FAIRLESS HILLS, Pa. (AP) — Authorities say two workers were burned after they were splashed by acid at a dental implant manufacturing plant in suburban Philadelphia.

Officials in Bucks County said the workers came into contact with nitric acid shortly after 9:30 a.m. Thursday during a chemical reaction at the Hiossen Inc. plant in Falls Township.

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Fire marshal Richard Dippolito said the workers were burned on the head and arms and taken to the Trenton, N.J. campus of Capital Health System.

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Their condition wasn’t immediately known, but Mike McClellan, chief of the township and U.S. Steel fire companies, said the injuries didn’t appear to be life-threatening.

McClellan said the workers were mixing chemicals into a five gallon pail when it exploded. The cause of the accident is under investigation.

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