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Tunnel Engineering @UCEQ_fQWPDMIRPiw7N1P8mbQ@youtube.com

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05:32
5 Biggest Tunnel Boring Machines in the World
09:48
The longest Railway Tunnel, the Gotthard Base Tunnel
05:23
The making of a smart tunnel
00:49
Tunnel Engineering Course
00:56
Tunnel Engineering Training Course
00:11
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