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South Africa
Dorstfontein Mine (Katlego Operation)

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 Location:
30 km NW from Bethal, South Africa

  Address:
Dorstfontein West Regional Offices. Dorstfontein Farm 71 IS, R57
Private Bag X5007
Kriel
South Africa
2271
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
  • Bord-and-pillar
Production Start...
Mine Life16 years (as of Jan 1, 2020)
Dorstfontein Coal Mine West & Dorstfontein Coal Mine East are part of the Katlego Operation (formerly Exxaro Coal Central Complex).

Production and financial data are not available since 2021.


Owners

Source: p. 86
CompanyInterestOwnership
Mmakau Mining (Pty) Ltd 26 % Indirect
Overlooked Colliery Proprietary Ltd 74 % Indirect
Dorstfontein Coal Mines (Pty) Ltd (operator) 100 % Direct
On 8 April 2021, Exxaro signed a sales and purchase agreement with Overlooked Colliery Proprietary Limited disposing of the ECC operation. All conditions precedent to the sales and purchase agreement were fulfilled and the transaction became effective on 3 September 2021.

Contractors

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Deposit Type

  • Sedimentary


Summary:

Coal measures of the Highveld and Witbank coalfields are hosted in the Ecca Group, which includes the Vryheid and Volksrust coal-bearing formations. All coal seams in the ECC area are hosted in the Vryheid formation which ranges in thickness from 80m to 300m. There are five major coal seams present in the area, named from the base upwards as S1, S2, S3, S4 and S5.

A granitic basement high, which forms part of the Smithfield Ridge and is referred to below as the Central plateau, divides the DCM complex into two separate geological domains and the western and eastern limbs can be found on either side of this plateau. S1 is only developed in the central portions of the paleo-valleys, ranging in thickness from 0.1m to 2.5m. Underground extraction of this seam is considered uneconomic due to its highly variable thickness, inferior quality, isolated occurrence and coal devolatilisation. In the DCM complex, seam splitting is generally a provenance of detrital material resulting largely from the proximity of the seam to the Smithfield Ridge and, as a result, the S2 and S4 are further subdivided into S2L, S2U and S4L and S4U, respectively.

S2L is thinnest over palaeo-highs and thickest over troughs of palaeo-valleys. Two S2L thickness domains exist in the complex. In the west (DCMW), seam thickness ranges from 0.1m to 5m and, in the east (DCME) from 0.2m to 6.0m. In the north of DCMW, the S2L exists as a single coal horizon, generally devoid of stone partings. ........


Mining Methods

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


Summary:

The complex covers a total rights area of 7 892ha comprising the underground Dorstfontein West mine and opencast and newly developed underground mine at Dorstfontein East mine. Seams being exploited are mainly S4 divided into S4 upper (U) and S4 lower (L) and S2 divided into S2U and S2L. The Dorstfontein West operation is exploiting the S4L through an incline development from the historical S2 workings with three production sections. A new development at Dorstfontein East is the implementation of an underground mine exploiting S2 through two adits accessed from one of the open pits. Dorstfontein East is the only opencast mine in the ECC stable targeting primarily S2 and S4. However, where thicker than 1.0m S5, S3 and S1 are present, they are also extracted. Mining activities use a truck-and-shovel method to expose and extract coal.


Crushing and Grinding


Processing

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Summary:

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Production:
2021 production data is reported for the period January 1 to September 3th 2022.

CommodityUnits202120202019
Coal (thermal) kt  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as clean coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20202019201820172016
Coal tonnes mined  ......  Subscription required3.48 Mt of ROM coal2.89 Mt of ROM coal3.02 Mt of ROM coal3.3 Mt of ROM coal
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Reserves at December 31, 2020:

CategoryTonnage Commodity
Proven 50.9 Mt Coal (thermal)
Probable 30.1 Mt Coal (thermal)
Proven & Probable 81 Mt Coal (thermal)
Measured 175.6 Mt Coal (thermal)
Indicated 121.4 Mt Coal (thermal)
Inferred 53.3 Mt Coal (thermal)
Total Resource 350.2 Mt Coal (thermal)

Financials:

Units20202019
Revenue M ZAR  ......  Subscription required  ......  Subscription required
After-tax Income M ZAR  ......  Subscription required  ......  Subscription required
Operating Cash Flow M ZAR  ......  Subscription required  ......  Subscription required



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 13, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 13, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
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................................... Subscription required 2020
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................................... Subscription required 2019
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Technical Report 2017
Year-end Mineral Reserves 2017
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