Pig Iron (2010)
May 1, 2010
30m
![Poster for Pig Iron](https://image.tmdb.org/t/p/w500/q0rbWBQZ7dLafHqJOvUnQrhxD3O.jpg)
Iron ore is super heated in a blast furnace to make pig iron, which in turn is used to produce steel. The making of steel is a continuous process. Pig iron is moved from the blast furnace to the steel plant by railroad. The trains are operated by remote control.