It will sell its newest mine to Harmony Gold for $300 million and another mine for 100 million rand ($7.4 million) to China's Heaven-Sent SA Sunshine Investment Company.
It expects an average global copper price of $2.95 per pound in 2018, a sharp upward revision from its mid-year estimate of $2.68, due to greater demand in China.
Canadian start-up EnviroLeach has created a new environment-friendly chemical process with the potential to transform precious metal extraction in the mining and electronic waste (e-waste) sectors.