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Hydraulic Classification In Coal Mining

Research on one borehole hydraulic coal mining system ,jul 01, 2008 the ideal jet of the monitor in the borehole hydraulic coal-mining system is a nonsubmergible free jet. through air lift, the nonsubmergible free jet can be set up in the mining hole. references dibble borehole mining: improved technology expands horizon. mining engineering, 1991, 290:

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