Showing 1 - 20 results of 156 for search '"Coal mines and mining United States."', query time: 0.07s Refine Results
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    Operation of continuous haulage systems by United States. Mine Safety and Health Administration

    Subjects: “…Coal mines and mining United States Safety measures.…”
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    Government Document Online Book
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    Remote reset systems for continuous mining machines used in extended cuts by United States. Bureau of Mines

    Subjects: “…Coal mines and mining United States Equipment and supplies.…”
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    Government Document Online Book
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    Design practices for multiple-seam room-and-pillar mines by United States. Bureau of Mines

    Subjects: “…Coal mines and mining United States Designs and plans.…”
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    Government Document Online Book
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    Navigation and control of continuous mining systems for coal mining by United States. Bureau of Mines

    Subjects: “…Coal mines and mining United States Equipment and supplies.…”
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    Government Document Online Book
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    Coal.

    Subjects: “…Coal mines and mining United States.…”
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    Government Document Online Book
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    Coal, operating mines.

    Subjects: “…Coal mines and mining United States.…”
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    Government Document Online Book
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    Evaluation, coal, depreciation rates.

    Subjects: “…Coal mines and mining United States.…”
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    Government Document Online Book
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