But scientists have not ruled out blasting as a cause for the country-wide quake last week as the Council for Geoscience investigates further.
The Labour Court has handed down a final order preventing Amcu, a minority union on the gold mines, from embarking on a strike.
Allegations of water pollution by mining operations will see the ombud probe top mining companies like Glencore Xstrata and AngloGold Ashanti.
The former labour minister and reserve bank governor may be planning a return to politics as he steps down as AngloGold Ashanti's chairperson.
Gold’s decline has resulted in thousands of job losses and closed mines like Blyvoorzicht, which has left behind miners who can only cling to hope.
A South African company has begun work on the Kibali mine in the DRC, set to be one of the biggest mines in Africa upon completion.
The rising gold price has boosted AngloGold Ashanti's headline earnings for the first quarter in four.
Former AngloGold Ashanti chief executive Bobby Godsell has called for a ban on garnishee orders.
Asset managers have advised mining companies to reign in the colossal salaries being awarded to chief executives.
President Jacob Zuma has urged parties in the gold mining sector to reach a wage agreement soon.
Union leaders have warned that mine owners' handling of pay talks could provoke violence in Tuesday's strikes in the gold sector.
Gold producers and labour groups appear too far apart in pay talks to reach a settlement, according to the majority union.
The gold producer plans to cut 40% of its management positions to reduce costs in the face of a declining gold market.
Bruising wage negotiations between goldminers and workers look to have stalled after unions declared an official wage dispute.
Another ratings agency has cut gold giant AngloGold Ashanti's rating following a plummet in the precious metal's price.
AngloGold Ashanti has appointed Srinivasan Venkatakrishnan as its chief executive with immediate effect, says the company.
AngloGold Ashanti has been charged with contaminating water and "ongoing pollution" in Stilfontein by the Federation for Sustainable Environment.
NUM officials and Cosatu general secretary Zwelinzima Vavi were pelted with stones by some protesters at AngloGold Ashanti's mine near Orkney.