Anaconda Copper
（重定向自Anaconda Company）
![The victory labor-management production committee of the Butte mines, September 1942. In the back row from left to right are: J.A. Livingston, Anaconda Copper Mining Company; E.I. Renouard, assistant general superintendent, ACM; H.J. Rahilly, assistant general superintendent, ACM; Charles Black, Butte miners' union; John Downs, boiler makers' union; W.J. McMahon, commissioner of labor of ACM; John F. Bird, electricians' union; J.P. Ryan, foreman of ACM; Ira Steck, superintendent, electrical department of ACM; James Cusick, machinists' union; John J. Mickelson, Butte miners' union; Eugene Hogan, superintendent ACM. In the front row reading from left to right are: E.S. McGlone, general superintendent, ACM; Bert Riley, Butte miners' union; Dennis McCarthy, Butte miners' union; A.C. Bigley, ACM; Carl Stenberg, painters' union; John Eathorne, foreman of ACM; John Gaffney, carpenters' union.](/Images/godic/202412/20/1942-anaconda-LMC3952.jpg")
!["Semiotic Square of the Anaconda Copper Company and the "copper collar"."](/Images/godic/202412/20/Semiotic_Square3952.jpg")
Anaconda Copper Mining Company (also known 1899-1915 as the Amalgamated Copper Mining Company) was one of the largest trusts of the early 20th century. Founded in 1881 when Marcus Daly bought a silver mine, the company expanded rapidly based on the discovery of huge copper deposits. Daly built a smelter to process copper mined in Butte. By 1910, Anaconda had expanded its operations and bought the assets of two other Montana copper companies. In 1922 it bought mining operations in Mexico and Chile; the latter was the largest mine in the world and yielded two-thirds of the company's profits. The company added aluminum reduction to its portfolio in 1955.