The fire started at about 2 p.m. in the plant's coating machine. CertainTeed manufactures roofing shingles and products.
Ed Miller, manager of human resources, said the 70 employees working Friday were evacuated as a precaution. Though the plant's first response team was able to put the fire out, the fire department was called as a precaution.
Workers waited in the parking lot of the plant at the Ohio turnpike and U.S. 250 Friday afternoon for the all clear from the fire department to return to work.
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