Wire rope and piston pump: what they have in common

1. Step 1. Wire rope — is part of — Mine hoist. Mine ropes were the first use of wire rope.
2. Step 2. Mine hoist — is part of — Coal mine. Hoisting.
3. Step 3. Coal mine — is used in — Newcomen engine. Pumping water out of mines.
4. Step 4. Newcomen engine — has part — Piston pump. The beam drove a mine pump.

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