PDF-TALC AND PYROPHYLLITE(Data in thousand metric tons unless otherwise no

158 Domestic Production and Usemestic talc production in 2013 was estimated to be 531000 tons valued at18 million Four companies operated six talcproducing mines in four States in 2013 The top t. Of the total alumina used about 90 went to primary aluminum smelters and the remainder went to nonmetallurgical uses Annual alumina production capacity was 564 million tons with three Bayer refineries oper ating throughout the year One other refiner Of the total alumina used more than 90 went to primary aluminum smelters and the remainder went to nonme tallurgical uses Annual alumina production capacity was 564 million tons with four Bayer refineries operating throughout the year Domestic bauxi S feldspar production in 2010 was valued at about 36 million The three leading producers accounted for about 88 of the production with four other companies supplying the remainder Producing states were North Carolina Virginia California Ida ho Oklaho 68 Domestic Production and UseAlthough natural graphite was not produced in the United States in 2013, approximately 90 U.S. firms, primarily in the Northeastern and Great Lakes regions, used it for 98 Domestic Production and UseIn 2013, magnesium was produced by one company at a 63,500tonperyear plant in Utah by an electrolytic process that recovered magnesium from brines from the Great Salt L 100 Domestic Production and UseManganese ore containing 35% or more manganese has not been produced domestically since 1970. Manganese ore was consumed mainly by eight firms with plants principally 118 Domestic Production and Use Phosphate rock ore was mined by 6 firms at 12 mines in 4 States and upgraded to an estimated 28.4 million tons of marketable product valued at $ 2.7 billion, f.o.b. mi 122 Domestic Production and UseIn 2013, the production value of marketable potash, f.o.b. mine, was about $649 million. Potash was produced in Michigan, New Mexico, and Utah. Most of the production 186 Domestic Production and UseThe value of zinc mined in 2013, based on zinc contained in concentrate, was about $1.60 billion. Zinc was mined in 4 States at 14 mines operated by 4 companies. Two f 70 Domestic Production and UseIn 2013, domestic production of crude gypsum was estimated to be 16.3 million tons with a value of about $130 million. The leading crude gypsumproducing States were, in Domestic Production and UseIn 2014, an estimated million tons (21 million short tons) of quicklime and hydrate was produced (excluding commercial hydrators), valued at about $2.2 billion. At yearend, Domestic Production and UseIn 2014, the production value of marketable potash, f.o.b. mine, was about $700 million. Potash was produced in New Mexico and Utah. Most of the production was from southea 26 Domestic Production and UseIn 2014, bauxite consumption was estimated to be 9.6 million tons, nearly all of which was imported, worth an estimated 269 million dollars. More than 95% of the bauxit Domestic Production and UseTwo firms produced ilmenite and rutile concentrates from surfacemining operations in Florida and Virginia. Based on reported data through October 2014, the estimated value