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A comment on Tunnel Boring Machines (2018). Parent comment

Re:Tunnel Boring Machines (2018) by herlitzj on Monday November 18, 2019 @11:25AM (#21565531)
> 4. Are there any reason why we dont use TBM for small pipes, ( like for electricity or fibre optics, )

We do. It's called a directional drill. https://www.ditchwitch.com/directional-drills

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