The Grand Haven Department of Public Safety was sent to the plant at 1900 Hayes St. shortly after 10 a.m. Upon arrival, officers learned employees on the scene had used fire extinguishers to knock down the fire.
The GHDPS officers used an additional extinguisher to completely put out the fire, said Lt. Joe Boyle.
Grand Haven Township firefighters also responded to the fire.
Grand Haven officers remained on the scene to assist in removing smoke from the building.