Brazil's government will revise a decree that opened up a vast mineral reserve in the Amazon rainforest to mining responding to overwhelming criticism.

Cash and shares deal aims to expand Toromont's network of heavy equipment dealers in eastern Canada.

Two more remain missing after they were trapped underground following an earth tremor last week.

During winter and summer, power companies' coal inventories must be five to 10 days above normal levels.

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.

Power has been restricted due to a dispute over new, higher tariffs.

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).

COMEX stocks are the third, often forgotten component of the global copper inventory picture.

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.

Prices for cobalt, a key ingredient in lithium-ion batteries for electric vehicles, have spiked 83 percent this year.