10 largest TBM - tunnel boring machines in the world

Giant tunnel boring machines used in the construction of roads or railroads
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The largest tunnel boring machines for tunnel construction under the ground, under the river or under the sea
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tunnel construction using huge machines, the best building materials and the latest construction or tunneling technology
the largest tunnel boring machine in the world, which builds large tunnels for the passage of vehicles or trains - Video by Top10Files
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HERE IS THE REAL TECHNOLOGY
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HOW THEY HAVE BUILD DUMBS? BORING MACHINES, LASERS & NUKES - up to 7 MILES PER DAY
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https://rumble.com/v1imls5-boring-maschines-lasers-and-nukes.html
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Secret Underground Bases, Cities, Tunnels and Roadways.. What is Going on Down There?
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https://rumble.com/v2pp3y6-secret-underground-bases-cities-tunnels-and-roadways..-what-is-going-on-dow.html
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UNDERGROUND BASES
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