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Australia
Dry River South (Surveyor UG) Mine

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 Location:
128 km SW from Mount Garnet, Queensland, Australia

  Regional Office:
395 Lake Street
Cairns North
Queensland, Australia
4870
Phone  ...  Subscription required
Fax+61-(0)-7-4027-9429
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
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  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Zinc
  • Lead
  • Copper
  • Gold
  • Silver
Mining Method
  • Longhole open stoping
  • Avoca
Processing
  • Flotation
In 2017, Consolidated Tin Mines Ltd. commenced re-accessing and rehabilitating an underground section of the Surveyor mine known as Dry River South. Rehabilitation of the main decline (800m) to upper levels was completed in early 2018 with ore mining commencing in May 2018.


Owners

Source: p. 20
CompanyInterestOwnership
Consolidated Tin Mines Ltd. 100 % Indirect

Deposit Type

  • VMS


Summary:

The Dry River South Deposit zinc, lead-rich polymetallic orebody is a sheet of massive pyritic sulphides that dips at a shallow angle to the ESE and plunges gently to the SSW. Massive pyritic sulphides lie along, and just below, the upper contact between highly altered felsic volcanics and relatively unaltered hanging-wall metasediments and extend for up to 250 m down-dip and approximately 800 m down-plunge. The orebody reaches a maximum thickness of about 15 m in structurally thickened domains. The orebody is delimited to the west by late faulting and an extensive body of quartz feldspar porphyry. Down-dip and down-plunge limits are defined by a decrease in sulphides. To the north, the DRS orebody is cut by a complex array of late faults including the NE-trending Andesite Fault. This is interpreted to represent the first stage of structural separation of the DRS orebody from the Surveyor orebody, which lies about 600 m to the north. Access is via a portal and decline from the Surveyor Mine open pit.


Mining Methods

  • Longhole open stoping
  • Avoca


Summary:

Currently operating at approximately 300ktpa. [02112019 CP, p. 17]

Rehabilitation of the existing DRS decline and upper level access is ongoing. The rehabilitation includes the installation of cable bolts and fibrecrete using the existing mining fleet. Mining of ore from the remnants within the 200 Panel is completed and the focus is now the 400 Level.

Extraction of Dry River South underground employs Longhole Open Stoping as the mining method in the upper remnant zones with Modified Avoca Stoping to be used to extract the DRS deeps orebody. Development and rehabilitation is achieved using CSD owned Atlas Copco M2D twin boom Jumbos. Longhole production drilling is achieved using CSD owned Sandvik DL432i Production Drill. Teleremote loading in stope is done by CSD CAT R1700 and R2900 loaders and ore is trucked to surface using CSD CAT AD55 articulated dump trucks. Fibrecrete is used throughout the mine, with contractor run batching plant, sprayer and ancillary equipment on site. Ore from the Dry River South Mine is hauled 150 km to Mount Garnet by road-train for processing at the Mount Garnet Processing Plant.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

Haulage of ore from the DRS mine to the Mt Garnet plant commenced in June 2018. [June 2018 QR, p. 1]

Mount Garnet Processing Plant currently processing ore from the Mt Garnet UG Mine and Dry River South UG Mine at a combined rate of approximately 500ktpa. [02/11/2020 Corporate Presentation, p. 18]

The Mount Garnet Processing Plan has an annual processing capacity of 1,000,000 tonnes of ore, comprising two individual circuits with shared infrastructure. One supergene copper circuit and one polymetallic circuit, with each circuit having a capacity of 500ktpa. Only the polymetallic circuit is in operation at this time with the supergene copper circuit held on care and maintenance. [Sept 2019 Notice of Annual General Meetings, p. 20]

Operation
A front-end loader (FEL) feeds ore from the ROM pad into a jaw crusher at a rate of approximately 200 t/h where it is crushed to less than 100 mm and then stockpiled on the Fine Ore Stockpile (FOS) via conveyor s ........

Recoveries & Grades:

CommodityParameter202020192018
Zinc Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Head Grade, % 5.135.553.57
Lead Recovery Rate, %  ......  Subscription required  ......  Subscription required
Lead Head Grade, % 1.051.66
Copper Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Head Grade, % 0.730.970.39
Subscription required - Subscription is required.

Production:

CommodityUnits202020192018
Zinc t  ......  Subscription required *  ......  Subscription required *  ......  Subscription required *
Lead t  ......  Subscription required*  ......  Subscription required*
Copper t  ......  Subscription required*  ......  Subscription required*  ......  Subscription required*
All production numbers are expressed as metal in concentrate. * Combined production for Mount Garnet Mine and Dry River South (Surveyor UG) Mine
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required
Annual mining rate  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at August 30, 2019:

CategoryTonnage CommodityGradeContained Metal
Indicated 347,789 t Zinc 10.59 % 34,173 t
Indicated 347,789 t Lead 4.22 % 13,630 t
Indicated 347,789 t Copper 0.8 % 2,380 t
Indicated 347,789 t Gold 0.64 g/t 63 koz
Indicated 347,789 t Silver 82.9 g/t 8,452 koz
Inferred 284,414 t Zinc 7.22 % 13,992 t
Inferred 284,414 t Lead 2.71 % 5,195 t
Inferred 284,414 t Copper 0.7 % 1,147 t
Inferred 284,414 t Gold 0.56 g/t 30.5 koz
Inferred 284,414 t Silver 63.6 g/t 3,751 koz


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Aug 11, 2020
....................... Subscription required ....................... Subscription required Subscription required Aug 11, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Subscription required - Subscription is required.

Aerial view:

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