PDF-ZINC(Data in thousand metric tons of zinc content unless otherwise not

186 Domestic Production and UseThe value of zinc mined in 2013 based on zinc contained in concentrate was about 160 billion Zinc was mined in 4 States at 14 mines operated by 4 companies Two f. S mine production of copper in 2012 increased by 4 to about 115 million tons and was valued at about 9 billion Arizona Utah New Mexico Nevada and Montana in descending order of production accounted for more than 99 of domestic mine production copper In addition 3 of domestic gold was recovered as a byproduct of processing base metals chiefly copper Thirty operations yielded more than 99 of the gold produced in the United States Dome stic gold mine production in 2013 was estimated to be about 22 The total value was estimated to be about 16 billion Twenty eight companies operated 61 plants in 16 States The estimated percentage of salt sold or used by type was salt in brine 46 rock salt 36 vacuum pan 11 and solar salt 7 The chemical industry 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 94 Domestic Production and Use The only commercially active lithium mine in the United States was a brine operation in Nevada. The mine’s production capacity was expanded in 2012, and a new lith 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 Domestic Production and UseA tungsten mine in California produced concentrates in 2013. Approximately eight companies in the United States processed tungsten concentrates, ammonium paratungstate, tun 176 Domestic Production and UseSeven U.S. firms that compose most of the domestic vanadium industry produced ferrovanadium, vanadium pentoxide, vanadium metal, and vanadiumbearing chemicals or speci 48 Domestic Production and UseIn 2014, U.S. mine production of copper increased by 10% to about 1.37 million tons, and was valued at about $9.7 billion. Arizona, Utah, New Mexico, Nevada, and Montan 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, 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 34 Domestic Production and UseBromine was recovered from underground brines by two companies in Arkansas. Bromine often isthe leading mineral commodity, in terms of value, produced in Arkansas. The Domestic Production and UsePhosphate rock ore was mined by 5 firms at mines in 4 Statesand processed into to an estimated 27.1 million tons of marketable product valued at $2.4 billion, f.o.b. mine.