Developing a lock-hopper feeder for hydraulic hoisting of coal / by H.A. Dierks and H.B. Link.
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Format: | Government Document Book |
Language: | English |
Published: |
Washington, DC :
U.S. Dept. of the Interior. Bureau of Mines,
1964.
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Series: | Report of investigations (United States. Bureau of Mines) ;
6347. |
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