China will shut 6,000 non-coal mines in an effort to reduce mining accidents and deaths by 2020, the State Administration of Work Safety said in a five-year plan.
Rescue teams have been working to find the workers since the incident occurred at about 10.30 a.m. local time at its Kusasalethu mine near Cartonville, west of commercial hub Johannesburg.
Six out of 10 labourers toiling in southern Indian quarries for granite for tiles, fireplaces and kitchen counters around the world are working in dangerous conditions to repay huge loans, charities mapping the hidden supply chain said on Wednesday.
OZ would begin construction of its Carrapateena copper mine in Australia, the country's largest undeveloped copper project, which it estimated would cost A$916 million ($724 million).
Copper output in Congo, Africa's top producer of the metal, rose 15 percent year-on-year in the first half of 2017 to more than half a million tonnes, and cobalt production surged 27 percent to almost 40,000 tonnes, the central bank said.
South Africa's government welcomes the sale to a Swiss-based firm for $225 million, citing the jobs the sale could save, the department of mineral resources said on Wednesday.
Chinese coal imports from key supplier Australia chalked up year-on-year gains for the second straight month in July, customs data showed, as local output of the commodity eased amid a crackdown on illegal mining and pollution.