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Australia
Aldiss Centre (Mount Monger Operation)

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 Location:
107 km SE from Kalgoorlie, Western Australia, Australia

  Address:
PO Box 750
Kalgoorlie
Western Australia, Australia
6433
Phone  ...  Subscription required
Fax+61-8-9024-2013
WebsiteWeb
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  • Overview
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Processing
  • Intensive Cyanidation Reactor (ICR)
  • Gravity separation
  • Agitated tank (VAT) leaching
  • Carbon in pulp (CIP)
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life2021


Owners

Source: p. 66
CompanyInterestOwnership
Silver Lake Resources Ltd. 100 % Indirect

Deposit Type

  • Sedimentary


Summary:

Aldiss deposits Main Zone, Harry’s Hill, Tank/Atreides, Italia/Argonaut, French Kiss and Spice are hosted in amphibolites and metasediments striking north/south and dipping steeply to the west. The vast majority of the gold mineralisation occurs in amphibolite rock that has metamorphic foliations generally running subparallel to the sedimentary layering. The gold mineralisation dips steeply to the west with a variety of plunges from 30° to the north at the Karonie main zone deposit to 30° south at French Kiss.

Main Zone, Harry’s Hill, Tank/Atreides and Spice deposits are amphibolite grade metamorphosed. Italia/Argonaut and French Kiss are greenschist grade metamorphosed.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Open pit mining will be focused at Karonie South through FY21. Material movements and strip ratio are higher in first half, prior to the strip ratio declining to below the life of mine average and grades increasing to above the life of mine average in the second half. Silver Lake has a strong pipeline of projects at Aldiss with the potential to continue mining operations beyond Karonie South. The most advanced project is Tank South, where Silver Lake is currently evaluating the optimal mine plan. Silver Lake is also evaluating a potential open pit development at both Tank and Atreides.


Crushing and Grinding


Processing

  • Intensive Cyanidation Reactor (ICR)
  • Gravity separation
  • Agitated tank (VAT) leaching
  • Carbon in pulp (CIP)
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Source: Subscription required

Summary:

All ore from the Mount Monger Operation is processed through the 1.3 mtpa Randalls facility, located 65 km south east of Kalgoorlie and is 15 km from the Daisy Complex.

Gold recovery consists of both a gravity circuit containing two gravity concentrators an intensive cyanidation unit and hybrid CIP circuit comprising two leach tanks and six adsorption vessels. Gold is stripped from the loaded using a pressure Zadra type elution circuit consisting of two elution columns and the gold is subsequently recovered from the cathodes of the gravity and electrowinning cells.

Recoveries & Grades:

CommodityParameter20202019
Gold Head Grade, g/t  ......  Subscription required  ......  Subscription required

Production:

CommodityUnits20202019
Gold koz  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in ore.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20202019
Ore tonnes mined  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at June 30, 2020:

CategoryTonnage CommodityGradeContained Metal
Probable 2,142 kt Gold 2 g/t 139 koz
Indicated 6,803 kt Gold 2 g/t 443 koz
Inferred 2,734 kt Gold 1.6 g/t 143 koz
Total Resource 9,537 kt Gold 1.9 g/t 585 koz


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 25, 2021
....................... Subscription required ....................... Subscription required Subscription required Mar 25, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Corporate Presentation 2018
Annual Report 2017
Annual Report 2015
Press Release 2012
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Aerial view:

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