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BISMARCK, N.D. - The Occupational Safety and Health Administration is investigating three workplace deaths in western North Dakota.
Mountrail County Sheriff Ken Halvorson says two men were killed Monday when they fell 250 feet from a cellphone tower.
Halvorson says 42-year-old Namon Smith of Chattanooga, Tenn., and 25-year-old Zachary Roberts of Lakeland, Ga., were adding structural supports to the 300 foot tower when one man fell and struck the other man, causing him to fall.
Halvorson says both workers were wearing safety harnesses and hard hats.
In a separate incident, Watford City police reported a death allegedly related to workplace chemicals at Power Fuels.
Power Fuels attorney Alicia Brenna says the worker died in his home and that the investigation is ongoing.
Authorities have not released the man's name.