Alcoa Corp. engages in the production of bauxite, alumina, and aluminum products. It operates through the following segments: Bauxite, Alumina, and Aluminum. The Bauxite segment represents the company' global bauxite mining operations. The Alumina segment includes the company's worldwide refining system, which processes bauxite into alumina. The Aluminum segment combines smelting and casting operations produce primary aluminum. The smelting operations produce molten primary aluminum, which is then formed by the casting operations into either foundry ingot or into value add ingot products, including billet, rod, and slab. The company was founded by Charles Martin Hall on July 9, 1886 and is headquartered in Pittsburgh, PA.