CORRIGAN, TX - An explosion at Georgia-Pacific's Corrigan, TX plywood and flooring plant injured seven employees, four of whom were flown to a Houston hospital Houston for treatment of burns. The other three were taken by ambulance to a hospital in Lufkin.

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The explosion occurred at 6:30 p.m. April 26, reports the Lufkin News. The Livingston, TX Fire Department says the the explosion originated outside the main manufacturing plant, in the baghouse at the sawdust collection system.

The explosion triggered a fire, which took about three hours to extinguish. The event was reported to OSHA, according to KLTV in Corrigan.

Georgia-Pacific acquired the Corrigan plywood plant from International Paper in 2007, as part of a five-plant transaction.