On Wed, 12 May 2010 03:12:13 -0400, Lawrence Watt-Evans
wrote:

On Wed, 12 May 2010 06:44:21 GMT, (Derek Lyons)
wrote:

Lawrence Watt-Evans wrote:

Dad's lab group was responsible for the shielding,

Fat Man didn't (intentionally) contain any shielding, nor did it need
any. The tamper and some other odd bits and bobs may have acted as
shielding, but that was a side effect of their primary purpose at
best.

The casing, then. "Shielding" isn't the right word, you're right.
The sleeve that went around the actual bomb mechanism.

I have decided that I should stop trying to post about this stuff
working entirely from childhood memories. I'll see if I can't find
some documentation of just what Dad's group DID do, and get back to
you.





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