Ключевые слова: arc, black, construction, craft, craftsman, doing, engineering, equipment, factory, fire, flash, gas, gloves, industrial, industry, iron, job, laborer, labourer, light, man, manufacture, manufacturing, mask, metal, overalls, protection, protective, repair, safety, skill, smoke, sparks, steel, technical, tool, tools, torch, torch light, tradesman, ultraviolet light, welder, welding, welding equipment, welding torch, work, worker,