[Pox]

I believe such monitoring is readily available and still untainted by the hand of bureaucrats.

http://www.nps.gov/history/history/online_books/swcrc/37/chap2.htm

http://www.bikiniatoll.com/whatrad.html

http://www.theguardian.com/world/2014/mar/02/bikini-atoll-nuclear-test-60-years

It's still claimed to be unlivable after 60 years, but I would take that with a grain of salt if you consider Hiroshima and Nagasaki with the caveat the both Japanese sites were actively “decontaminated” while the Bikini Atoll was not.

[The Antiyuppie]

“It’s still claimed to be unlivable after 60 years, but I would take that with a grain of salt if you consider Hiroshima and Nagasaki with the caveat the both Japanese sites were actively “decontaminated” while the Bikini Atoll was not.”

That atoll blast(s) actually hit the ground, I think that those may have been hydrogen based, and blew part of the atoll itself away; the Japan blasts were in the air which is “cleaner”.