ASARCO is a mining, smelting, and refining company based in Tucson, Arizona, which mines and processes primarily copper. The company has been a subsidiary of Grupo México since 1999.
Its three largest open-pit mines are the Mission, Silver Bell... Wikipedia
Date founded: 1899
Headquarters: Tucson, AZ
Founder: Henry Huttleston Rogers
Parent organization: Asarco Incorporated