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    Accident Analysis by Functional Classification for Bituminous Coal Mines in 4-Foot to 8-Foot Seam Heights

    R. J. Traube / J. E. Hopper | NTIS | 1972
    Schlagwörter: Mineral Industries

    Advanced Underground Vehicle Power and Control; the Locomotive Research Platform

    D. L. Barnes | NTIS | 2003
    Schlagwörter: Mineral Industries , Mineral industry