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USGS: 7.4B barrels of oil possible in ND, Mont

Associated Press: Government data released Tuesday show that 7.4 billion barrels of oil could be recovered from two massive shale formations spanning parts of the Dakotas and Montana, nearly double the amount previously estimated for the region. The new number from the U.S. Geological Survey is based on data largely from oil company and state drilling records. But unlike the agency's 2008 estimate, it includes more than 3 billion barrels of oil believed held in the Three Forks formation, which is directly below...