BHP's Dalla Valle talks global outlook for petroleum, coal investments

As policymakers in the United States weigh the merits of a shift in energy export policy, BHP Billiton Ltd. remains bullish on the prospects of exporting crude oil. During today's OnPoint, Dean Dalla Valle, chief commercial officer at BHP Billiton, explains his company's outlook for shale oil, coal and copper investments in the U.S. and around the globe. He also discusses BHP's shale strategy following a 40 percent reduction in the number of operational rigs in the United States.