Amplats earnings jump, warns against unsustainable wage hikes

The incident may revive concerns about safety at Sibanye, which last year suffered a spike in fatal accidents at its gold mines.

Recent drill results include 3.22 g/t platinum, 2.08 g/t palladium, 0.23 g/t gold, 0.57% copper and 0.19% nickel over 41.2 m.

Union leader Joseph Mathunjwa has never hesitated to go head-to-head with powerful CEOs in South Africa's mining industry, but now he may have to face down the government.

The increase should help bolster support from Lonmin investors, who still need to vote on the takeover.

Production dropped 6% in the quarter.

Power cuts implemented by Eskom, which supplies more than 90 percent of electricity in Africa's most advanced economy, pose a threat to miners.

Sibanye-Stillwater has revised its offer for Lonmin, with new terms that gave a valuation for the struggling platinum miner that was about $77m less than originally proposed.

AMCU, one of the largest trade unions in South Africa's mining sector, has thousands of members at gold and platinum mines.

After almost three years of rating the mining giant’s stock as overweight, JPMorgan downgraded it to neutral on Wednesday.