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. Florence is one of the 10 giant Herrenknecht Tunnel Boring Machi...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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