While investigators in West, Texas, sift through the rubble of a fertilizer plant that exploded last week, killing 15 people, safety advocates are calling for stricter government oversight of potentially hazardous sites like that one. The operator of the plant, West Fertilizer Co., did file an emergency response plan update in 2011 with the EPA listing anhydrous ammonia on site, but did not indicate there was a risk of fire or explosion at the plant.
