Ключевые слова: acetylene, arc, blue, bright, construction, craftsman, cutting, equipment, factory, fire, flame, flash, gas, hall, heat, helmet, hot, industrial, industry, iron, job, light, male, man, manufacture, manufacturing, mask, metal, metalwork, occupation, person, production, protection, repair, safety, skill, spark, steel, technology, tool, torch, weld, welder, welding, work, worker,