Western Mines and Mining notes
Alder Mine details, such as location, geology, and development
Collection area: Arizona and Southwest
Collection dates: 1911-1948
Portfolio of typescript pages, with brief descriptions of 91 mines. Locations are mostly in California and Arizona, but other western areas are also included. Historical and technical information is given, appraising each mine from an economic point of view. The reports encompass geological aspects, development, method of working, value, and future prospects.
Compiled by an unknown assayer.
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