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The United States is reliant upon imports for nearly all of the bauxite that it consumes. Small amounts of bauxite and bauxitic clays are produced in Alabama, Arkansas and Georgia for nonmetallurgical uses. Metallurgical-grade bauxite (crude dry) imports in 2012 totaled 10.3 Mt (11.3 million st), 8 percent more than the quantity imported in 2011. Jamaica (46 percent), Guinea (27 percent) and Brazil (25 percent) were the leading suppliers to the United States in 2012. In 2012, 84 kt (92,600 st) of refractory-grade calcined bauxite was imported, an 8-percent decrease compared with imports in 2011. Although domestic steel production increased by about 3 percent in 2012, compared with production in 2011, increased use of magnesia for refractory products may account for the decrease in refractory-grade calcined bauxite imports. Guyana (55 percent) and China (45 percent) were the sources of U.S. refractory-grade calcined bauxite imports. Imports of nonrefractory-grade calcined bauxite in 2012 totaled 323 kt (356,000 st), 24 percent more than the quantity imported in 2011. This increase was attributed to increased use of bauxite in cement, as proppants for hydraulic fracturing by the petroleum industry and by steel makers. Guyana (32 percent), Australia (29 percent) and Greece (25 percent) were the leading sources.