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Australia
Dargues Mine

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 Location:
60 km SE from Canberra, Australia

  Address:
920 Majors Creek Road
Majors Creek
New South Wales, Australia
2622
Phone  ...  Subscription required
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  • Mining
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  • Reserves
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  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Silver
Mining Method
  • Sub-level stoping
  • Backfill
Processing
  • Gravity separation
  • Flotation
Mine Life5 years (as of Jan 1, 2019)
Latest NewsAurelia snaps up $200m Dargues gold mine     November 13, 2020


Owners & OPERATOR

Source: p. 14
CompanyInterestOwnership
Diversified Minerals Pty Ltd. 100 % Indirect
Dargues Gold Mine Ltd. (operator) 100 % Direct
Modified Project Approval and Mining Lease are held by Big Island Mining Pty Ltd, a wholly owned subsidiary of Dargues Gold Mine Limited (the Company), which is itself a wholly owned subsidiary of Unity Mining Limited, with the ultimate parent company being Diversified Minerals Pty Ltd. The Company is the operator of the Mine.

Deposit Type

  • Vein / narrow vein
  • Greisen hosted


Summary:

Three major mineralisation styles are present: auriferous, pyrite-rich greisenous zones such as those at Dargues Reef, Exeter Farm and Scotsmans Gully; gold–base metal-rich veins/lodes, including those adjacent to the Majors Creek village; and those deposits which have both greisen- and vein-type mineralisation, including those in the Snobs mine area, which takes in Snobs Reef (Snobs Lode–Stewart & Mertons–United Miners zone) and The Creek prospect.


Mining Methods

  • Sub-level stoping
  • Backfill


Summary:

Underground development would commence with development of the decline. Underground mining of ore material would be undertaken using a sublevel open stoping mining method.

During mining operations, a number of development drives would be established at intervals within the ore zone. A series of holes would then be drilled from each drive and would then be sequentially loaded with explosives and the ore material blasted. The fragmented material would then be removed from the stope or open void using an underground loader, operated remotely where required, and loaded into haul trucks for transportation to the ROM pad. Between stopes, pillars (vertical) and sills (horizontal) unmined material is left to provide support and prevent ground collapse.

In order to ensure stability of sections of the proposed underground mine once mining operations have been completed in those sections, mined-out stopes would be backfilled using waste rock material sourced preferentially from concurrent underground development, with additional waste rock material transported from the surface, as required.


Crushing and Grinding


Processing

  • Gravity separation
  • Flotation

Flow Sheet: Subscription required

Summary:

Ore material will be processed within the processing plant to produce a combination of gold dorè, a gold and silver bearing sulphide concentrate and tailings material.

Ore material will be fed into a ROM bin from where it will pass to a three-stage crushing and screening circuit. Product screen undersize material (nominal <12 mm) will be transferred to an enclosed fine ore bin. Material from the fine ore bin will be reclaimed using one or more feeders. Reclaimed material will be directed to a primary ball mill for grinding.

The ground ore will be directed to a rougher flotation circuit where rougher flotation concentrate and tail streams are separated by the addition of flotation reagents and low pressure air. The rougher concentrate will be directed to the re-grind circuit whilst the rougher tail will be dewatered via a thickener prior to transfer to the tailings storage facility.

Rougher concentrate will be ground within a re-grind ball milling circui ........

CommodityParameter

Production:

CommodityUnitsAvg. Annual (Projected)LOM (Projected)
Gold oz 50,000248,900
Silver oz  ......  Subscription required
All production numbers are expressed as metal in conc./ doré.


Reserves at May 1, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven 503 kt Gold 5 g/t 81 koz
Probable 638 kt Gold 6.2 g/t 127 koz
Proven & Probable 1,140 kt Gold 5.7 g/t 208 koz
Measured 560 kt Gold 3.6 g/t 113 koz
Indicated 740 kt Gold 7.4 g/t 175 koz
Inferred 290 kt Gold 6.5 g/t 60 koz
Total Resource 1,590 kt Gold 6.8 g/t 348 koz


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2020
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Mine Operations Plan 2017
Other 2014
Subscription required - Subscription is required.

News:

NewsDate
Aurelia snaps up $200m Dargues gold mine November 13, 2020
Construction to start at Dargues gold project January 10, 2019

Aerial view:

Subscription required - Subscription is required.

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