[bitt]

half-life meaning, that any location where this was scattered would be contaminated for that amount of years?

[cripplecreek]

I believe it means that the radiation lever of a substance falls by half over the given period.

[glock rocks]

half-life meaning, that any location where this was scattered would be contaminated for that amount of years?

Half life means half of it would have decayed by that length of time. In other words, this stuff would remain potent for a long long time. To answer your question, yes.

[glock rocks]

That's the chemistry. In reality, it would be cleaned up, diluted/distributed by wind and rain, etc., the bigest threat would probably be inhalation of the dust in the short term.

[Paleo Conservative]

half-life meaning, that any location where this was scattered would be contaminated for that amount of years?

No, half the atoms would have decayed in that period.

[RSmithOpt]

Nope. If you scatter 6 oz. of U-234 on a city block, in 247,000 you still have 3 oz. of radioactive U-234.

[7thOF7th]

Just a "simple" matter of scraping the top three feet of hundreds of acres of land off and burying it in Yucca Flats for say a million and a half years. No problem! (sarc)

[bayourod]

Or that it doesn't have to be refrigerated?