Early mining equipment plans and descriptions, 1944.

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Early mining equipment plans and descriptions, 1944.

http://www.worldcat.org/oclc/309440340

The Early Mining Equipment Plans and Descriptions collection consists blueprints and instructions from the "Old Prospector" (Jack Douglas of Dutch Flat, Calif.) for building a dry washer, a papoose, and a doodle bug, all forms of ore concentrators.

1 folder.

University of Alaska Fairbanks, Elmer E. Rasmuson Library

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SNAC Resource ID: 7293549

University of Alaska Fairbanks, Elmer E. Rasmuson Library

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Douglas, Jack D.

http://n2t.net/ark:/99166/w693446h (person)