Industrial laundry's failure to protect workers against fall hazards has prompted $70,200 in proposed fines from the U.S. Labor Department's Occupational Safety and Health Administration. Unifirst, Corp, located at 8 Industrial Park Drive in Nashua, was cited for alleged willful and serious violations of the Occupational Safety and Health Act following an OSHA inspection initiated when an employee suffered serious injuries after falling 10 feet from an unguarded mezzanine on Sept. 3 of last year.