61–70 von 449 Ergebnissen
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    Mineral Resources, Geological Structure and Landform Surveys

    M. N. Short / P. D. Lowman | NTIS | 1973
    Schlagwörter: Mineral deposits

    Injury Experience in Coal Mining, 1969

    F. T. Moyer / M. B. McNair | NTIS | 1973
    Schlagwörter: Mineral Industries

    Mineral County Airport, Keyser, West Virginia

    NTIS | 1973
    Schlagwörter: Mineral County Airport

    Design and Development of Protective Canopies for Underground Low Coal Electric Face Equipment, Including Shuttle Cars

    R. Farrar / R. Champney / W. Hermanson et al. | NTIS | 1973
    Schlagwörter: Mineral Industries

    Methodological Plan for Aerial Seismic Studies at Sea and in the Open Ocean

    S. V. Potapev / G. G. Beletskii / I. I. Levin | NTIS | 1974
    Schlagwörter: Mineral Industries

    Standardization of Controls for Underground Electric Face Equipment. Appendix 3. Railed Personnel Carriers

    J. R. Krause / W. G. Hedling | NTIS | 1974
    Schlagwörter: Mineral Industries