Exhibit 21 SUBSIDIARIES Listed below are the principal subsidiaries of Kaiser Aluminum & Chemical Corporation, the jurisdiction of their incorporation or organization and the names under which such subsidiaries do business. Certain subsidiaries are omitted which, considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary. Place of Incorporation Name or Organization ---- --------------- Alpart Jamaica Inc. Delaware Alumina Partners of Jamaica (partnership) Delaware Anglesey Aluminium Limited United Kingdom Kaiser Alumina Australia Corporation Delaware Kaiser Aluminium International, Inc. Delaware Kaiser Aluminum & Chemical of Canada Limited Ontario Kaiser Bauxite Company Nevada Kaiser Finance Corporation Delaware Kaiser Jamaica Bauxite Company (partnership) Jamaica Kaiser Jamaica Corporation Delaware Queensland Alumina Limited Queensland Volta Aluminium Company Limited Ghana Domestic California Pennsylvania Operations Los Angeles (City of Commerce) Erie (Partial List) Engineered Products Engineered Products Los Angeles (Santa Fe Springs) South Carolina Engineered Products Fabricating Greenwood Oxnard Engineered Products Engineered Products Greenwood Pleasanton Engineered Products Machine Shop R&D at the Center for Technology, Tennessee Administrative Offices Jackson Florida Engineered Products Mulberry Texas Sodium Silicofluoride, Potassium Silicofluoride Houston Louisiana Kaiser Aluminum Corporation Headquarters Baton Rouge Sherman Alumina, Environmental Offices Engineered Products Gramercy Washington Alumina Mead Michigan Primary Aluminum, Detroit (Southfield) Division Technology Center Automotive Product Development and Sales Richland Ohio Engineered Products Canton Tacoma Engineered Products Primary Aluminum Newark Trentwood Engineered Products Flat-Rolled Products Oklahoma Tulsa Engineered Products - ------------------------------------------------------------------------------------------------------ Worldwide Australia Japan Operations Queensland Alumina Limited (28.3% owned) Furukawa Kaiser Forged Products Company (Partial List) Alumina (47.5%) Canada Sales Office Kaiser Aluminum & Chemical of Canada Limited Russia (100%) Kaiser Aluminium Russia, Inc. (100%) Engineered Products International Business Development Ghana Wales, United Kingdom Volta Aluminium Company Limited (90%) Anglesey Aluminium Limited (49%) Primary Aluminum Primary Aluminum Jamaica Alumina Partners of Jamaica (65%) Bauxite, Alumina Kaiser Jamaica Bauxite Company (49%) Bauxite