keywords: bhp billiton commodity doubled doubles
text: BHP Billiton 2nd-Half Net Doubles on Commodity Prices (Update2) Aug. 18 (Bloomberg) -- BHP Billiton, the world #39;s biggest miner, more than doubled second-half profit as Chinese demand boosted commodity prices. The company is considering returning as much as \$2 billion to investors, including share buybacks. 