FILE - This Feb. 18, 2015, file photo shows a structure damaged after an explosion in a processing facility at the ExxonMobil refinery in Torrance, Calif. A federal safety board says the 2015 explosion at the refinery was preventable and is recommending changes to its safety procedures. The U.S. Chemical Safety and Hazard Investigation Board released a 73-page report on Wednesday May 3, 2017. (Brad Graverson /Los Angeles Daily News via AP)
Featured Photo Galleries
