[Chairman Fred]

Strontium behaves chemically very much like calcium. I'm assuming that the isotope is SR-90 (which is very nasty stuff indeed), which, if ingested, would go directly to the bones, where it would burn out the marrow and thus induce leukemia. Ugly.

[RightWhale]

Sr90 is the reason for the international ban on above ground nuclear testing. It was showing up everywhere. Only took a couple thousand tests to wake up our atomic-brained leaders.