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Landscape near Williston, North Dakota where there is a sharp rise in shale drilling for oil in the large Bakken Formation, Thursday, July 18, 2012. ..Photo by MATT NAGER

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USGS Release: 3 to 4.3 Billion Barrels of Technically Recoverable Oil Assessed in North Dakota and Montana’s Bakken Formation—25 Times More Than 1995 Estimate— (4/10/2008 2:25:36 PM)

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