China Railway Tunnel Group TBM breakthrough at Georgia Gudauri Tunnel
China Railway Tunnel Group (CRTG) TBM breakthrough at Georgia Gudauri Tunnel photograph is press release of CRTG https://www.prnewswire.com/news-releases/successful-breakthrough-of-gudauri-tunnel-in-georgias-north-south-corridor-kk-highway-project-302124845.htmlCRCHI First Synchronized Flat-guided Multi-support Open-type TBM in Southwest China
CRCHI First Synchronized Flat-guided Multi-support Open-type TBM in Southwest China http://en.crchi.com/art/2023/8/3/art_40592_4605515.html
cover tunnel photo by: Matt Brown from London, England / CC BY
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