Ключевые слова: arc, assembly, background, concept, construction, craftsman, dark, effect, elephant, equipment, fabricate, fabrication, factory, fire, flash, gas, hot, industrial, industry, iron, labor, laborer, light, maket, man, manual, manufacture, manufacturing, mask, metal, oilandgas, oilrefinery, protection, repair, russia, safety, samara, skill, skilled, smoke, spark, steel, street, technical, technology, tool, urban, weld, welded, welder, welding, weldingmachine, weldingsparks, weldingtorch, work, worker,