Alumina Limited is an Australia-based company. The Company is engaged in investing in bauxite mining, alumina refining and selected aluminum smelting operations through its 40% ownership of Alcoa World Alumina and Chemicals (AWAC). Its partner, Alcoa, owns the remaining 60% of AWAC, and is the manager. The Company’s other subsidiaries include Alumina Finance Limited, Alumina Holdings (USA) Inc., Alumina International Holdings Pty. Ltd., Alumina Brazil Holdings Pty Ltd, Alumina (U.S.A.) Inc., Butia Participacoes SA, Westminer Acquisition (U.K.) Limited, Westminer International (U.K.) Limited and Westminer (Investments) B.V. AWAC has a global network of mines, refineries and smelters in Australia, the United States, Guinea, Suriname, Jamaica, Brazil and Spain.