Ключевые слова: arc, assembly, build, business, company, construction, craftsman, design, electric, engineering, equipment, fabricate, factory, fire, flash, hand, industrial, industry, iron, job, laborer, light, machine, man, manufacture, manufacturing, mask, metal, office, prefabricate, production, protection, repair, safety, shipyard, skill, skilled, smoke, spark, steel, structure, team, technical, technology, welded, welder, welding, work, worker, workplace,