Brenner Base Tunnel TBM Serena reaches state border between Italy and Austria
Brenner Base Tunnel TBM Serena reaches state border between Italy and Austria from BBT seCRCHI World's Largest Diameter Vertical TBM for shaft boring
World's Largest Diameter Vertical Tunnel Boring Machine for shaft boring Made in China by CRCHI. http://en.crchi.com/art/2023/6/16/art_40592_4586039.html
cover tunnel photo by: Matt Brown from London, England / CC BY
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