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Exploration of the Packard fluorspar property, Gila County, Ariz.

Exploration of New Planet iron deposit, Yuma County, Ariz.

Investigation of Twin Buttes copper mines, Pima County, Ariz.

Published Year

• 1940-1949 (2)
• 1950-1959 (1)

Subject

• Copper mines and mining--Arizona--Pima County (1)
• Fluorspar mines and mining--Arizona--Gila County (1)
• Iron ores--Arizona--Yuma County (1)

Author

• Cummings, Joseph B. (3) *
• Romslo, T. M. (1) *

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