keywords: bhp miner copper billiton ore
text: BHP Billiton approves \$1.6 bln copper, iron ore projects MELBOURNE - BHP Billiton Ltd./Plc. (BHP.AX: Quote, Profile, Research) (BLT.L: Quote, Profile, Research) , the world #39;s biggest miner, has approved a \$990 million copper project in northern Chile and a \$575 