HS2 celebrates as longest tunnels reach halfway point under the Chilterns [HS2]
Date: 01/02/2023
Two giant tunnelling machines - named Florence and Cecilia - pass halfway mark during excavation of the 10 mile long Chiltern tunnels. 1.3 million cubic metres of material - enough to fill more than 500 Olympic sized swimming pools - excavated during first 5 miles.
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HS2 celebrates as longest tunnels reach halfway point under the Chilterns
HS2
Two giant tunnelling machines “ named Florence and Cecilia “ pass halfway mark during excavation of the 10 mile long Chiltern tunnels 1.3 million cubic metres of material “ enough to fill more than 500 Olympic sized swimming pools “ excavated during first 5 miles Download and embed a new video and images showing progress on the enormous tunnelling operation.
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