molten pig iron flows from massive furnaces into round ladle vats, illuminating the steel mill with brilliant orange hues and

molten iron steel mill pig overhead crane industrial furnace ladle vat smelting orange flames sparks steelworks heating metal pouring machinery fire manufacturing production metallurgy welding metalworking process labor factory workshop craftsmanship foundry heat glowing bright industry heavy equipment transformation flying night work raw materials working environment landscape flows massive furnaces round vats illuminating brilliant hues dynamic