Brisbane Cross River Rail Tunnel Boring Machines at Herrenknecht's Northside facility in Australia
Brisbane Cross River Rail Tunnel Boring Machines at Herrenknecht's Northside facility in Australia photo: Queensland government press release.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.html
cover tunnel photo by: Matt Brown from London, England / CC BY
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