Law enforcement personnel patrol the scene Saturday, April 20, 2013, three days after an explosion at a fertilizer plant in West, Texas. The massive explosion at the West Fertilizer Co. Wednesday night killed at least 14 people and injured more than 160. (AP Photo/Charlie Riedel)

Associated Press
Law enforcement personnel patrol the scene Saturday, April 20, 2013, three days after an explosion at a fertilizer plant in West, Texas. The massive explosion at the West Fertilizer Co. Wednesday night killed at least 14 people and injured more than 160. (AP Photo/Charlie Riedel)
Law enforcement personnel patrol the scene Saturday, April 20, 2013, three days after an explosion at a fertilizer plant in West, Texas. The massive explosion at the West Fertilizer Co. Wednesday night killed at least 14 people and injured more than 160. (AP Photo/Charlie Riedel)
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