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A comment on A KGB agent shipped a Sidewinder missile by mail to Moscow (2017). Parent comment

Re:A KGB agent shipped a Sidewinder missile by mail to Mosco... by DoofusOfDeath on Thursday January 31, 2019 @12:41PM (#19046753)
Perhaps a very naive, question, but:

If someone were smuggling a radioactive weapon into DC, couldn't they just shield it with a lot of lead?

I'm guessing that your small-dog example would have been different if it were in a thick lead crate.

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Re:A KGB agent shipped a Sidewinder missile by mail to Mosco... by erbium on Thursday January 31, 2019 @04:16PM (#19048952)
Lead is permeable to gamma rays.
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Re:A KGB agent shipped a Sidewinder missile by mail to Mosco... by TheOtherHobbes on Friday February 01, 2019 @08:06AM (#19053741)
Lead is quite a good gamma shield. It's modestly permeable to neutrons and high energy electrons.

It's really not hard to hide both neutron and gamma emissions, especially if you have a large enough container, like a ship's hold.

I would absolutely expect any nuclear exchange to start with ground-based stealth attacks.

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