Synonyms were used for: Bergbau
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    Safety work at Britannia

    Lipsey, G.C. | Engineering Index Backfile | 1945
    Keywords: Mines and mining

    Maintain haulage equipment!

    Dartnell, W.W. | Engineering Index Backfile | 1942
    Keywords: Coal mines and mining

    Kentucky holds big first aid meet

    Engineering Index Backfile | 1929
    Keywords: Coal mines and mining