Mining and milling methods and costs at Knob Hill mine, Republic, Wash.
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| Title: | Mining and milling methods and costs at Knob Hill mine, Republic, Wash. |
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| Authors: | Cooper, C. L. |
| Source: | United States Bureau of Mines. Information Circular; 1940, Vol. 7123, p1-29, 29p |
| Database: | Applied Science & Technology Source |
| Description not available. |
