
The Campbell Mine headframe viewed from Highway 92 near Lowell and Warren, AZ, south of Bisbee. Its ore body, discovered in 1929, was large and high grade (over 1 million tons, 8-10% copper). | 
A close-up view of the Campbell Mine headframe. The mine was initially owned by the Calumet and Arizona Mining Co. which merged with Phelps Dodge in 1931. |