Synonyms were used for: Kohle
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    Index Archiv für Eisenbahnwesen 1878 bis 1936

    Free access
    Universität Kassel / Vahrenkamp, Richard | DataCite | 2024
    Keywords: Kohle

    Mining roof bolting machine safety : a study of the drill boom vertical velocity

    Free access
    Ambrose, Dean H. / Bartels, John R. / Kwitowski, August J. | BASE
    Keywords: Coal-mining machinery/Safety measures ;