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Mining and milling methods at San Xavier mine, the Eagle-Picher Mining & Smelting Co., Pima County, Ariz.
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Published Year
1950-1959 (1)
Subject
Lead mines and mining--Arizona (1)
Silver mines and mining--Arizona (1) *
Author
Duff, Grover J. (1) *
Kumke, Charles A. (1)
