Milling methods at the Concentrator of the Walker Mining Co., Walkermine, Calif. / by M.R. McKenzie and H.K. Lancaster.
This paper describing the milling methods at the Walkermine concentrator, Plumas County, Calif., is one of a series being prepared by the United States Bureau of Mines on milling methods and costs in the various mining districts throughout the Untied States.
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Dept. of Commerce, Bureau of Mines,
1932.
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| Series: | Information circular (United States. Bureau of Mines) ;
6555. |
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