Ключевые слова: burn, burner, business, closeup, color, conveyor, factory, fire, foundry, fuel, furnace, generating, generator, heat, heavy, hot, industrial, industry, intensive, iron, manufacturing, melting, metal, metallurgy, mill, molten, orange, plant, pollution, power, process, production, red, roller, rolling, smoke, spark, steel, stove, technical, temperature, welding,