Aurora Empowerment Systems says the Grootvlei mine would double its capacity to pump acid mine water, possibly as early as Friday.
DRDGold believes efforts to make it pay more to treat mine water containing dangerous acids was unconstitutional and that it would fight the matter vigorously.
A one third improvement in ferrochrome prices have helped Merafe Resources back into a first half profit.
The World Bank's Inspection Panel has confirmed that it is investigating the awarding of the bank's $3.75bn loan to South African power utility Eskom.
The Xstrata/Merafe chrome joint venture will invest about R1bn in a new chrome pelletising plant to be built at the group's Rustenburg ferrochrome smelter.
Kinross has bid $7bn in paper for Red Back Mining in a proposal that gives the Canadian firm access to gold mines in Ghana and Mauritania.
The June quarterly reporting season kicks off on Thursday and analyst expectations are high for better numbers all round from the SA gold miners.
Recovering copper prices will boost Zambia's economy, says Imara Africa Securities.
Randgold Resources has revised downwards its production guidance from its Loulo mine in Mali following a quarter the group described as "difficult".
The Bakgatla Tribe has taken legal action against Platmin and Barrick Gold over the Sedibelo transaction apparently in an attempt to improve the terms of the deal.