hillbille, I was researching lab supply sites for blackpowder making stuff and ran across one where the guy sold all sorts of weird stuff. He was selling some lead canisters that if I remember correctly were called "pigs". The came from nuke labs and had held nuke materials such as isotopes. Apparently they are not radioactive since a major lab or govt. site would hardly turn them over to the public market.................or would they???????
http://www.unitednuclear.com/radmax.htm
If you're really worried, they have a great selection of safety equipment...check out the Decon Spray.