Ключевые слова: 3540, arc, assembly, bars, builders, building, busy, collaboration, colleagues, construction, craftsman, effort, employment, fabricate, fabrication, factory, fire, fix, flash, formwork, gas, hand, heat, helmet, holding, hot, industrial, industry, installation, installing, iron, job, labor, laborer, labour, light, male, manual, manufacturing, men, metal, persons, placement, placing, protection, reinforcement, repair, safety, site, skilled,