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Botswana
Khoemacau (Zone 5) Mine

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 Location:
77 km SW from Maun, Botswana

  Address:
Botswana Innovation Hub, Science & Technology Park, Icon building, Bar 3 Level 02, Block 8 Industria
Gaborone
Botswana
Phone  ...  Subscription required
Fax+267-393-1008
WebsiteWeb
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Copper
  • Silver
Mining Method
  • Longhole open stoping
Production Start...
Mine Life2040


Owners

Source: p. 9
CompanyInterestOwnership
Resource Capital Funds 11.9 % Indirect
Cupric Canyon Capital, LLC 88.1 % Indirect

Contractors

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Deposit Type

  • Sediment-hosted
  • Breccia pipe / Stockwork
  • Stratabound


Summary:

Zone 5 and the adjacent deposits are characterised as structurally controlled, sediment hosted strata-bound copper-silver deposits.

Zone 5 has a deposit strike length of 4.2km with mineralisation dipping at 56 degrees to the south-east over an average thickness of 10m. Mineralisation is situated in the hanging wall sequence, 30m above the contact between the D'Kar Formation and Ngwako Pan Formation. Mineralisation is sub-parallel to lithology and typically cross-cuts host units from the lower D’Kar limestone unit in the south-west to the carbon rich siltstone unit and interbedded alternating siltstone and sandstone unit toward the north-east. The host rock assemblage is sandwiched between two competent sandstone units; the footwall Ngwako Pan quartzite sandstone and the hanging wall Marker sandstone. The down dip extension of mineralisation has been drilled to a maximum depth of 1,200m vertically below surface. The deposit remains open at depth (down dip) and partially along strike.

Mineral boundaries were interpreted to distinguish areas that comprised overburden, oxide plus sulphide minerals and sulphide-only assemblages. The near surface mineralised zone was identified as a transitional sulphide zone that contained both oxide and sulphide minerals. The boundary between this zone and the sulphide only undulates parallel to topography between 60 and 80m depth below the surface. This boundary was defined by acid soluble copper and total copper ratios, lo ........


Mining Methods

  • Longhole open stoping


Summary:

The Zone 5 mine is a bulk mechanised mine, designed for a total production rate of 3.65Mtpa through three (3) mining corridors, with a single mining corridor production rate between 1.0Mtpa to 2.0Mtpa. The ore is transported to surface via a truck haulage system. The mine design is based on a Long Hole Open Stoping (LHOS) mining method. The first section of the mine incorporates pillars and no pastefill, and then as depth increases pastefill will be used to improve overall resource recovery.

Stope production has been designed around the use of 9m3 (21 tonne) loaders and 60 tonne haul trucks. In the mining areas, in specially designed truck loops, the loaders transfer the ore from the ore passes to the trucks. Given the current depth of the known mineral resource, trucking was deemed the most practical and the least capital-intensive option. From the loading points, the trucks travel up the decline(s) to the surface for dumping of the ore at the Run Of Mine (ROM) pads.

Given that the orebody has a strike length of more than 4km, it necessitated dividing it up into mining corridors due to the mining method selected, with twin decline systems dedicated to servicing each corridor. (the North Corridor starts as single decline.) The twin decline layout allows for more than 1,000m coverage of strike extent of the orebody, while offering multiple orezone attack points, highly productive layouts, and significant redundancy.

Surface access, through unco ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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^ Guidance / Forecast.

Production:

CommodityUnits2022
Copper kt  ......  Subscription required ^
Silver M oz  ......  Subscription required ^
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.

Operational Metrics:

Metrics2022
Annual mining capacity  ......  Subscription required
Annual milling capacity  ......  Subscription required
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Reserves at June 30, 2021:
Reserves prepared using $3.0/Ib Cu and $17.8/Oz Ag.
Resources reported at c.1% Cu cut-off.

CategoryTonnage CommodityGrade
Proven 11 Mt Copper 2.19 %
Proven 11 Mt Silver 20.8 g/t
Probable 22.9 Mt Copper 1.95 %
Probable 22.9 Mt Silver 19.2 g/t
Proven & Probable 34 Mt Copper 2.03 %
Proven & Probable 34 Mt Silver 19.7 g/t
Measured 16.5 Mt Copper 2.4 %
Measured 16.5 Mt Silver 22.2 g/t
Indicated 26.2 Mt Copper 2.17 %
Indicated 26.2 Mt Silver 21.1 g/t
Inferred 49.6 Mt Copper 2.05 %
Inferred 49.6 Mt Silver 22.6 g/t
Total Resource 92.4 Mt Copper 2.15 %
Total Resource 92.4 Mt Silver 22.1 g/t

Financials:

Units2021
Capital expenditures M USD  ......  Subscription required
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Heavy Mobile Equipment as of May 31, 2022:
HME TypeModelLeased or
Contractor
Jumbo ....................... Subscription required Leased
Jumbo ....................... Subscription required Leased
Load-Haul-Dump (LHD) ....................... Subscription required Leased
Truck (haul) ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2019
................................... Subscription required 2019
Press Release 2015
Press Release 2015
Subscription required - Subscription is required.

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