A chemical plant fire is seen in this aerial photo about twenty miles southeast of Baton Rouge, in Geismer, La., Thursday, June 13, 2013. Ambulances and helicopters took at least 30 people from the ... more 
A chemical plant fire is seen in this aerial photo about twenty miles southeast of Baton Rouge, in Geismer, La., Thursday, June 13, 2013. Ambulances and helicopters took at least 30 people from the burning chemical plant after an explosion Thursday, officials said. Early tests did not indicate dangerous levels of any chemicals around the plant, but area residents were told to remain indoors with doors and windows closed, said Jean Kelly, spokeswoman for the state Department of Environmental Quality. (AP Photo/Gerald Herbert) less 
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Associated Press | Photo By Gerald Herbert
Thu, Jun 13, 2013 3:02 PM EDT