[Mauser720]

Ron -

Extremely interesting. Thank you for the explanation.

I think it is correct that even though it does not glow any more, it is still radioactive. I have a sample of radioactive ore (uranium) that came with a child's chemistry set. I checked it with a geiger counter and it is still giving off radiation. Now today if you tried to sell a child's chemistry set that came with radioactive ore, I'm sure you'd never be allowed to do so.

It might be interesting to check your sights with a geiger counter and just see what they are doing.

Mauser720 - Ron