The U.S. Chemical Safety Board says failure to follow proper chemical process safety management caused an explosion in West Virginia last year that killed two employees. One of the workers was hospitalized 41 days with burns before he died.
Recent statistics show OSHA continues to focus its inspections on specific problems, rather than conduct them randomly.
Defective welds likely caused the collapse of a tank last month, spilling about 2 million gallons of liquid fertilizer and injuring four people.
A fire and explosion at a plant in Iowa was caused by inadequate electrical bonding and grounding during the filling of a portable steel tank used to store a flammable liquid, according to a federal investigation.