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This materials flow study includes a description of tin supply and demand factors for the United States to illustrate the extent of tin recycling and to identify recycling trends. Understanding the flow of materials from source to ultimate disposition can assist in improving the management of the use of natural resources in a manner that is compatible with sound environmental practices. The quantity of tin recycled in 1998 as a percentage of apparent tin supply was estimated to be about 22%, and recycling efficiency was estimated to be 75%. Of the total tin consumed in products for the U.S. market in 1998, an estimated 12% was consumed in products where the tin was not recyclable (dissipative uses).