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A fire ignited in a ferrous sulfate vessel at a chemical plant in Texas.
Spokesperson for Pencco, Brian Wodetzki, said that no evacuations were needed and all employees were accounted for with no injuries.
The flames could be seen from the top of the interior storage tank. Firefighters worked to extinguish the blaze for three hours. They doused the fire with fire retardant and, what appeared to be, water. As firefighters were working, the flames would die out and then reignite.
Oddly, the company's Material Safety Data Sheet on ferrous sulfate said that the chemical does not burn. It decomposes upon heating and produces corrosive and/or toxic fumes. The company is investigating what caused the fire.