Poor Engineering Controls Led to Explosion

An explosion that injured four workers at a Southern California medical products sterilization facility could have been avoided if managers had implemented safety recommendations issued by the facility's manufacturer four years earlier, according to a final investigative report released by the U.S. Chemical Safety and Hazard Board on Friday. The explosion was set off after a poorly trained maintenance supervisor at the Sterigenics International Inc. plant in Ontario, Calif. overrode safety procedures. The supervisor did not understand that a sterilization chamber in the plant contained da...