Herrenknecht TBMs bore 50 kilometers of tunnel for Stuttgart-Ulm railway in just 5 years
Herrenknecht tunnel boring machines have bored 50 kilometers of tunnels in Germany in just 5 years. The tunnels are for the Stuttgart-Ulm railway. https://allgemeinebauzeitung.de/abz/bahnprojekt-stuttgart-ulm-fast-50-kilometer-moderne-infrastruktur-gebohrt-38200.html
cover tunnel photo by: Matt Brown from London, England / CC BY
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