The Southstock Division is located in the province of Mpumalanga, South Africa, on the high plateau grasslands of the Middleveld. The Southstock Division comprises the South Witbank, Middelburg, Douglas, and Tavistock collieries.
Southstock is part of the Witbank Coalfield, the biggest coal producing area in South Africa and is the where the country’s biggest power stations are situated. The area has well developed infrastructure as a result of its long mining history.
Bituminous coal is mined at Southstock from the No 5, No 4 and No 2 coal seams using a combination of underground and opencast mining methods.
The complex currently has two washing plants, both producing a high quality thermal coal for the export market and a lower quality secondary product for the local power utility. A new plant is under construction for the newly commissioned Southstock 5 seam opencast operation that will produce export thermal coal and inland metallurgical coal.
All the operations in the Southstock complex are 100% owned by Xstrata South Africa, except for the Douglas and Middelburg mines which are operated under a joint venture with BHP Billiton (Xstrata 16%).