Trunnions e rock drill: o que têm em comum

1. Passo 1. Trunnions — faz parte de — Conversor Bessemer. They tilt the converter to pour out the steel.
2. Passo 2. Conversor Bessemer — evoluiu para — Open-hearth furnace. A more controllable process.
3. Passo 3. Open-hearth furnace — é feito de — Tijolo. An open-hearth furnace is built of firebrick.
4. Passo 4. Tijolo — é material para — Metro. The vaults of the first tunnels are brick.
5. Passo 5. Metro — utiliza — Tunnel. Tunnels.
6. Passo 6. Tunnel — utiliza — Rock drill. Driving the Mont Cenis tunnel.

Abrir Evothings