Re:Tunnel Boring Machines (2018)
by theptip on Tuesday November 19, 2019 @04:13PM
(#21578364)
> there is only so much space below us
Is this actually a practical limitation? You could go a mile deep, and pack the tunnels way more densely than roads on the surface (since we don't need to put buildings in between the roads).
Is this actually a practical limitation? You could go a mile deep, and pack the tunnels way more densely than roads on the surface (since we don't need to put buildings in between the roads).