University of Arizona

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Records of the Detroit Copper Mining Company

1882 to 1919
AZ 163
Collection Guide
Page from the Ledger of the Detroit Mining Company

The Detroit Copper Mining Company operated near Clifton and Morenci, AZ, started in 1875 by William Church. Phelps Dodge purchased an interest in the company in 1881 and bought Church out in 1897. After a 1917 reorganization, the operation was known as Phelps Dodge Corporation, Morenci Branch.

 Collection includes financial journals, payrolls, time books, and ore and freight records related to mining company operations. Includes financial records of Hotel Morenci (1904-1913) and Frisco Ranch (1909-1913).

Included materials:
Manuscript
Subject Area:
Mining
Business
Collection Area:
Arizona & Southwest

Land Acknowledgement

We respectfully acknowledge the University of Arizona is on the land and territories of Indigenous peoples. Today, Arizona is home to 22 federally recognized tribes, with Tucson being home to the O’odham and the Yaqui. Committed to diversity and inclusion, the University strives to build sustainable relationships with sovereign Native Nations and Indigenous communities through education offerings, partnerships, and community service.