Part one of this two-part Bureau of Mines report details the location, ownership, and sources of energy and aluminum raw materials for most foreign and domestic primary aluminum plants, including those in countries with centrally planned economies. Tables give production capacities for each plant for the past three years and the present year and production capacity projections for the next four years. A special remarks section highlights important developments that could affect present or future production at individual plants and the timing of planned changes in capacity. The publication is based on current data collected by the Bureau from a variety of domestic and foreign sources. Up-to-date, comprehensive information on the world's aluminum producers will help professionals in both government and industry spot trends that could affect domestic supplies of this essential industrial commodity.