Tailings dams are commonly used by mining firms to store waste remnants of ore.

Prominent Hill is forecast to produce up to 70,000 tonnes of copper and 135,000 ounces of gold in fiscal 2021.

Workers at Caserones went on strike at the start of August after collective wage negotiations and government-led mediation foundered.

US hiring downshifted abruptly in August, complicating a potential decision by the Federal Reserve to begin scaling back monetary support by year-end.

The bill would slap new fees on oil and mining companies and effectively block the proposed Resolution Copper mine in Arizona.

Candelaria owns two advanced exploration projects in Mexico.

Deal with world's top copper producer Codelco ends prolonged strike that began in mid-August.