Jones Beene wrote:
It seems obvious, but I may be missing something.
How deep can our nuclear submarines operate? I think the Soviet Alphas with titanium hulls are good to 1500 m.
The good news is that nuclear subterrenes were (allegedly) used to build all those "underground bases"; so, your boring machine exists. ;-)
http://www.anomalous-images.com/text/nuclear.html
