by Sarah See
A worker was killed Thursday morning in an industrial accident in Milaca, Minn., according to CBS Minnesota.
Scott Armstrong, 41, of rural Swanville was killed while working on a large gravel conveyor belt system that was to be moved, according to the Mille Lacs County sheriff's office.
Armstrong was struck in the head by a large wheel while working as a crushing operator at a Knife River Construction Company gravel pit, authorities said.
Armstrong was pronounced dead, and a medical examiner will determine the exact cause of death, according to WCCO-TV.
Authorities are investigating the fatal incident, according to the Associated Press.
The construction company plans to turn the investigation over to the Mine Safety Health Administration, a Knife River spokeswoman said to the St. Cloud Times.