Alcoa created the aluminum industry a century ago and introduced many applications of aluminum to the modern world. It is currently one of the world's largest alumina refiners and primary aluminum producers. The company has bauxite mining operations in Australia, Brazil, Guinea, Jamaica, and Suriname. Alumina refining contributes to roughly 30% of its operating income. Alcoa also operates smelters across the globe. Primary aluminum brings roughly 50% of its operating income.
