Overview
| Status | Closing / Closed |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Processing |
|
Strathrae is no longer operational. The mine is in closure. |
Source:
p. 38
NBC (Pty) Ltd, is owned by UCEHSA (49%) and by Ndalamo (51%). NBC acquired 100% of the North Block Complex asset from Exxaro in March 2018 for an acquisition price of R170 million and a bank guarantee of 10% of the value has been delivered to Exxaro.
Summary:
The coal measures of the North Block Complex occur on the eastern edge of the Witbank coalfield, within the Permian-age Vryheid formation of the Ecca Group in the Karoo Sequence. The Witbank coalfield is situated in the northern part of the Main Karoo basin and extends about 190km west-east between Brakpan and Belfast and about 60km north-south between Middelburg and Ermelo.
The main Karoo Basin:
- Was filled between the Late Carboniferous and Middle Jurassic periods;
- It is lithostratigraphically subdivided into the Dwyka, Ecca and Beaufort Groups, succeeded by the Molteno, Elliot and Clarens Formations and the Drakensburg Formation (volcanics);
- The coal bearing Ecca Group has been divided into three sub-units: the Pietermaritzburg; Vryheid and Volksrust Formations.
The Witbank Coalfield:
- The coal-bearing Vryheid Formation attains a thickness of 70m to 200m in the Witbank Coalfield;
- Here the Vryheid Formation consists of five coarsening-upward sequences with coal seams associated predominantly with the coarser grained fluvial facies at the top of each sequence;
- The No. 5, 4, 2 and 1 coal seams are of economic interest.
Summary:
Strathrae’s surface operation mines the No.2 Seam using the truck and shovel mining method. ROM coal from the underground operations is transported to the plant by a conveyor belt. The thermal coal and high grade coal plants each have a capacity of 300tph. Strathrae’s plant, with 130ktpm capacity, is a beneficiation plant producing export quality coal.
Source:
Reserves at December 1, 2015:
| Category | Tonnage | Commodity |
|
Measured
|
5 Mt
|
Coal (thermal)
|
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