 Mt11 Mt11 Mt12 Mt
Subscription required - Subscription is required.

Reserves at June 30, 2021:
Cut-off criteria:
Mineral Resources: OC Disseminated Sulphide - Variable between 0.35%Ni and 0.40%Ni.
Ore Reserves: OC - 0.35%Ni and 0.18% recoverable Ni.

CategoryOreTypeTonnage CommodityGrade
Proven Stockpiles 4.3 Mt Nickel 0.56 %
Proven In-Situ (OP) 188 Mt Nickel 0.55 %
Probable Stockpiles 1.34 Mt Nickel 0.45 %
Probable In-Situ (OP) 68 Mt Nickel 0.58 %
Proven & Probable Stockpiles 5.7 Mt Nickel 0.53 %
Proven & Probable In-Situ (OP) 256 Mt Nickel 0.56 %
Measured Stockpiles 5.7 Mt Nickel 0.53 %
Measured In-Situ (OP) 270 Mt Nickel 0.57 %
Indicated In-Situ (OP) 174 Mt Nickel 0.58 %
Inferred In-Situ (OP) 194 Mt Nickel 0.6 %
Total Resource Stockpiles 5.7 Mt Nickel 0.53 %
Total Resource In-Situ (OP) 638 Mt Nickel 0.58 %


Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2021
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2021
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2021
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2021
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2021
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Environmental Assessment 2018
Annual Report 2017
Annual Report 2017
Annual Report 2017
Annual Report 2016
Annual Report 2015
Other 2003
Subscription required - Subscription is required.

News:

NewsDate
Solar project to power BHP February 2, 2022
BHP targets Mount Keith ramp up August 3, 2021
BHP charges up Nickel West with clean energy July 30, 2021
BHP Nickel West mine receives EPA backing November 21, 2018

Aerial view:

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