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Australia
White Foil Mine (Mungari Operation)

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 Location:
18 km W from Kalgoorlie, Western Australia, Australia

  Address:
Kundana Road PO Box 10398
Kalgoorlie
Western Australia, Australia
6430
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
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  • Reserves
  • Fleet
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Gravity separation
  • Carbon re-activation kiln
  • Smelting
  • Consep Acacia Reactor
  • Centrifugal concentrator
  • Crush & Screen plant
  • Concentrate leach
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Carbon in pulp (CIP)
  • AARL elution
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)


Owners

Source: p. 16
CompanyInterestOwnership
Evolution Mining Ltd. 100 % Indirect
Evolution Mining Mungari Pty Ltd. (operator) 100 % Direct
Evolution operates wholly-owned mine Mungari in Western Australia.

Evolution Mining Ltd (EVO) operates the Mungari Gold Operations (MGO) including the Frog’s Leg and White Foil gold projects.

Evolution Mining (Mungari) Pty Ltd is a wholly owned subsidiary of Evolution Mining Limited.

Deposit Type

  • Breccia pipe / Stockwork


Summary:

Mineralisation at White Foil is hosted within a brittle quartz gabbro unit. The gold is associated with quartz stockworks. Structural studies confirms the presence of two main vein sets at White Foil with a dominant moderately NNW dipping set (51º/346º dip and dip direction) and a secondary SSE dipping set (56º/174º dip and dip direction). An identifiable systematic bias associated with drilling direction has not been established. The main strike to the gabbro unit is NNW-SSE and it plunges steeply towards the NNE. The predominant drill direction was to the SE.

The White Foil gold deposit is a quartz stockwork hosted in a gabbro. The gabbro is differentiated broadly into a quartz-rich phase in the west. This quartz gabbro unit is the most hydrothermally altered unit and contains the bulk of the gold mineralisation. The White Foil deposit is bounded to the west by hangingwall volcaniclastic rocks. To the east mineralisation becomes irregular and uneconomic in the more melanocratic phase of gabbro. Mineralisation is controlled by sheeted systems of stockwork veining, which has imparted strong alteration and sulphidation to the quartz gabbro.


Mining Methods

  • Truck & Shovel / Loader


Summary:

White Foil is the open pit mine at the Mungari operations and utilises conventional drill and blast, load and haul methods.


Crushing and Grinding
Flow Sheet: Source


Processing

  • Gravity separation
  • Carbon re-activation kiln
  • Smelting
  • Consep Acacia Reactor
  • Centrifugal concentrator
  • Crush & Screen plant
  • Concentrate leach
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Carbon in pulp (CIP)
  • AARL elution
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

Three stage crushing, ball mill, gravity and carbon-in-pulp (CIP).

-Recovery: 90 - 93%

Leaching:
- Leaching: 2 x 1,140 m3 tanks;
- Adsorption: 6 x 750 m3 tanks;
- Elution: split AARL;
- Electrowinning: 3 x Consep tanks [2 x carbon-in-leach (CIL), 2 x gravity].

Gravity circuit:
- Concentrator: 2 x Knelson;
- Intensive Leach: Consep Acacia.

Recoveries & Grades:

CommodityParameter202020192018
Gold Head Grade, g/t  ......  Subscription required  ......  Subscription required1.61

Production:

CommodityUnits202020192018
Gold koz  ......  Subscription required  ......  Subscription required26
All production numbers are expressed as metal in ore.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required1,640 kt501 kt1,044 kt1,121 kt
Waste  ......  Subscription required  ......  Subscription required5,436 kt3,086 kt
Subscription required - Subscription is required.

Reserves at December 31, 2020:
The Ore Reserve reported at a cut-off of 0.75 g/t.
The Mineral Resource reported at a cut-off of 0.5 g/t.

CategoryTonnage CommodityGradeContained Metal
Probable 9.68 Mt Gold 1.35 g/t 419 koz
Indicated 37.55 Mt Gold 1.19 g/t 1,443 koz
Inferred 6.8 Mt Gold 1.35 g/t 296 koz
Total Resource 44.36 Mt Gold 1.22 g/t 1,739 koz


Heavy Mobile Equipment as of June 30, 2021:
HME TypeModelQuantityLeased or
Contractor
Dozer ....................... Subscription required ....................... Subscription required
Drill (blasthole) ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (water) ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 10, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

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