from google, re. billiton JV coal assets in south africa:
"located near the towns eMalahleni (Witbank) and Middelburg in the coalfields of the Mpumalanga Province, South Africa and consists of four primary coal mining operations, Khutala Colliery, Klipspruit Colliery, Middelburg Colliery and Wolvekrans Colliery, as well as the three processing plants of BECSA Coal Processing."