Wagonway e fole: o que têm em comum

1. Passo 1. Wagonway — evoluiu para — Railway track. Cast-iron and steel rails replaced wooden ones.
2. Passo 2. Railway track — utiliza — Rolling mill. Rails are rolled.
3. Passo 3. Rolling mill — faz parte de — Steel works. Rolling mills.
4. Passo 4. Steel works — tem como parte — Alto-forno. Blast furnaces.
5. Passo 5. Alto-forno — tem como parte — Fole. Air was blown in by bellows, later by blowers.

Abrir Evothings