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 HS2 reveals design for last key structure for Chiltern Tunnel | UK 

HS2 has revealed the final designs for the North Portal of the Chiltern Tunnel the last of seven key structures for the high-speed rail project’s underground stretch.

https://www.tunnelsonline.info/news/hs2-reveals-design-for-last-key-structure-for-chiltern-tunnel-10696957/?utm_medium=email&utm_content=RR3LlnDok2a-vQiPbl9dBUlufZwcbY9jNLW6W6VcSjPnv2EgEbUnLuObh2kffS9O&idU=3