[AnimalMuppet]

I don't think this is quite right. Little Boy (Hiroshima) was test-fired at Trinity. Fat Man (Nagasaki) was the one that was dropped without ever being tested, but it was plutonium.

[wefarrell]

Both the Trinity test and Fat Man were implosion type weapons:

http://en.wikipedia.org/wiki/Nuclear_weapon_design#Implosion...

I don't think Little Boy's design was tested prior to being dropped on Hiroshima.

[AnimalMuppet]

Ah. My error, I thought Trinity was a uranium/Little Boy type.