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Milling methods at the Concentrator of the Walker Mining Co., Walkermine, Calif.
Experimental extraction of gold and silver from California and Nevada ores
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Published Year
1930-1939 (1)
1960-1969 (1)
Subject
Gold ores--California (2) *
Silver ores--California (2)
Gold ores--Nevada (1)
Silver ores--Nevada (1)
Author
Engel, Abraham L. (1)
Heinen, H. J. (1)
Lancaster, Hugh Kenneth. (1)
McKenzie, M. R. (1)