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.
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.
