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    The use of augers in surface mining of bituminous coal / by Haley, Wilbur A.

    Published 1957
    Government Document Book
  3. 3

    Teleoperation of a highwall mining system / by Kwitowski, August J.

    Published 1992
    Government Document Book
  4. 4

    Peligros con los cargadores frente-extremo programa de concienciación

    Published 2001
    Government Document Microfilm Book
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    Re-issue of P09-15 potential safety hazard related to explosion of pumps.

    Published 2011
    Online Access
    Online Access
    Government Document Electronic eBook
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  20. 20

    Effect of shearer web depth on dust generation and methane liberation / by Organiscak, John A.

    Published 1988
    Government Document Book
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