Ключевые слова: arc, assembly, construction, duty, equipment, factory, fill, fire, flame, flaming, flash, heavy, hot, industrial, industry, iron, ironworks, job, join, labor, laborer, light, man, manual, manufacture, manufacturing, mask, metal, metalwork, production, protection, protective, repair, safety, safety first, skill, smoke, spark, steel, structure, technical, tool, weld, welded, welder, welding, work, worker, working, workplace,