When we were kids, my brother bought a spent 30 mm GAU-8A bullet and kept it around on his desk. Were all of the rounds depleted uranium? We knew it could be DU, but didn't have a scintillation counter, and didn't bother to measure its density. He just kept it far from his bed and his food.

I know solid uranium metal isn't so bad, and armor piercing shells typically have a tungsten or DU core covered with lead (if nothing else, to keep the super hard core from abrading the barrel).

It must have been solid lead, or lead jacketed tungsten, right? My brother has 4 perfectly healthy kids, but I could imagine some kid keeping a DU shell in his/her pocket, in close proximity to their gametes for years.