HS2 Chiltern tunnel with crosspassageway visible to the right November 2022 50591 London, United Kingdom. HS2 media...

Hyperloop Webuild image coursesy by HiperloopTT Webuild media https://www.webuildgroup.com/en/media/news/webuild-feasibility-study-futuristic-hyper-transfer-project-italy/

Rome Metro - Line C, Venezia Station, Hydro-Milling Machine works - Webuild Italia https://www.webuildgroup.com/en/media/news/hydro-milling-machine-works-built-excavate-record-depth-venezia-station-lene-c-rome-metro/

Use of shotcrete, Eiganes tunnel in Stavanger, Norway. Øyvind Ellingsen/Statens vegvesen at press release: https://kommunikasjon.ntb.no/pressemelding/18044609/kan-spare-milliardar-pa-nye-tunnelar?publisherId=17847490&lang=no

Breakthrough at Bergåstunnel, Helgeland Norway Foto: Håkon Bendik Pederesen, Statens vegvesen press release at...

Frederick-Douglass-Tunnel-with-Electrified-Trains Amtrak media release https://media.amtrak.com/2024/02/amtrak-awards-contract-to-build-new-frederick-douglass-tunnel-in-baltimore/

Terratec Hard Rock Double Shield Vishnugad-Pipalkoti Hydropower India TERRATEC media https://terratec.co/NewsInfos/detail/116

Terratec Hard Rock Double Shield Vishnugad-Pipalkoti Hydropower India Terratec media https://terratec.co/NewsInfos/detail/116

World Tunnel Congress 2024 Shenzhen CHINA https://wtc2024.cn/index.html

Potomac River Tunnel Corridor Map is from DC Water https://www.dcwater.com/projects/potomac-river-tunnel-project