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Australia
West Musgrave Project

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 Location:
114 km E from Warburton, Western Australia, Australia

  Project Contacts:
16 Ord Street
PO Box 248 Adelaide Airport SA 5950
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageConstruction
Mine TypeOpen Pit
Commodities
  • Nickel
  • Copper
  • Cobalt
  • Gold
  • Silver
  • Palladium
  • Platinum
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life26 years (as of Jan 1, 2020)
The West Musgrave Project includes the Nebo and Babel nickel-copper deposits and the Succoth copper deposit.
Latest NewsMetso Outotec to deliver crushing, flotation and thickening tech to OZ Minerals West Musgrave     December 22, 2022


Owners

Source: p. 133
CompanyInterestOwnership
OZ Minerals Ltd. 100 % Indirect
The OZ Minerals Ltd. consolidated its ownership in the West Musgrave Project to 100 per cent in 2020.

Contractors

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Deposit Type

  • Magmatic
  • Breccia pipe / Stockwork


Summary:

The Babel deposit and Nebo deposit are hosted by a sub-horizontal, concentrically zoned, tube-shaped (chonolithic) gabbronorite intrusion. The east-west trending mafic intrusion has a known extent of 5 km, with a gentle 15-degree dip to the south, and in the case of Babel, a less than 10-degree plunge toward the south-west. Babel and Nebo are separated by the steeply-dipping, north-south trending Jameson Fault, with Babel to the west of the fault and Nebo to the east.

Babel consist of three main lithostratigraphic units, which are variably textured leucogabbronorite (VLGN) that forms the outer shell around mineralised gabbronorite (MGN), and barren gabbronorite (BGN) in the core of the intrusion. At Nebo, the main lithostratigraphic units are VLGN that forms an outer shell of the intrusion, around BGN and oxide-apatite gabbronorite (OAGN), which occur in the core of the intrusion at the eastern end (Seat et al. 2007). The Babel Nebo deposits contain two main styles of mineralisation: massive and breccia sulphides, which are a comparatively minor component of the overall sulphide inventory and disseminated gabbronorite-hosted sulphides that represent the bulk of the mineralisation. Massive and breccia sulphides at both deposits comprise, in decreasing abundance, pyrrhotite, pentlandite, chalcopyrite and trace pyrite. In most of the shallower intersections, supergene alteration has modified the primary sulphide assemblages to pyrite and violarite. The disseminated mi ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The West Musgrave Project consists of the Nebo and Babe pits. The deposits are near-surface and easily accessible by open pit mining with a pre-strip and initial ore stockpile for processing plant commissioning of approximately 32 Mt, some of which will be free dig.

Mining is modelled as conventional drill, blast, load and haul and assumed to be contractor operated during the first five years of operation, transitioning to owner operate in year six. The haulage fleet will comprise up to 25, 220 t haul trucks and optionality is being maintained to allow for these trucks to be fully autonomous in the future.

Mining equipment would include excavators, haul trucks, drill rigs, dozers, water trucks, service trucks and graders. Ore from the pits would be transferred by truck to the run-ofmine (ROM) stockpile pad located adjacent to the ore processing plant. An explosives magazine, conforming to relevant Australian Standards, would store explosives for open pit blasting activities.

Babel will be mined for the first two years to access higher grade, near-surface mineralisation, with Nebo to begin mining in year three.

Open Pit Characteristics for the Nebo Pit:
Width (m) - Up to 500;
Length (m)- Up to 2,100;
Depth (m) - Up to 270.

Open Pit Characteristics for the Babel Pit:
Width (m) - Up to 1,400;
Length (m) - Up to 2,200;
Depth (m) - Up to 520.

Stockpile strategies and in-pit dumping of ........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. Annual
Nickel kt 29
Copper kt  ......  Subscription required
All production numbers are expressed as metal in concentrate.

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Annual processing capacity  ......  Subscription required
Annual mining rate  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

Reserves at December 9, 2020:
The Mineral Resource has been reported at a Net Smelter Return (NSR) cut-off of A$20/t.

CategoryTonnage CommodityGradeContained Metal
Probable 253 Mt Nickel 0.32 % 820 kt
Probable 253 Mt Copper 0.35 % 890 kt
Probable 253 Mt Cobalt 120 ppm
Probable 253 Mt Gold 0.06 ppm
Probable 253 Mt Silver 1 ppm
Probable 253 Mt Palladium 0.1 ppm
Probable 253 Mt Platinum 0.1 ppm
Indicated 310 Mt Nickel 0.31 % 970 kt
Indicated 310 Mt Copper 0.34 % 1,000 kt
Indicated 310 Mt Cobalt 120 ppm
Indicated 310 Mt Gold 0.06 ppm
Indicated 310 Mt Silver 0.96 ppm
Indicated 310 Mt Palladium 0.09 ppm
Indicated 310 Mt Platinum 0.08 ppm
Inferred 82 Mt Nickel 0.32 % 260 kt
Inferred 82 Mt Copper 0.37 % 300 kt
Inferred 82 Mt Cobalt 120 ppm
Inferred 82 Mt Gold 0.06 ppm
Inferred 82 Mt Silver 1.1 ppm
Inferred 82 Mt Palladium 0.1 ppm
Inferred 82 Mt Platinum 0.09 ppm
Total Resource 390 Mt Nickel 0.31 % 1,200 kt
Total Resource 390 Mt Copper 0.34 % 1,300 kt
Total Resource 390 Mt Cobalt 120 ppm
Total Resource 390 Mt Gold 0.06 ppm
Total Resource 390 Mt Silver 1 ppm
Total Resource 390 Mt Palladium 0.09 ppm
Total Resource 390 Mt Platinum 0.08 ppm

Commodity Production Costs:

CommodityUnitsAverage
C1 cash costs Nickel USD  ......  Subscription required *†
C1 cash costs Copper USD  ......  Subscription required *†
Assumed price Nickel USD  ......  Subscription required&nbs
Assumed price Copper USD  ......  Subscription required&nbs
* According to 2020 study / presentation.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2020
OP mining costs ($/t milled) AUD 11.4 *
Processing costs ($/t milled) AUD  ......  Subscription required
G&A ($/t milled) AUD  ......  Subscription required
Total operating costs ($/t milled) AUD  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

2020 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M AUD  ......  Subscription required
Sustaining CapEx $M AUD  ......  Subscription required
Closure costs $M AUD  ......  Subscription required
After-tax NPV @ 8.5% $M AUD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of December 9, 2020:
HME TypeSizeQuantityLeased or
Contractor
Truck (underground) 220 t ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 1, 2022
....................... Subscription required ....................... Subscription required Subscription required May 6, 2022
....................... Subscription required ....................... Subscription required Subscription required May 6, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Corporate Presentation 2022
Other 2022
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Press Release 2018
Annual Report 2017
Press Release 2017
Corporate Presentation 2015
Subscription required - Subscription is required.

News:

NewsDate
Metso Outotec to deliver crushing, flotation and thickening tech to OZ Minerals West Musgrave December 22, 2022

Subscription required - Subscription is required.

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