9 Self-rescue apparatus, namely, oxygen breathing units; face-shields for protection against accidents, irradiation and fire; valves, [ gauges, whistles, ] tubes and hoses, [ air cylinder supports, ] all adapted for use with breathing apparatus; dust protection masks, gas masks, welding masks; [ protective suits used to provide protection against direct contact with and contamination by nuclear, biological and/or chemical conditions; protective suits used to protect user from acid and lye; gas-tight training suits; full or ] partial protective apparel for use in infectious disease environments, and disposable protective apparel for protection against infectious diseases and environmental hazards; protective clothing [ and footwear ] , namely, [ jackets, coats, overalls, bib overalls, pants, ponchos and ] hoods [ , boots, work shoes, and overshoes ] for use in general industry, hazardous material handling, food processing and agriculture to prevent injuries and provide protection from mud and water, chemical splash protection, including hazardous materials protection as well as impact, compression, puncture, and electrical hazard protection; protective helmets