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Mining methods and costs at the Argonaut mine, Amador County, California
Methods and costs of concentrating tungsten ores at Atolia, San Bernardino County, Calif.
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Published Year
1930-1939 (2)
Subject
Mining engineering--California (2) *
Tungsten--California--San Bernardino County (1)
Author
Vanderburg, William O. (2)
