Ключевые слова: alchemy, assembly line, automated production line, building industry, cast iron melt, casting factory, construction, dangerous, east factory, energy, flame, furnace, hot sparks, industry, man, manufacturing machine, metal, metal industry, metallurgical industry workers, protection, safety, steel, steel mills, steel workers, the concept of safety helmet, the iron and steel, the iron helmet, the melt, the molten steel, the workplace, work, workshop,