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Australia
Renison Mine (Renison Area 5 (Expansion) Project)

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 Location:
8 km W from Rosebery, Tasmania, Australia

  Address:
Level 5, 197 St Georges Terrace
PO Box 7248
Perth
Western Australia, Australia
6000
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Tin
  • Copper
Mining Method
  • Bench stoping
  • Open stoping
  • Cemented backfill
  • Backfill
Processing
  • Desliming
  • Dewatering
  • Centrifugal concentrator
  • Gravity separation
  • Flotation
  • Acid tank leaching
  • Magnetic separation
Mine Life10 years (as of Jan 1, 2020)
Renison is one of the world’s largest operating underground tin mines and Australia’s largest primary tin producer.
Latest NewsGR Engineering secures work around the country     November 3, 2021


Owners

Source: p. 83
CompanyInterestOwnership
Metals X Ltd. 50 % Indirect
Yunnan Tin Group Holding Co Ltd. 50 % Indirect
Bluestone Mines Tasmania Joint Venture Pty Ltd. (operator) 100 % Direct
Subsidiary Bluestone Mines Tasmania Pty Ltd has a 50% interest and participating share in the Renison Tin Operations which is operated and managed by Bluestone Mines Tasmania Joint Venture Pty Ltd. The Consolidated Entity is entitled to 50% of the production.

Deposit Type

  • Carbonate replacement
  • Skarn


Summary:

Renison is the largest of three major Skarn, carbonate replacement, pyrrhotite-cassiterite deposits within western Tasmania. The Renison Mine area is situated in the Dundas Trough, a province underlain by a thick sequence of Neoproterozoic Cambrian siliciclastic and volcaniclastic rocks. At Renison there are three shallow-dipping dolomite horizons which host replacement mineralisation.

Mount Bischoff is the second of three major Skarn, carbonate replacement, pyrrhotite cassiterite deposits within western Tasmania. The Mount Bischoff Mine area is situated within the Dundas Trough, a province underlain by a thick sequence of Neoproterozoic- Cambrian siliciclastic and volcaniclastic rocks. At Mount Bischoff folded and faulted shallow dipping dolomite horizons host replacement mineralisation with fluid interpreted to be sourced from the forceful emplacement of a granite ridge and associated porphyry intrusions associated with the Devonian Meredith Granite, which resulted in the complex brittle / ductile deformation of the host rocks. Lithologies outside the current mining area are almost exclusively metamorphosed siltstones. Major porphyry dykes and faults such as the Giblin and Queen provided the major focus for ascending hydrothermal fluids from a buried ridge of the Meredith Granite. Mineralisation has resulted in tin-rich sulphide replacement in the dolomite lodes, greisen and sulphide lodes in the porphyry and fault / vein lodes in the major faults. All lodes contain tin as cassiterite within sulphide mineralisation with some coarse cassiterite as veins throughout the lodes.


Mining Methods

  • Bench stoping
  • Open stoping
  • Cemented backfill
  • Backfill


Summary:

RENISON TIN OPERATIONS
The Renison Tin Mine (Renison) is located approximately 15km north-east of Zeehan on Tasmania’s west coast. Renison is a world-class, long life underground mining operation producing tin concentrate.

The Renison mine predominantly applies up-hole benching and open stoping mining methods with (in some cases), post fill and cemented rock fill to fill voids. The weighted average mining dilution is 14% at zero grade. Minimum widths for underground development are 4.5m and for stoping minimum widths are 2.2m.

RENISON TAILINGS RETREATMENT (RENTAILS) PROJECT
The objective of the Rentails Project is to re-process the estimated 22.5 Mt of tailings at an average grade of 0.44% tin and 0.23% copper from the historical processing of tin ore. The current tailings dams have a Mineral Resource containing approximately 104,000 tonnes of tin and 53,000 tonnes of copper (refer to ASX announcement dated 30 January 2020).


Crushing and Grinding


Processing

  • Desliming
  • Dewatering
  • Centrifugal concentrator
  • Gravity separation
  • Flotation
  • Acid tank leaching
  • Magnetic separation

Source: Subscription required

Summary:

The underground mine operates a primary crushing system before the material is transported to the surface through a shaft. Once there, it enters the pre-concentration plant, where it undergoes a three-stage crushing, screening and cleaning process. The particles are split into two fractions – 10-25 mm and 25-60 mm – which are fed into two TOMRA XRT sorters. The output consists of two streams: the product, which is transferred to the wet plant, and the waste, which is fed into a TOMRA EM sorter to separate acid-forming sulphides from this waste stream.

In the wet plant, the product goes through primary grinding followed by bulk sulphide flotation. The tailings are processed downstream to concentrate the cassiterite tin mineral through gravity concentration; gravity tails are further treated via desliming and tin flotation. The combined concentrates are fed to a leaching circuit to remove carbonate minerals. After a final wash stage, the concentrate is de-watered and dispatche ........

Recoveries & Grades:

CommodityParameter2020201920182017
Tin Recovery Rate, %  ......  Subscription required  ......  Subscription required73.374
Tin Head Grade, %  ......  Subscription required  ......  Subscription required1.251.31

Production:

CommodityUnits20212020201920182017
Tin t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required6,7407,065
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2020201920182017
Ore tonnes mined  ......  Subscription required797,980 t802,348 t739,367 t
Tonnes processed  ......  Subscription required745,184 t732,484 t725,629 t
Subscription required - Subscription is required.

Reserves at March 31, 2021:
Cut-off grade of 0.7% Sn. Except for part of the resources, which belongs to Rentails Project, where Cut-off Grade of 0.0% Sn.

CategoryTonnage CommodityGradeContained Metal
Measured 25.7 Mt Tin 0.53 % 136 kt
Measured 25.7 Mt Copper 0.22 % 57.2 kt
Indicated 14 Mt Tin 1.65 % 231 kt
Indicated 14 Mt Copper 0.19 % 26.4 kt
Inferred 2.47 Mt Tin 1.59 % 39.1 kt
Inferred 2.47 Mt Copper 0.23 % 5.57 kt
Total Resource 42.1 Mt Tin 0.96 % 406 kt
Total Resource 42.1 Mt Copper 0.21 % 89.2 kt

Commodity Production Costs:

CommodityUnits20212020201920182017
All-in sustaining costs (AISC) Tin AUD  ......  Subscription required ^  ......  Subscription required  ......  Subscription required 16,559 / t 18,561 / t
C1 cash costs Tin AUD  ......  Subscription required  ......  Subscription required 11,814 / t 11,838 / t
All-in costs Tin AUD  ......  Subscription required  ......  Subscription required 21,034 / t
^ Guidance / Forecast.
Subscription required - Subscription is required.

Financials:

Units20212020201920182017
Capital expenditures (planned) M AUD  ......  Subscription required
Sustaining costs M AUD  ......  Subscription required  ......  Subscription required22  
Capital expenditures M AUD  ......  Subscription required  ......  Subscription required42.7   23  
Revenue M AUD  ......  Subscription required  ......  Subscription required163.9   168.7  
Gross profit M AUD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 21, 2021
....................... Subscription required ....................... Subscription required Subscription required Jul 21, 2021
....................... Subscription required ....................... Subscription required Subscription required Jul 21, 2021
....................... Subscription required ....................... Subscription required Subscription required Jul 21, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Press Release 2017
Quarterly Report 2017
Year-end Mineral Reserves 2017
Annual Report 2011
Subscription required - Subscription is required.

News:

NewsDate
GR Engineering secures work around the country November 3, 2021

Aerial view:

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