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Australia
Kanowna Belle Mine (Kalgoorlie Operation)

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 Location:
20 km NE from Kalgoorlie, Western Australia, Australia

  Address:
Level 1, 388 Hay Street,
PO Box 2008
Subiaco
Western Australia, Australia
6008
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Fax+61-8-6188-2111
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  • Overview
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  • Geology
  • Mining
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  • Production
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  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Longhole open stoping
  • Paste backfill
Production Start...
The Kanowna Belle Operation includes one underground production mine (Kanowna Belle mine).


Owners

Source: p. 245
CompanyInterestOwnership
Northern Star Resources Ltd. 100 % Indirect
The Mining Leases and most of the surrounding tenement holdings are 100% owned by Northern Star (Kanowna) Pty Limited, a wholly owned subsidiary of Northern Star Resources Limited.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Porphyry


Summary:

Kanowna Belle is located within the Kalgoorlie Terrane, one of a number of elongate, broadly NNW-SSE striking structural-stratigraphic late Archaean greenstone terranes of the Eastern Goldfields of Western Australia. The Kanowna Belle gold mine is located close to the centre of the NNW-SSE trending, greenstone-dominated Boorara Domain, the eastern most subdivision of the Kalgoorlie Terrane.

The Kanowna Belle deposit can be categorised as a refractory, Archean lode-gold type deposit. The orebody is comprised of several ore shoots, including the large Lowes Shoot, and several smaller lodes including Troy, Sims, Hilder, Hangingwall and Footwall shoots controlled by sets of structures of various orientations oblique to Lowes.

Mineralisation is mainly hosted within a large porphyritic granodiorite body (Kanowna Belle Porphyry) that has intruded a sequence of sedimentary and volcaniclastic rocks. A zone of intense structural disruption (Fitzroy Shear Zone) separates the deposit into hangingwall and footwall structural domains and is the primary control on gold distribution. Gold mineralisation is locally associated with quartz-carbonate stockwork veins, breccia zones, sulphide-quartz-carbonate stringers and sheeted vein arrays. The generally tabular enveloping surface to mineralisation dips steeply to the south, has a high plunge to strike ratio and remains open at depth.

Lowes contains some 80% of known gold mineralisation and strikes ENE, dips ste ........


Mining Methods

  • Longhole open stoping
  • Paste backfill


Summary:

The Kanowna Belle gold deposit is mined by longhole stoping and underhand longhole bench stoping with paste fill methods. This mining method was selected to minimise the impact of mining induced stress on the underground operations by geotechnical driven mining sequences and a fill system integral in the mining cycle. The mining method used at Kanowna Belle underground is called longhole open stoping (LHOS). Mining of the LHOS commences with the development of drives (tunnels) on each level and the sides of these are supported by cement grouted roof bolts, mesh and shotcrete. These drives delineate the boundary of the stope. Each LHOS is 15-30m wide, up to 50m long and 120m high. Depending on size each stope may contain between 20,000 to 50,000 tonnes of ore. The Kanowna Belle gold mine has been extracted down to a depth of 1,301m below surface with a possible extension into lower E block, further development of the Troy and Sims loads located in the hangingwall, higher in the mine. The Velvet deposit sitting 500m west of the main Lowes ore body is also a substantial part of the production and open a depth. All mining operations are operated by NSMS, excluding diamond drilling which is contracted. The mining method at Kanowna is a form of modified open stoping which is sequenced and driven on a stope-by-stope basis by geotechnical considerations. The open stopes are backfilled with paste utilising tailings from the Kanowna Belle Mill. The ore is accessed on a level spa ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits20172016201520142013
Gold oz 109,23996,36398,042111,758134,000
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics202220212017
Annual processing capacity  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required1 Mt
Tonnes processed  ......  Subscription required  ......  Subscription required1 Mt
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Reserves at March 31, 2022:
Kanowna Belle mineral resource estimate has been reported at a 1.26 g/t cut off within 3.0 m minimum mining width (excluding dilution) MSO’s using a $A2,250/oz gold price.

CategoryTonnage CommodityGradeContained Metal
Proven 2,606 kt Gold 2.6 g/t 220 koz
Probable 7,201 kt Gold 2.5 g/t 569 koz
Proven & Probable 9,807 kt Gold 2.5 g/t 789 koz
Measured 4,828 kt Gold 3.2 g/t 502 koz
Indicated 18,530 kt Gold 2.6 g/t 1,575 koz
Inferred 14,613 kt Gold 2.1 g/t 971 koz
Total Resource 37,971 kt Gold 2.5 g/t 3,047 koz


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment as of July 30, 2019:
HME TypeModelQuantity
Drill ....................... Subscription required ....................... Subscription required
Drill (long hole) ....................... Subscription required ....................... Subscription required
Drill (long hole) ....................... Subscription required ....................... Subscription required
Explosives Charger ....................... Subscription required ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (service) ....................... Subscription required ....................... Subscription required
Truck (service) ....................... Subscription required ....................... Subscription required
Truck (water) ....................... Subscription required ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 29, 2022
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Corporate Filings & Presentations:

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