The U.S. Chemical Safety Board (CSB) says a turf war is hindering its investigation into the April 17 West, Texas fertilizer plant blast. In a letter to Sen. Barbara Boxer (D-Cal.), CSB chairman Rafael Moure-Eraso accused the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) of destroying and withholding evidence and refusing to permit CSB investigators access to the site.
