On: Tunnel Boring Machines (2018)

[LargoLasskhyfv]

I'm uninpressed because it lacks Nuclear Tunnel Boring Machines like in [1] and [2] as envisioned by [3] for [4] and [5] in 1972 and 1978. Which all Hyperloop afficionados should read, if they haven't done so already :-)

[1] https://patents.google.com/patent/US3693731 (I'm wondering about steam explosions when hitting ground water, which is not unheard of. But...NUKULAR!)

[2] https://en.wikipedia.org/wiki/Subterrene

[3] https://en.wikipedia.org/wiki/Robert_M._Salter

[4] https://www.rand.org/pubs/papers/P4874.html

[5] https://www.rand.org/pubs/papers/P6092.html (Lacking cheaply mass produced super-conductors here)