PDF-LITHIUM(Data in metric tons of lithium content unless otherwise noted)

94 Domestic Production and Use The only commercially active lithium mine in the United States was a brine operation in Nevada The mine146s production capacity was expanded in 2012 and a new lith. Silver was produced at 3 silver mines and as a byproduct or coproduct from 39 domestic base and precious metal mines Alaska continued as the countrys leading silver producing State followed by Nevada There were 14 US refiners that indicated producti 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 active lithium carbonate plant in the United States was a brine operation in Nevada. Two companies produced a large array of downstream lithium compounds in th 160 Domestic Production and UseNo significant U.S. tantalum mine production has been reported since 1959. Domestic tantalum resources are of low grade, some mineralogically complex, and most are not 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 186 Domestic Production and Use atural zeolites were mined by companies in the United States, with 1other company working from stockpiled materials or zeolites purchasedfrom other producers for resal 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 48 Domestic Production and Use Domestic mine production of copper in 2010 declined by about 5% to 1.12 million tons but its value rose to about $8.4billion. The principal mining States, in descending 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 Domestic Production and UseIn 2014, 1.26 billion metric tons of crushed stone valued at more than $12.8 billion was produced by 1,550 companies operating 4,000 quarries, 91 underground mines, and 210 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.