Longest HS2 green tunnel aims to avoid faults of the first

HS2 chiefs said “lessons learned” during the troubled construction of the project’s first green tunnel will be applied as work starts on a longer similar structure.
Faults were discovered in the giant precast segments used to construct the first tunnel in Chipping Warden, Northamptonshire
The same team of tunnel segment manufacturer Stanton Precast and  main contractor EKFB – Eiffage, Kier, Ferrovial Construction and BAM Nuttall – have now begun assembling the