FILE - In this Oct. 11, 2013 file photo, cleanup continues at the site of an oil pipeline leak and spill north of Tioga, N.D. North Dakota, the nation’s No. 2 oil producer behind Texas, recorded ... more 
FILE - In this Oct. 11, 2013 file photo, cleanup continues at the site of an oil pipeline leak and spill north of Tioga, N.D. North Dakota, the nation’s No. 2 oil producer behind Texas, recorded nearly 300 oil pipeline spills in less than two years, state documents show. None of them were reported to the public. According to records obtained by The Associated Press, the pipeline spills, many of them small, are among some 750 “oil field incidents” that have occurred since January 2012 without public notification. (AP Photo/Kevin Cederstrom, File) less 
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Associated Press | Photo By Kevin Cederstrom, File
Fri, Oct 25, 2013 1:14 PM EDT