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Journey through the Metro Tunnel
How the world's first metro system was built - Christian Wolmar
How Are Subways Built Underground?
How the world's longest underwater tunnel was built - Alex Gendler
EXPLORING The Underground METRO TUNNELS
Tunnel Boring Machine launching ceremony and lowering at the Metro Manila Subway Project Contract
How underground transit tunnels are built in the GTHA
The first trains are now in the Metro Tunnel
Your underground tour of the Metro Tunnel
Building Sydney's Underground Metro Tunnels!
Metro Tunnel Construction Sequence
Eppenberg SBB Railway Tunnel - From installation to the breakthrough
