A federal report claims four safety violations led to an explosion which killed a Grand Island man last spring at the Green Plains ethanol plant near Wood River.
The Occupational Safety and Health Administration released on Monday the findings of its investigation into the April 17 explosion.
Jody Norgaard, 49, died from an explosion that happened while he was working on an ethanol stillage tank.
OSHA said sparks from a hand-held angle grinder used to cut bolts on the tank ignited fumes that had accumulated at the top of the tank and caused the explosion which killed Norgaard.
OSHA said Green Plains committed four safety violations which led to the explosion:
OSHA has proposed a total of $42,412 in fines for the violations.
According to OSHA regulations, Green Plains has 15 days to request a meeting with OSHA or to contest the findings and associated fines.