Managed Subcontract Drilling and Installation of Inclinometers, with Grouting of Sonic Tubes: Crossrail Farringdon, Western Ticket Hall Ecologia were approached to assist a geotechnical instrumentation specialist in the drilling and installation of a series of 36m, Casagrande piezometer tipped monitoring wells and a Tube a Manchette at the Crossrail Farringdon West Ticket Hallsite. In addition to drilling works, there was a significant amount of

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