In an effort to receive more financial benefits from mining operations, the government's proposal will also require investors in the sector to get legislative approval before operating.
Together with reevaluating its previous multi-year guidance, the company is now reviewing the financial impact of the mine suspension to its longer term capital and exploration programs.
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.