Steel Foundry CU molten metal pouring into vat in steel or iron foundry. Lots of sparks flying, and the river of flaming metal glows with a sinister red/orange. WS foundry floor with numerous vats, some empty and dark, others glowing. Spout in distance pours molten metal from one vat down to another, with a great show of sparks. MS worker at smaller tub of melted iron or steel, turning a wheel to pour it gently into a mold.