Rio Tinto’s Mongolia copper problems highlight frontier country risks

Indicated resources at San Matías are now estimated at 94.9 million tonnes

The Tsilhqot’in have turned back a work crew that had planned to move in heavy equipment to conduct drilling for the New Prosperity mine.

The Toronto-based miner acquired the 4,170-hectare St. Laurent project in March.

BHP's Escondida continues to lead the way as the top copper operation on the planet.

Last week's accident, which briefly sent Glencore's shares tumbling 7%, underscored foreign investors' exposure to illegal mining activity on their properties.

In a report on Monday, the commodities giant said it is reviewing all entities located in tax-haven jurisdictions.

Over the next year, Moody’s predicts prices will remain below 2018 levels while rising costs will put price margins under pressure.

The world's largest publicly traded copper miner said it expected lower copper prices in the second quarter.

Last Thursday's tragedy ratcheted up pressure on companies to make changes to security and community outreach.