South African coal exports from Richards Bay Coal Terminal fell to 4.01 million tonnes in June from 4.6 million in May, exporters said.
Harmony has shut down the Joel mine in the Free State for up to six weeks to carry out repairs and modifications in its North Shaft.
UPDATED - Brazilian resource major Vale is to invest $400m on development of the Konkola North copper mine in Zambia which it owns through a joint venture with African Rainbow Minerals.
UK institution Numis Securities reckons First Quantum Minerals has been "shaken down" in the DRC but still rates the company as a strong buy because of its other assets.
Aquarius Platinum said its 4 shaft at the Marikana mine near Rustenburg could be suspended for two weeks cutting output by up to 2,000 ounces.
The government of the Democratic Republic of Congo has claimed First Quantum Minerals has been conducting a smear campaign against it.
Gold has fallen further below $1 200/oz in Europe, extending the previous session's losses, as a report that China will not make gold a major part of its portfolio undermined sentiment.
Mining giant Xstrata says it will invest $1.47bn in developing a southern Peru copper mine, a move aimed at extending the life of its existing operations in the region.
Zimbabwe's finance minister says a blockade on diamond exports is effectively 'punishing the people of Zimbabwe', and that it should be dropped.
Aquarius Platinum has suspended production at its Marikana mine following the death of five miners contracted through Murray & Roberts.