An aerial view shows investigators walking through the aftermath of a massive explosion at a fertilizer plant in the town of West, near Waco, Texas April 18, 2013. The death toll in the explosion at the plant has reached 14 people, Mayor Tommy Muska said on Thursday. Among the 14 are four emergency medical technicians killed in the blast, which occurred on Wednesday evening after emergency responders rushed to put out a fire at the plant. REUTERS/Adrees Latif (UNITED STATES - Tags: DISASTER ENVIRONMENT AGRICULTURE)
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