FLAGSTAFF, Ariz. (AP) — Flames from welding equipment touched off a grain-dust explosion at a Nestlé Purina plant in Flagstaff Sunday, burning two workers severely and leaving two others with less serious burns, authorities said.
The four contractors were welding about 5 p.m. on the fifth floor of the complex’s seven-story grain elevator when their torches sparked grain dust and set off the blast, Flagstaff Fire Department Capt. Bill Morse said.
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