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Detailed text transcripts for TV channel - FOXNEWS - 20130421:11:46:00

First time, but only under strict curfew. clair s there clarity on how the explosion happened? could it happen again? joining us is dr. tim murphy, associate professor and the chair of environmental safety and occupational health programs at the university of finley. thank you for being here. good morning. how did something this catastrophic happen? a combination of things. when you have a fire, we still don t know what the source is, it inimpinges on the ammonia tankss and the tanks because they re partially fille filled h liquid and partially with vapor, they heat up. the pressure ruptures the tanks. then the ammonia ignites at 1200-degrees. the fire there was at that temperature. that s how we end up with the explosion. alisyn: dr. murphy, aren t there safe forwards in place if a wire were to break ....

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