Location: Superior, Pinal County
Geologic reports, history and assessment of the Magma Copper Company holding near Superior in Pinal County, Arizona.
Magma Copper Company Annual Report 1921
New Arizona Copper Mill Hailed as Safety Model -- News Release
Report on a portion of the Magma-Apex Copper Company
Story of the Magma Mine
Black and White Photograph of Magma Copper Workings