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240321 TBM Cecilia breakthrough at Chiltern Tunnel North Portal
By Kris Lubcek
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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