The U.S. Chemical Safety & Hazard Investigation Board (CSB) on Jan. 28 approved its final report on the 2013 ammonium nitrate fertilizer explosion in West, Texas, that killed fifteen people and injured hundreds of others. CSB found that key factors that led to the severity of the accident were:
Poor hazard awareness Proximity of the facility to nearby homes and businesses Inadequate emergency planning Limited regulatory oversight
Here's CSB's video about the incident:
CSB issued a total of 19 recommendations relating to the explosion, to the Environmental Protection Agency, Occupational Safety & Health Administration, International Code Council (responsible for the International Fire Code), Federal Emergency Management Agency, Texas Commission on Fire Protection, State Firefighters' and Fire Marshals' Association of Texas, Texas A&M Engineering Extension Services, Texas Department of Insurance, West Volunteer Fire Department, and El Dorado Chemical Company.