Furnace bath with molten steel and archimedes’ screw: what they have in common

1. Step 1. Furnace bath with molten steel — is part of — Open-hearth furnace. A flat hearth with liquid metal.
2. Step 2. Open-hearth furnace — is made of — Brick. An open-hearth furnace is built of firebrick.
3. Step 3. Brick — is material for — Chimney. Chimneys are brick.
4. Step 4. Chimney — is part of — Steam locomotive. Smoke from the firebox leaves through the locomotive's chimney.
5. Step 5. Steam locomotive — has part — Crank. Connecting rods and cranks carry the piston stroke to the wheels.
6. Step 6. Crank — is part of — Archimedes’ screw. A handle or rotary drive.

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