Teck shares in the red on Q2 earnings miss

Shares down by a third after London-listed miner pays $900m for Russian copper project that will take another $5.5 billion to build.

Researchers want to use a type of analysis commonly employed in understanding Facebook connections.

BHP said final wage offer rejected on Thursday was "best collective labor contract at a private mine in the country."

EU antitrust regulators on Wednesday voiced concerns about German Wieland's bid for copper smelter Aurubis' flat-rolled products business, saying the deal may hurt competition.

Workers at BHP Billiton Ltd's Escondida mine in Chile, the world's biggest copper mine, have voted to reject a company wage offer and go on strike.

Company said first-half profit grew 12% to $4.42 billion, below the $4.53 billion forecast by analysts.

The main union at Chile's Caserones mine has rejected operator Lumina Copper's final contract offer and workers have approved strike action.

Glencore is the world’s No. 1 cobalt miner, while Congo is the largest producer of the key component for batteries that power electric vehicles.

BHP Billiton last week agreed to sell its U.S. shale oil and gas assets for $10.5 billion, while Rio Tinto appears on track to exit its troubled investment in the giant Grasberg copper and gold mine in Indonesia for about $3.5 billion.