Illustrated description of removal of wooden sheeting left in Cologne River port, which was danger to shipping; Flottmann rotary drill with D. B. S. type of air compressor and air escape directly into water used for work; rows of holes bored at bottom of sheeting which, by means of ropes attached to it and to tug above, was torn away piecemeal.


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    Title :

    Boring with rotary drills under water


    Additional title:

    Le Forage sous l'Eau au moyen de Perforatrices Rotatives


    Contributors:

    Published in:

    Publication date :

    1929


    Size :

    3 pages


    Remarks:

    2 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    French


    Keywords :


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