Ключевые слова: arc, bright, closeup, color, construction, engineering, equipment, erection, fabrication, factory, fire, flame, flash, grinding, industrial, industry, job, labor, laborer, light, machine, machinery, manual, manufacture, manufacturing, men, metal, metalwork, power, protection, protective, repair, safety, shipyard, skill, skilled, smoke, spark, steel, technology, tool, welder, welding, work, worker, workplace, workshop,