PBS had a film on the WWII urnanium project...covered it well...the trick is to bring 2 (or more) subcritical lumps together rapidly....done with a shaped charge on two hemispheres of uranium.
26 posted on 08/08/2007 1:57:17 PM PDT by spokeshave
(Hey GOP...NO money till border closed and criminal illegals deported)
You have the correct theory of how to detonate a nuclear fission weapon. (The H-Bomb, which is a fusion weapon, uses a fission bomb as a trigger.) However, making this bomb work in a fission weapon is much more complicated than getting a bucket full of material and hitting it with a big hammer to push it into a critical mass.