Robbins TBM completes ‘record’ run on tunnel project
25 March 2022
A Robbins Single Shield Tunnel Boring Machine (TBM) has completed a record-setting 3.5km run in sedimentary rock below Lake Ontario for the Ashbridges Bay Outfall in Toronto, Ontario, Canada.
The machine project, for the Southland/Astaldi JV, began in March 2021 at 85m deep and 16m diametre shaft, boring initially…