Chapter 2 of Raw to Ready: Bombardier highlights how the early experiments of aluminum extraction by Charles Martin Hall lead to the mass production of aluminum. In turn, opening the doors for experiments with aluminum alloys. Alfred Wilm discovers age hardening of copper aluminum alloy that is incorporated into WWI planes. Later, the addition of zinc solidifies the copper aluminum alloy that is still used in the production of commercial planes today. Inside the factory, a look at the building of CRJ1000 lightweight body.