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Australia
White Foil Mine (Mungari Operation)

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

  Regional Office:
Level 30 175 Liverpool Street
Sydney
Western Australia, Australia
2000
Phone  ...  Subscription required
Fax+61-2-9696-2901
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Gravity separation
  • Agitated tank leaching
  • Concentrate leach
  • Carbon in pulp (CIP)
  • AARL elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)


Owners & OPERATOR

 
CompanyInterestOwnership
Evolution Mining Ltd. (operator) 100 % Direct

Deposit Type

  • Breccia pipe / Stockwork


Summary:

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.


Processing Technologies

  • Gravity separation
  • Agitated tank leaching
  • Concentrate leach
  • Carbon in pulp (CIP)
  • AARL elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Source

Summary:

Three stage crushing: Primary Metso C140 Jaw crusher (220kW) -1250 x 940mm throat- feed size 800mm, product size p80-120mm. Secondary(1) and tertiary(1) crushers: Metso HP 4 (315kW) Product size 17mm. Product Screen: Joest inclined vibrating screen 2.44 x 7.6m. 4 x conveyor belts, Belt and static magnets as well as a rock breaker for the primary crusher.

Ball Mill with 4,500kW installed power, Mill size 5.5m(dia) x 8.74m(l), Polymet composite liners, Classification Weir Cavex 250mm (x11) Grind size p80 – 106 µm. Gravity & CIP

CIP leach circuit with 2 x 1,140m tanks and 6 x 750m adsorption tanks. Elution circuit – split AARL. 3 x Electrowinning tanks - Consep, 2 in parallel for leach circuit and 1 for gravity circuit

Recoveries & Grades:

CommodityParameter2018
Gold Head Grade, g/t 1.61

Production:

CommodityUnits2018
Gold koz  ......  Subscription required
All production numbers are expressed as metal in ore.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required1,121 kt
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven 0.27 Mt Gold 1.14 g/t 10 koz
Probable 9.85 Mt Gold 1.61 g/t 511 koz
Proven & Probable 10.12 Mt Gold 1.6 g/t 521 koz
Measured 0.19 Mt Gold 1.02 g/t 6 koz
Indicated 35.03 Mt Gold 1.27 g/t 1,433 koz
Inferred 9.27 Mt Gold 1.56 g/t 463 koz
Total Resource 44.49 Mt Gold 1.33 g/t 1,902 koz


Heavy Mobile Equipment as of December 31, 2018:
HME TypeModelQuantity
Dozer ....................... Subscription required 2
Drill ....................... Subscription required 5
Excavator ....................... Subscription required 1
Excavator ....................... Subscription required 1
Excavator ....................... Subscription required 1
Grader ....................... Subscription required 1
Truck (haul) ....................... Subscription required 7
Truck (water) ....................... Subscription required 1
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required May 15, 2019
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2017
................................... Subscription required 2017
................................... Subscription required 2017
................................... Subscription required 2016
Subscription required - Subscription is required.

Aerial view:

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