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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
Phone  ...  Subscription required
Fax+27-54-983-9244
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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 Life2023
Black Mountain Mining (BMM) is an operation located at Aggeneys in South Africa’s Northern Cape Province, operating two mining units (Deeps and Swartberg), as well as a processing plant producing copper, lead and zinc concentrates with silver as a by-product.

In 2021, Vedanta Zinc International (VZI) piloted a new waste-to value project at Black Mountain Mine (BMM) operations in Aggeneys, Northern Cape, South Africa in 2021. This is a project to recover iron ore (magnetite) from the BMM tailings. The first production of high-quality iron ore at Fe grade >68%, is expected towards September 2023.
Latest NewsIndian miner Hindustan Zinc's all-cash bid for Vedanta's assets lapses - sources     May 2, 2023

Owners

Source:
CompanyInterestOwnership
Employee Share Ownership Plan (the ‘ESOP’) 6 % Indirect
Exxaro Resources Ltd. 24.4 % Indirect
Vedanta Resources plc. 69.6 % Indirect
Vedanta owns a 69.6% stake in the operation, with Exxaro Resources, a leading B-BBEE company, holding 24.4%, and an employee stock ownership plan (ESOP) holding the remaining 6% stake.

Exxaro continues to evaluate its options to dispose of its 26% shareholding in Black Mountain following the suspension of the sale process in December 2020.

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:

CommodityProductUnits2022202120202019201820172016
Zinc Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required606365
Zinc Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required565859
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
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1,611,301 t1,605,892 t1,590,600 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 required
Subscription required - Subscription is required.

Reserves at March 31, 2022:

CategoryTonnage CommodityGrade
Proven & Probable 51 Mt Zinc 0.71 %
Proven & Probable 51 Mt Lead 2 %
Measured & Indicated 89.3 Mt Zinc 1.01 %
Measured & Indicated 89.3 Mt Lead 1.97 %
Inferred 36.1 Mt Zinc 0.9 %
Inferred 36.1 Mt Lead 2.2 %

Commodity Production Costs:

CommodityUnits202220212020201920182017
Cash costs Zinc USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 0.59 / lb   0.51 / lb  
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Heavy Mobile Equipment as of July 31, 2017:
HME TypeModelQuantity
Drill (long hole) ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Integrated Report 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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News:

NewsDate
Indian miner Hindustan Zinc's all-cash bid for Vedanta's assets lapses - sources May 2, 2023

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