Ключевые слова: circle, circular, construction, craftsman, engineering, equipment, fabrication, factory, flash, gas, horizontal, hot, industrial, industry, iron, labor, laborer, light, machine, man, manual, manufacture, manufacturing, mask, metal, metalwork, occupation, one, person, power, protection, rotate, round, russia, safety, skill, skilled, spark, sparks, steel, technology, tool, torch, tube, weld, welder, welding, work, worker, working,