Mining and crushing methods and costs at the Monocacy Quarry of the John T. Dyer Quarry Co., Monocacy, Pa. / by Joseph A. Conway.
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Format: | Government Document Book |
Language: | English |
Published: |
Washington, D.C. :
U.S. Dept. of Commerce, Bureau of Mines,
1931.
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Series: | Information circular (United States. Bureau of Mines) ;
6405. |
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