America's shale oil drillers are struggling to make a profit as crude prices slide. Highlighted today by BHP Billiton slashing $7 bn off the price of its US shale oil business Show more
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America's shale oil drillers are struggling to make a profit as crude prices slide. Highlighted today by BHP Billiton slashing $7 bn off the price of its US shale oil business Show more
The BBC's international radio station
