Alcoa Corporation is a prominent aluminum company that is involved in all stages of aluminum production, from mining bauxite to refining alumina and smelting and casting aluminum.

The company's Alumina segment operates a global refining system that converts bauxite into alumina, which is then sold to aluminum smelters and customers in the industrial chemicals sector.

Alcoa's Aluminum segment includes a comprehensive smelting and casting system that transforms alumina into primary aluminum. This segment also includes energy assets in Brazil, Canada, and the United States. The smelting processes produce molten primary aluminum, which is then cast into common alloy ingots or value-added ingots.

Additionally, Alcoa has a significant stake in the Alcoa World Alumina and Chemicals joint venture, which oversees bauxite mines and alumina refineries, further strengthening its position in the global aluminum market.