Rolling mill and voltaic pile: what they have in common

1. Step 1. Rolling mill — is part of — Steel works. Rolling mills.
2. Step 2. Steel works — has part — Open-hearth furnace. A steelmaking shop.
3. Step 3. Open-hearth furnace — evolved from — Bessemer converter. A more controllable process.
4. Step 4. Bessemer converter — uses — Oxidation. Oxygen in the air burns out the carbon.
5. Step 5. Oxidation — is used in — Electrochemical reaction. Redox reactions.
6. Step 6. Electrochemical reaction — is used in — Voltaic pile. Current arises from the reaction of dissimilar metals with an electrolyte.

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