HS2 TBM 'Florence' breakthrough after boring 16km long Chiltern tunnel.
High Speed 2 project, the HS2 TBM 'Florence' breakthrough after boring 16km long Chiltern tunnel. Flore...on, United Kingdom. HS2 media https://mediacentre.hs2.org.uk/news/breakthrough-for-hs2s-longest-tunnel ht...240321 TBM Cecilia breakthrough at Chiltern Tunnel North Portal
240321 TBM Cecilia breakthrough at Chiltern Tunnel North Portal released by High Speed 2 https://mediacentre.hs2.org.uk/resources/240321-tbm-cecilia-breakthrough-at-chiltern-tunnel-north-portal-dji-0064
cover tunnel photo by: Matt Brown from London, England / CC BY
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