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  • Find out more about GCG Co-Authors New Research Comparing Sonic and Rotary Drilling on HS2

    GCG Co-Authors New Research Comparing Sonic and Rotary Drilling on HS2

    Geotechnical Consulting Group (GCG) is pleased to highlight a new technical paper examining the performance of sonic and rotary borehole drilling techniques in highly variable ground conditions along the High Speed 2 alignment in Northwest London. The paper, “A comparison of rotary and sonic borehole drilling techniques in the Lambeth Group and Chalk Group on…

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