Hazards to shipping caused by Ripple Rock; early efforts to remove obstruction; decision to make underground approach; 2400 ft of 7 ft by 8 ft tunnel driven, sub-shafts in submerged peaks raised to within 40 ft of each summit; coyote workings, precautions, problems of layout, calculation of explosive loads, loading procedure, layout of primacord lines, stemming, detonation, and blast.


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    Title :

    Demolition of Ripple Rock


    Additional title:

    Can Min Met Bul


    Contributors:
    Dolmage, V. (author) / Mason, E.E. (author) / Stewart, J.W. (author)


    Publication date :

    1958


    Size :

    14 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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