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Australia
Cannington Mine

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 Location:
194 km SE from Mount Isa, Queensland, Australia

  Address:

McKinlay
Queensland, Australia
4823
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Silver
  • Lead
  • Zinc
Mining Method
  • Longhole open stoping
  • Paste backfill
Production Start...
Mine Life7 years (as of Jan 1, 2022)
Cannington is one of the world’s largest producers of silver and lead and consists of an underground hard rock mine and surface processing facility, a road-to-rail transfer facility and a concentrate handling and ship loading facility at the Port of Townsville.


Owners

Source: p. 54, 158
CompanyInterestOwnershipInvestor's Info
South32 Limited 100 % Indirect
Cannington is 100 per cent owned by South32.

Contractors

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Deposit Type

  • Metamorphic hosted
  • Broken Hill-type (BHT)


Summary:

Cannington is a Broken Hill Type (BHT) silver-lead-zinc massive sulphide deposit hosted by Proterozoic age high-grade metamorphic lithologies of the Soldiers Cap Group, located in the Eastern Succession of the Mount Isa Block. Mineralisation is stratiform bound along the limbs of a tight isoclinal recumbent synform with an easterly dip and a southerly plunge. The core of the synform is composed of amphibolite with encompassing silver-lead-zinc sulphide mineralisation. The mineralisation has been divided into nine types based on textural, mineralogical and geochemical characteristics which assist in defining metallurgical performance.

The Cannington mineralisation is hosted within a 70 m to 90 m thick of interbedded garnetiferous psammite and basic volcanic units that enclose a fine to medium grained central amphibolite body up to 100 m thick. The psammite is itself intercalated with muscovite-sillimanite schist and enclosed by migmatitic quartzon feldspathic gneiss. Pegmatite horizons that are semi-conformable within the deposit sequence are thought to be predominantly the result of partial melts of clastic rocks within this package (Mark, 1993).

Structure
The psammite sequence is folded into a tight, northerly striking isoclinal recumbent fold that plunges to the south with limbs dipping between 40O and 70O to the east as the result of the second of four structural events (D1 to D4) described by Bailey (1998). Two major northwest trending D4 faults ........


Mining Methods

  • Longhole open stoping
  • Paste backfill


Summary:

Cannington consists of an underground hard rock mine and surface processing facility, a road-to-rail transfer facility and a concentrate handling and ship loading facility at the Port of Townsville.

In Q4 FY22 Cannington transitioned to 100 per cent truck haulage to bring product to the surface.

The underground mine is accessed via a single surface portal with a decline extending to a depth of 645m below surface. Stope production is conducted using the Long Hole Open Stoping (LHOS) with backfill mining method. The primary backfill method is paste fill with a supplementary use of ROM waste and ROM paste rock.

The stoping areas are accessed by sub-levels developed on a nominal 25 m vertical interval.

A number of ore passes, developed in ore, feed to a crusher loading level. Approximately two-thirds of the ore is crushed underground at the underground crushing station located at the base of the mining operation and hoisted to the surface. A 5.6 m diameter hoisting shaft extends to a depth of 650 m and is equipped with a tower mounted friction winder.

The balance of the ore is hauled directly to the surface via decline access, passes through a crushing plant and is stockpiled on the run-of-mine (“ROM”) ore stockpile.

Once stopes have been completely mined, they are backfilled with waste rock or paste. Paste fill is delivered from the paste plant to the underground workings for distribution via a conveyor syste ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Silver koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required12,49115,60321,393
Lead kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Equivalent kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as payable metal. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required2,495 kdmt2,355 kdmt3,036 kdmt
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required2,725 kwmt2,463 kwmt2,909 kwmt
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required3.4 Mt
^ Guidance / Forecast.
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Reserves at June 30, 2022:
Cut-off grade (Net smelter return in A$/t):
- Mineral Resources: UG Sulphide - 130, OC Sulphide - 58.
- Ore Reserves: UG Sulphide - 145.

CategoryOreTypeTonnage CommodityGrade
Proven & Probable In-Situ (UG) 17 Mt Silver 176 g/t
Proven & Probable In-Situ (UG) 17 Mt Lead 5.26 %
Proven & Probable In-Situ (UG) 17 Mt Zinc 3.07 %
Total Resource In-Situ (OP) 29 Mt Silver 101 g/t
Total Resource In-Situ (UG) 40 Mt Silver 172 g/t
Total Resource In-Situ (OP) 29 Mt Lead 3.18 %
Total Resource In-Situ (UG) 40 Mt Lead 4.93 %
Total Resource In-Situ (OP) 29 Mt Zinc 2.38 %
Total Resource In-Situ (UG) 40 Mt Zinc 3.14 %

Operating Costs:

Units20222021202020192018201720162015
Total operating costs ($/t milled) USD 133124113123150133145170

Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Growth Capital M USD  ......  Subscription required  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 51   36  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 584   768  
EBIT M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 183   308  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 230   364  
Subscription required - Subscription is required



Heavy Mobile Equipment:
HME TypeModelSizeQuantityLeased or
Contractor
Ref. Date
Drill ....................... Subscription required ....................... Subscription required Mar 11, 2015
Grader ....................... Subscription required ....................... Subscription required Leased Mar 11, 2015
Jumbo ....................... Subscription required ....................... Subscription required Mar 11, 2015
Loader ....................... Subscription required ....................... Subscription required Mar 11, 2015
Loader ....................... Subscription required ....................... Subscription required Mar 11, 2015
Loader ....................... Subscription required ....................... Subscription required Mar 11, 2015
Shotcreter ....................... Subscription required ....................... Subscription required Leased Mar 11, 2015
Truck (underground) ....................... Subscription required 55 t ....................... Subscription required Mar 11, 2015
Truck (underground) ....................... Subscription required 60 t ....................... Subscription required Mar 11, 2015
Truck (underground) ....................... Subscription required 63 t ....................... Subscription required Oct 22, 2020
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 13, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Fact Sheet 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Other 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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