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South Africa
Black Mountain Mine

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 Location:
98 km NE from Springbok, South Africa
  Address:
1 Penge Road, Northern Cape Province
Private Bag X01
Aggeneys
South Africa
8893
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Fax+27-54-983-9244
EmailEmail
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Zinc
  • Lead
  • Copper
  • Silver
Mining Method
  • Cut & Fill
  • Blast Hole Stoping
  • Longhole stoping
  • Backfill
Production Start...
Mine Life2025
Black Mountain Mining (BMM) operation comprises two underground mines – Deeps and Swartberg – with a processing plant. Deeps/Swartberg Processing plant produces Metal in Concentrates of copper, lead, and zinc, with silver as a by-product.

Production at Deeps is scheduled to cease in and around 2025. Plans are well advanced to expand Swartberg.

Black Mountain Iron Ore project (under construction) intends to recover iron ore (magnetite) from the BMM tailings on track. Best quality iron ore will be produced from the new plant with Fe grade >68%.

Owners

Source: p. 2
CompanyInterestOwnership
Employee Share Ownership Plan (the ‘ESOP’) 4.57 % Indirect
Exxaro Resources Ltd. 24.77 % Indirect
Vedanta Resources plc. 70.66 % Indirect
Black Mountain Mining Pty Ltd (operator) 100 % Direct

Contractors

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Deposit Type

  • Banded iron formation hosted

Summary:

The Aggeneys copper-lead-zinc-silver deposits occur in the Precambrian metavolcanic metasedimentary Bushmanland Group which forms part of the Namaqualand Metamorphic Complex. The Bushmanland Basin occupies an area measuring around 18,000km in the western half of the Namaqualand-Natal Mobile Belt.

Ore at the Black Mountain Mine is more copper-rich, in contrast to the other deposits to the east which are all more zinc-rich. This deposit comprises two superposed massive sulphide bodies namely the thicker Upper Ore Body (UOB) and a thinner Lower Ore Body (LOB). Both ore bodies, which also carry disseminated sulphides, are hosted in the banded iron formation. The iron formation horizons are both separated by and enveloped in northwest-dipping schist, which is overlain by a thick quartzite formation.

The UOB is comprised of three types of iron formation: magnetite quartzite, magnetite- amphibolite and barite-magnetite. Garnet-quartzite forms a halo around the UOB; it is locally enriched in copper (up to 3% copper (Cu)).

The LOB consists of baritic to quartzitic schist with disseminated sulphides which grades into magnetiteamphibolite. The footwall to the massive sulphide lenses is characterized by abundant sillimanite.

The dip is to the north at 55° (fifty-five degrees) near surface and varies from almost sub horizontal to 40° in the lower western portion of the ore bodies. The contacts of the massive sulphide ore with the host rock are ........

Mining Methods

  • Cut & Fill
  • Blast Hole Stoping
  • Longhole stoping
  • Backfill

Summary:

Production is generated from the Deeps and Swartberg mines. The Deeps mine is serviced by a vertical shaft and Swartberg is accessed through a decline. Total production rate is around 1.7Mtpa, 1.22Mtpa from Deeps and around 0.5Mtpa from Swartberg. This rate is expected to be maintained up to the end of the anticipated mine life in 2023.

The main method used is cut-and-fill but where the orebody permits, more massive mining methods such as blasthole and longhole stoping are used to mine stopes of 20m to 30m in height. All production stopes in the Deeps mine are backfilled.

Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityProductUnits2023202220212020201920182017
Lead / Zinc Metal in concentrate kt
Zinc Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Metal in concentrate t  ......  Subscription required  ......  Subscription required
Silver Metal in concentrate t  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
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Operational Metrics:

Metrics202320222021202020192018
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1,486,754 t1,611,301 t1,605,892 t
Annual mining capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required1.7 Mt of ore
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Annual milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required1.65 Mt
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Reserves at March 31, 2023:

CategoryTonnage CommodityGrade
Proven & Probable 55.5 Mt Zinc 0.67 %
Proven & Probable 55.5 Mt Lead 1.89 %
Measured & Indicated 79.7 Mt Zinc 1.1 %
Measured & Indicated 79.7 Mt Lead 2.1 %
Inferred 35.1 Mt Zinc 1 %
Inferred 35.1 Mt Lead 2.2 %

Commodity Production Costs:

CommodityUnits2023202220212020201920182017
Cash costs Zinc USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 0.59 / lb   0.51 / lb  
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Water Supply
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Heavy Mobile Equipment as of July 31, 2017:
HME TypeModelQuantity
Drill (long hole) ....................... Subscription required ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 23, 2023
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Staff:

Total WorkforceYear
Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Financial Review 2023
Integrated Report 2023
Integrated Report 2022
Other 2022
Other 2022
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Annual Report 2018
Annual Report 2017
Fact Sheet 2017
Other 2017
Other 2017
Annual Report 2016
Environmental Assessment 2013
Press Release 1991
Press Release 1985
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