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Published November 10, 2010, 07:58 AM

Federal, state officials probe ND oilfield death

BISMARCK, N.D. (AP) — Federal and state regulators are investigating an incident in western North Dakota's oil patch in which one worker was killed and two others injured.

BISMARCK, N.D. (AP) — Federal and state regulators are investigating an incident in western North Dakota's oil patch in which one worker was killed and two others injured.

The state Public Service Commission and local agencies will be assisting the Pipeline and Hazardous Materials Safety Administration.

Authorities say 30-year-old Thomas Chojnacki, of Posen, Mich., died Monday afternoon. He was helping install underground electrical lines for an oil well site near Tioga when trench-digging equipment ruptured a natural gas line. Two other workers were taken to a Tioga hospital and later released.

Public Service Commissioner Brian Kalk says it appears workers didn't utilize North Dakota's "one-call" digging notification program. It gives contractors a toll-free number to call before digging to give affected utilities time to confirm the location of underground lines.

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