Second HS2 tunnelling machine completes 5-mile drive under London
HS2’s second tunnel boring machine (TBM), named Caroline, has completed a 5-mile tunnel drive under London. This is the second machine to reach the Green Park Way vent shaft in Ealing, and one of four giant tunnelling machines being deployed to build the railway’s Northolt Tunnel. The 2,050-tonne TBM broke Read more…