datamouse
Active Member
How true. I remember the date being given as Summer earlier in the year.I'm not sure the "start of tunnelling" has been consistently defined. Is it when the tunnelling contractor mobes, or when they launch the TBM?
February 17, 2012
Work continues at the West Launch Site. Pilings rigs are building concrete support walls for the tunnel launch shaft. When complete, crews will lower the tunnel boring machines into the ground to begin tunnelling eastward. This is expected to begin in late summer 2012.
Last edited: