It always amazes me how seemingly careless they were with these nuclear devices back then. To know that such a devestating bomb was handled by a sultry, shirtless youngster, in a shed on a small island in the Pacific... It reminds me of the Slotin Incident ( http://www.damninteresting.com/bitten-by-the-nuclear-dragon/ ) where dr. Louis Slotin accidently slipped the screwdriver he used to separate two plutonium/uraniu…
There were a few nearly identical incidents. Another involved someone working alone after hours dropping the last block of plutonium/uranium onto a stack during criticality testing after realizing that it was going to go critical, and removing it by hand. Its pretty amazing that the test procedure for determining the critical mass was essentially "stack these blocks of plutonium/uranium (by hand) until the neutron de…
IIRC, that incident happened with the same sphere of plutonium, causing it to be called the "Demon Core".