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BISMARCK, N.D. • North Dakota Attorney General Wayne Stenehjem has obtained arrest warrants for two Utah men he says were unlicensed contractors working at a Dickinson construction site where a fatality occurred.

Stenehjem says Kevin Parkin and Clint Petersen have failed to cooperate with officials investigating the December 2011 worker death that occurred when a water and sewer pipe trench caved in at a home construction job site. The victim was identified as Casimiro Medina, also of Utah.

Stenehjem says a third contractor, from Idaho, cooperated with the investigation and paid a $2,000 fine for operating without a license.