"According to one study by the United States Geological survey, 86 percent of oil reserves in the United States are the result not of what is estimated at the time of discovery but of the revisions and additions that come with further development."

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Source : Daniel Yergin (2011). “The Quest: Energy, Security, and the Remaking of the Modern World”, p.206, Penguin

Daniel Yergin

#Oil Quotes #Discovery Quotes #Development Quotes