Ключевые слова: arc, assembly, build, builder, construction, cut steel, danger, dark, engineering, equipment, factory, fire, helmet, industrial, industry, iron, join, labor, laborer, labourer, light, machine, manufacture, manufacturing, mask, metal, oxygen, people, production, professional, protection, protective, repair, safety, site, skill, smoke, spark, steel, structure, technical, technology, tool, weld, welder, welding, work, worker, workplace, workshop,