World's Biggest Miners Want More Copper But Nobody's Selling

It’s the mining world’s biggest dilemma: everyone’s hunting for copper deals, but even the richest producers just can’t pull the trigger. The industry has deep pockets for deals right now -- Rio Tinto Group may end the year having raised $8.5 billion from asset sales and rivals like BHP Billiton Ltd. and Glencore Plc are churning out massive profits.