Chiltern tunnel

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HS2 completes civil engineering works on longest tunnel project

Important civil engineering milestone reached on UK’s new high-speed railway

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HS2 reveals updated designs for Amersham vent shaft headhouse

Revised design for HS2 tunnel vent shaft headhouse revealed by contractor

13 July 2022

INFRASTRUCTURE

HS2 reveals designs for final Chiltern tunnel headhouse

Final shaft headhouse design for use on HS2 Chiltern tunnel revealed

03 September 2021

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