Pickup and davy lamp: what they have in common

1. Step 1. Pickup — has part — Copper wire. A winding.
2. Step 2. Copper wire — uses — Wire drawing. Drawing.
3. Step 3. Wire drawing — is used in — Wire rope. The wire is drawn.
4. Step 4. Wire rope — is part of — Mine hoist. Mine ropes were the first use of wire rope.
5. Step 5. Mine hoist — is part of — Coal mine. Hoisting.
6. Step 6. Coal mine — uses — Davy lamp. Protection against methane explosions.

Open Evothings