Ключевые слова: arc, background, black, build, connect, construction, craftsman, engineering, entrepreneur, equipment, fabricate, factory, fire, flash, industrial, industry, job, labor, laborer, light, man, manufacture, manufacturing, mask, metal, pipe, pipes, plant, production, protection, protective, safety, skill, skilled, smoke, spark, steel, structure, technical, technology, trained, weld, welded, welder, welders, welding, work, worker, workplace, workshop,