According to Reuters, the explosion occurred at the Didion Milling plant, located about 80 miles northwest of Milwaukee, at around 11 pm Wednesday. 16 employees were working at the plant when the explosion occurred.
Several people sustained injuries in the explosion and resulting fire and were transported via helicopter and ambulance to local hospitals. Two people were able to escape unharmed, and two others remain missing.
Authorities are still investigating the cause of the explosion, and the identity of the deceased worker has not been released.
The following information was provided by the Occupational Safety and Health Administration (OSHA):