G O P H E R S D R I L L S T E E L S Case Study W E L D G R I P W E L D G R I P W E L D G R I P O C H L G T E N I E C A syst em to achie ve the 6-8 met er drilling depth. A variety of Drill Bits wer e tes ted & the R32/51mm/ES S-F button bits pr ov ed the most pr oductive in the Carbonif er ous Limest one. Due to embankment ins tability heavy machines w er e not permitted on the embankment cr est. Drilling oper ations wer e achiev ed using e x c avat or machines operat ed fr om the c arriageway . Sub Contr actor: Main Contr actor: V ertic al Ac c es s Ltd. Pr oducts Used: W eldgrip R32N self drilling anchor s Edmund Nutt all Ltd. Client: Network Rail Pr oject: Do v ehol es Rail Cutting St abilisation Pr oject The F A26 Rock Cuttings pr oject invol ves the s tabilisation of sev eral r ail

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