The public has been kept in the dark about nearly 300 oil spills, and 750 oil field incidents since January 2012.
"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 was reported to the public, officials said.
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.
"That's news to us," said Don Morrison, director of the Dakota Resource Council, an environmental-minded landowner group with more than 700 members in North Dakota."