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The potential hazards of welding include harmful smoke (a mixture of fine particles – fumes - of metal and toxic gases), intense heat and sparks, loud noises, bright light, ultraviolet and infrared radiation. Exposure to welding fumes has been a common problem for welders, especially for those involved in railroad track and shipyard welding, automobile industry, construction, and heavy equipment manufacturing. Welding fumes are internationally classified as carcinogenic to humans ( IARC cla …