Ground stability affected by gold mining in North West

Over 120 years of gold mining has significantly affected ground stability in the Klerksdorp, Orkney, Stilfontein and Hartebeesfontein, or KOSH region, in the North West.

A council for Geoscience study found that decades of groundwater dewatering, and rewatering associated with underground mining, along with the region's underlying dolomitic geology, have created long-term environmental and geohazard risks including sinkholes, ground subsidence and acid mine drainage.

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