Ansul Employees Killed In Plant Explosion A series of explosions in a chemical manufacturing plant of the Ansul Chemical Co., Marinette, Wis., on December 21, killed two maintenance employees and severely damaged the plant. The fatal blast occurred at 5:15 p.m. while 15 men of the maintenance crew were working in the building on installation remodeling. One other man was critically burned and four workers less severely injured. Cause of the explosion has not been determined at this time. The company has anounced that only a small portion of the manufacturing facilities have been impaired and a few of its specialty chemical products will be affected. Fire equipment, other chemicals and refrigeration products will continue in production as usual.