From: "Phil Payne" 

> And where would they obtain the U235 or plutonium domestically?

http://usgovinfo.about.com/library/weekly/aa081600a.htm

"Joshua Handler, past research coordinator of Greenpeace, estimates
that since 1945, 50 nuclear weapons have been lost and remain lost at sea.
The U.S. alone officially lists 11 nuclear bombs lost and never recovered
in accidents."

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