oa Civil Engineering = Siviele Ingenieurswese - The application of artificial formation fracturing in increasing yields of water boreholes
Water from boreholes was so important to South Africa that, in many districts, such water was a sine qua non: Appreciation was due to the Author for his contribution to a subject which was known to be abundantly full of problems. This discussion pertains to those formations only, from which it was desirable to obtain as much water as could be found by means of jumper (percussion) drilling. Such formations were divers sedimentary deposits, bedded sandstones and shales, detrital pebbly gravels, conglomerates, granites, dolerites and basic rocks of the basalt family.
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