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Re:Tunnel Boring Machines (2018) by Swannie on Tuesday November 19, 2019 @02:26AM (#21571234)
> Which would require the digging of a third hole where the TBM "drill heads" meet.

In most projects it's called a station.

http://www.crossrail.co.uk/construction/tunnelling/meet-our-...

Occasionally you'll have dive sites that are not at/near stations, but not that often.

https://www.sydneymetro.info/station/blues-point-temporary-r...

https://www.sydneymetro.info/tunnelling

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