Oil Timeline By webster_chris9 Jan 1, 1951 North Dakota First O il Boom Mar 24, 1989 Exxon Valdez Apr 20, 2010 BP oil spill Jun 30, 2011 Legacy Fund Aug 1, 2013 Flaring Legislation Oct 15, 2013 Largest oil spill on U.S soil Dec 30, 2013 Casselton Oil Spill