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Australia
Daisy Centre (Mount Monger Operation)

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

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

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Longhole stoping
Processing
  • Gravity separation
  • Concentrate leach
  • Agitated tank (VAT) leaching
  • Carbon in pulp (CIP)
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)


Owners & OPERATOR

 
CompanyInterestOwnership
GBF Underground Mining Company (operator)
Silver Lake Resources Ltd. 100 % Direct

Deposit Type

  • Breccia pipe / Stockwork


Summary:

The Daisy Milano mine lies between the Christmas Flats and Lorna Doone Pits and contains several mineralized structures including the one which is also exposed in the Christmas Flats Pit. Gold is hosted in narrow quartz veins at or near contacts between NNW-trending porphyritic dikes and the surrounding andesite which is either pillowed or brecciated.

SW, and cross-cut by moderately N-dipping tourmaline-bearing quartz veins, post-dating gold mineralization (and also found in the Lorna Doone Pit). Gold-bearing quartz veins are usually steeplydipping WSW, parallel to the dikes but sometimes dip more gently near faults. These quartz veins are typically very narrow (<1 cm to 5 cm) and can define ptygmatic folds within porphyritic dikes. The ore-shoot in the mine plunges moderately to SE.


Mining Methods

  • Longhole stoping


Summary:

Daisy Complex is currently mined using handheld and mechanised methods. Airleg development and stoping is undertaken in narrower ore zones while in all other areas ore production is derived from single and twin boom jumbo development and selective longhole stoping.


Crushing and Grinding


Processing

  • Gravity separation
  • Concentrate leach
  • 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:

CommodityParameter201920182017
Gold Head Grade, g/t 5.76.47

Production:

CommodityUnits201920182017
Gold oz  ......  Subscription required  ......  Subscription required67,106
All production numbers are expressed as metal in ore.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at June 30, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven 41 kt Gold 6.7 g/t 9 koz
Probable 277 kt Gold 8.8 g/t 78 koz
Proven & Probable 318 kt Gold 8.5 g/t 87 koz
Measured 623 kt Gold 6.8 g/t 136 koz
Indicated 2,676 kt Gold 7.1 g/t 611 koz
Inferred 3,984 kt Gold 6.9 g/t 881 koz
Total Resource 7,283 kt Gold 7 g/t 1,628 koz


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 26, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Quarterly Report 2017
Annual Report 2015
Other 2015
Subscription required - Subscription is required.

Aerial view:

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