Directed by Tina Keeper and presented by the National Film Board of Canada, How Do They Recycle Steel? (1999) has everything: conveyor belts, crackling sounds, massive machines in a massive factory, sparks, smoke, fire, molten metal, more sparks…
Melting down and recycling existing steel products is a more efficient and sustainable process than mining iron ore to make virgin steel. From the EPA:
Recovering steel not only saves money, but also dramatically reduces energy consumption, compared to making steel from virgin materials. In turn, this reduces the amount of greenhouse gases released in to the air during processing and manufacturing steel from virgin ore.
Iron and steel are easily recycled and are the most recycled materials in the world.