PDF-SILVER Data in metric tons of silver content unless otherwise noted Domestic Production

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. 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 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 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 106 Domestic Production and UseIn 2013, molybdenum, valued at about $1.4 billion (based on an average oxide price), was produced at 11 mines. Molybdenum ore was produced as a primary product at thre 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 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 58 Domestic Production and Use No domestic primary gallium recovery was reported in 2012. One company in Utah recovered and refined gallium from scrap andimpure gallium metal. Imports of gallium, whi 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, 66 Domestic Production and UseIn 2014, domestic gold mine production was estimated to be about tons, % less than in 2013, and the value was estimated to be about $8.llion.Gold was produced at about 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