I understand that and "fatman" was a fusion bomb, which is the compacting of fissionable material to the point of nuclear fusion. Which is much more powerful and is less likely to accidents and is the process with which the USA's bombs have been made every since.
Rove is sitting there letting this build. Tomorrow he will come out and totally hit Kerry it the head with it.
Waiting patiently.
Fatman was not a fusion bomb. Period. Stop digging.
http://people.howstuffworks.com/nuclear-bomb6.htm