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South Africa
Participating Coal Business (PCB) Operation (Impunzi Mine, Tweefontein Mine)

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 Location:
25 km S from Emalahleni, South Africa

  Regional Office:
29 Impala Road Chislehurston
Sandton
South Africa
2196
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  • Overview
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  • Mining
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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
  • Dragline
  • Bord-and-pillar
Mine Life12 years (as of Jan 1, 2022)
Participating Coal Business (PCB) refers to the Impunzi and Tweefontein operations.


Owners

Source: p. 91
CompanyInterestOwnership
African Rainbow Minerals Ltd. 20.2 % Indirect
Glencore plc. 79.8 % Indirect
Glencore Operations South Africa Proprietary Ltd. (operator) 79.8 % Direct
ARM (African Rainbow Minerals Ltd.) holds an effective 20.2% in PCB, Glencore Operations South Africa (GOSA) owns remaining 79.8%.

Governed by a supervisory committee with five Glencore representatives and three ARM representatives. Operational management contracted to Glencore.

Contractors

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Deposit Type

  • Sedimentary


Summary:

IMpunzi Complex
The iMpunzi Complex falls within the southern margin of the central portion of the Witbank-Springs Coalfield. The coalfield is underlain by pre-Karoo formations, mainly Bushveld felsite. Historic glaciation events resulted in the deposition of tillite (Dwyka Formation) over most of the area. Within the Karoo Sedimentary Sequence the Ecca Group rests on top of the Dwyka Formation. In the Witbank-Springs Coalfields the coal bearing Vryheid Formation occur at the bottom of the Ecca Group conformably to the underlying Dwyka Formation.

The Dwyka Formation consists of tillite, siltstone and sometimes a thin shale development. The Ecca Group consists predominantly of sandstone, siltstone, shale and coal. The Vryheid Formation in the Ecca Group contains five bituminous coal seams, numbered as No. 1 to No. 5 from bottom to top. The No. 2, No. 4 and No. 5 seams are the most economical coal seams to mine in the Witbank-Springs Coalfield.

Tweefontein Complex
The Dwyka Tillite is overlain by sediments of Ecca, Beaufort and Stormberg Groups. Coal measures are associated with the Vryheid Formation of the Lower Ecca Group of Permian age.


Mining Methods

  • Truck & Shovel / Loader
  • Dragline
  • Bord-and-pillar


Summary:

IMpunzi Complex
All opencast mining is undertaken using the strip mining method using draglines, and truck and shovel at the smaller open pits. All hard overburden (shale/sandstone) and coal are blasted using bulk explosives (heavy ammonium nitrate and fuel oil emulsion). The coal is transported by a fleet of trucks to the crushing and pillar screening plant.

Mpunzi North consists of the iMpunzi North Opencast (opencast dragline and truck and shovel operations in North and South pit) and iMpunzi Mini-pits (truck and shovel operations in the Phoenix, and Office pits). The Opencast Coal Resources include the No.1, No. 2 and No. 4 seams, whilst the Mini-pit involves only the No. 4 seam.

South Pit triangle reserves moved to iMpunzi East, VDD South Pit (-6.6Mt). Adjusted face positions and coal mined outside mine plan account for a reserve increase of 2.0Mt.

iMpunzi East consists of the iMpunzi East Opencast (opencast dragline and truck and shovel operations in the East pit). A large proportion of No. 2 seam and a small area of No. 4 seam have been previously mined by underground bord and pillar methods. The full seam is extracted through opencast mining methods – the lower zone of each seam was previously partially extracted by underground mining and the upper zone remains intact.

Tweefontein Complex
The Tweefontein North development includes all five seams present in the Vryheid Formation, however, only the No.1, No. 2, No. ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

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Production:

CommodityUnits2022202120202019201820172016
Coal (thermal) Mt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required171715
All production numbers are expressed as clean coal.
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Reserves at December 31, 2021:

CategoryTonnage CommodityMarketable Coal
Proven 230 Mt Coal (thermal) 142 Mt
Probable 11 Mt Coal (thermal) 5 Mt
Measured 1,180 Mt Coal (thermal)
Indicated 73 Mt Coal (thermal)
Inferred 40 Mt Coal (thermal)

Commodity Production Costs:

CommodityUnits2022202120202019201820172016
Site cash costs (produced) Coal (thermal) ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 330 / t   278 / t   272.6 / t  
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Financials:

Units2022202120202019201820172016
Capital expenditures M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 2,045   1,218   1,059  
Revenue M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 13,688   12,515   9,554  
Operating Income M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 5,099   4,831   1,965  
Pre-tax Income M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 3,817   1,243   -1,441  
After-tax Income M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 3,134   896   -1,040  
EBITDA M ZAR  ......  Subscription required  ......  Subscription required  ......  Subscription required 5,099   4,832   1,960  
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2022
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....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2022
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Corporate Filings & Presentations:

DocumentYear
Integrated Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Integrated Report 2018
Integrated Report 2018
Other 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Other 2016
Year-end Mineral Reserves 2016
Annual Report 2014
Other 2014
Annual Report 2013
Corporate Presentation 2013
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