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Geiger counters are so last summer. Lasers can detect radioactive material too, y'know

Headley_Grange Silver badge

The laser one couldn't detect a source inside a lead box unless they had contaminated to the outside of the box when packing it. Muon tomography might be able to depending on what the source was and how much of it there was.

To get a source inside a lead box into the US would require the cooperation of the port of departure cos it would set off the baggage scanners on the way out.

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