Search Results - "Coal mines and mining West Virginia"

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    Selected geologic factors affecting mining of the Pittsburgh coalbed /

    Selected geologic factors affecting mining of the Pittsburgh coalbed /

    Published 1975
    Subjects:
    Unknown

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  2. 2
    Pillar load transfer associated with multiple-seam mining /

    Pillar load transfer associated with multiple-seam mining / by Matetic, Rudy J.

    Published 1987
    Subjects:
    Book

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