posted on Nov, 1 2005 @ 10:20 PM
I don't think that is actually possible. Nuclear explosions don't work that way. Not yet, anyway. Nuclear explosions make a "big bubble" of
destruction. Punching a long narrow hole in the ground, that would be so different, it probably wouldn't be called nuclear at all.
The detonation of the nuclear device requires it to be surrounded by special shaped charges in order to maximize the yield. That isn't the same as
shaping the results of a nuclear explosion.
In addition, current speculation on "bunker buster" nuclear weapons, would also have to have a method of punching through steel, dirt, concrete.
That wouldn't be a shaped charge for that, more likely just high speed, and hard materials.
Here's a good article on punching holes in the ground:
Robust Nuclear Earth Penetrator