Tunnel Boring Machines

Tunnels are vital in most big cities, and tunnel boring is the modern way to create them. Tunnel boring machines (TBMs) are huge, powerful, incredibly complex machines that get the job done.

Tunnel Construction Explained
How the world’s longest underwater tunnel was built – Alex Gendler
The Channel Tunnel Documentary
Inside London’s £18BN New Railway
Meet Crossrail’s giant tunnelling machines

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