PDF-MAGNESIUM METAL(Data in thousand metric tons unless otherwise noted) .

98 Domestic Production and UseIn 2013 magnesium was produced by one company at a 63500tonperyear plant in Utah by an electrolytic process that recovered magnesium from brines from the Great Salt L. 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 Based on published market prices the value of primary metal production was 407 billion Aluminum consumption was centered in the East Central United States Transportation accounted for an estimated 36 of domestic consumption the remainder was used in 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 108 Domestic Production and UseThe United States had only one active nickel mine in 2013a greenfield, underground operation in Michigan. Contractors completed the main decline tunnel of the new chal 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 46 Domestic Production and Use Significant U.S. cobaltmine production has not been reported since 1971, and production of refined cobalt from imported nickelcoppercobalt matteceased in 1985. U.S. sup 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, 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 158 Domestic Production and Usemestic talc production in 2013 was estimated to be 531,000 tons valued at$18 million. Four companies operated six talcproducing mines in four States in 2013. The top t Domestic Production and UseIn 2014, the United States produced approximately 1,170 tons of silver with an estimated value of $718 million. Silver was produced at 3 silver mines and as a byproduct or 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 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