Synonyms were used for: Bergbau
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    Linie pradu w przypadku plaskiego ruchu piasku

    Krzyszton, D. | Engineering Index Backfile | 1965
    Keywords: Mining engineering

    An electric colliery railway

    Engineering Index Backfile | 1908
    Keywords: Mining

    The right to minerals on railroad lands

    DeKalb, Courtenay | Engineering Index Backfile | 1906
    Keywords: Mining

    Gasoline locomotive haulage

    Engineering Index Backfile | 1915
    Keywords: Mining

    Driverless accumulator locomotives

    Recktenwald, J. | Engineering Index Backfile | 1911
    Keywords: Mining

    An aerial tramway, seven miles in length

    Engineering Index Backfile | 1907
    Keywords: Mining

    The aerial rail hoist and haulage system

    Crane, W.R. | Engineering Index Backfile | 1905
    Keywords: Mining

    The steam tractor hauling ore in Washington

    Perkins, Frank C. | Engineering Index Backfile | 1911
    Keywords: Mining