Billionaire oilman Harold Hamm believes North Dakota’s oil reserves are double the federal government’s estimates. Hamm was the keynote speaker Monday at an energy conference in Bismarck. He said the U.S. Geological Survey’s estimate of 4.2 billion barrels of…

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North DakotaBismarck North DakotaUnited StatesUnited States Geological SurveyOil reserves

Original post:
Oilman says ND reserves could be double estimates