Bureau of Mines / Minerals yearbook: Metals, minerals, and fuels 1972
Year 1972, Volume 1 (1972)
Harris, Keith L.
Tin, pp. 1209-1225 ff. PDF (1.7 MB)
Tin By Keith L. Harris1 Free world supply of tin exceeded consumption by about 7,000 long tons in 1972. World mine production of tin for 1972 was 239,602 long tons, up from 232,232 kmg tons in 1971. U.S. consumption of primary and secondary tin taken together decreased 1% for the year, with primary tin consumption increasing 3% and secondary consumption decreasing 14%. The ma$or uses for tin were in solder, 32%; tinplate, 31%; bronze and brass, 14%; chemicals including tin oxide, 6%; and babbitt, 4%. Tin, as the mineral cassiterite (SnO2), is mined and smelted at many places around the world, almost totally outside the United States. Most of the nation's tin, in the form of slabs, bars, and ingots, came from Malaysia and Thailand. Less than 100 long tons of tin were mined in the United States during the year, all from mines in Colorado and Alaska. About onequarter of the tin used in the United States in 1972 was reclaimed from scrap in about 85 secondary smelters located across the country. The only primary tin smelter-refinery currently operating in the United States is the Texas City, Tex., facility of Gulf Chemical and Metallurgical Corp. The smelter received 4,216 long tons of tin-inconcentrate from Bolivia's State-owned Corporacfon Minera de Bolivia (COMIBOL). In addition to concentrates, the smelter processed tin wastes for secondary recovery. The Lost River Mining Corp., which has been conducting an evaluation of its fluorite-tin-tungsten deposit on Alaska's Seward Peninsula, has revised upward its tin reserves in one zone to just under 80,000 long tons. An additional 110,000 long tons have been claimed or indicated in two other zones of the property. The General Services Administration disposed of no tin from the strategic stockpile through commercial channels, but 361 long tons were shipped to Turkey under programs of the Agency for International Development (AID). The average New York price for prompt delivery of Straits (Malaysian) tin in 1972 was 177.469 cents per pound. This "Physical Scientist, Division of Nonferrous, Metals. Table 1.—Salient tin statistics (Long tons) 1968 1969 ' 1970 1971 1972 United States: ' Production: Mine W W W W W Smelter Secondary Exports (including reexports) Imports for consumption: Metal Ore (tincontent) Consumption: Primary Secondary Price: Straits tin, ' in New York, average cents per pound World production: Mine Smelter~._ 3.458 22,495 4,495 57,358 2.489 58,859 28,102 148.111 228,332 229,564 345 22,775 2,903 54,950 57,730 23,060 164.485 225,725 225,290 NA 20,001 4,452 50,554 4,667 52,957 20,880 174.136 228,500 223,696 4,000 20,096 2,262 46,940 3,060 51,980 17,970 167.844 232,232 231,901 4,000 20,180 1,134 52,451 4,216 58,506 15,527 177.469 239,602 286,185 NA Not ' available. W ' Withheld to avoid disclosing individual company confidential data. 1209
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