In order to produce a few grams of gold, we must extract at least a tonne of rock from the ground, and the process of gold mining generates a large amount of waste, primarily in the form of waste rock or overburden. Other wastes generated by the gold mining process include chemical reagents such as cyanide, as well as waste oils from vehicles and machinery and domestic waste from the administration buildings, catering services and onsite accommodation.
Each mine has its own site-specific waste management plans which set out how, organic, inorganic and hazardous wastes should be handled, stored, separated, recycled or disposed to ensure all waste is responsibly disposed of. Our waste rock management procedures meet the requirements of all national laws and regulations and IFC performance standards. For example, geotechnical engineers are responsible for ensuring waste rock dumps are carefully designed and constructed to ensure stability.