HS2 tunnel progress as ‘Florence’ and ‘Cecilia’ pass Amersham
HS2 today confirmed that ‘Florence’ and ‘Cecilia’ – the two giant tunnelling machines digging HS2’s longest tunnels – have passed Amersham, 5-and-a-half miles into their 10 mile drive under the Chilterns. The enormous 2,000 tonne machines have spent almost two years excavating the twin tunnels between the M25 and South Heath in Buckinghamshire that will […]
