Ray mine

The Ray mine is a large copper mine in Pinal County, Arizona, near the town of Kearny, in the southwestern United States. ASARCO, a subsidiary of Grupo México, currently owns the mine, which it acquired from Kennecott Copper in 1986.
The Ray mine has one of the largest copper reserves in the United States, with proven and probable reserves of of ore grading 1.73% copper,. Copper from the Ray mine goes to the Hayden Smelter.
File:Copper-192630.jpg|thumb|left|Old specimen of native copper from Ray mine. Large "sail" at left is a spinel twin.