Historic breakthrough for HS2’s longest tunnel
HS2’s first giant tunnelling machine – which launched almost 3 years ago – broke through today at the end of her 10-mile (16km) journey under the Chilterns, excavating the longest tunnel on the ambitious new rail project. The enormous 2,000 tonne Tunnel Boring Machine (TBM), named ‘Florence’, is one of 10 machines excavating the 32 […]
