Researcher discusses hot particles of americium found in Tokyo — Comes from plutonium (VIDEO)

Published: December 11th, 2011 at 11:15 am ET


Comment by Worcester Polytechnic Institute researcher Marco Kaltofen:

“While americium is found at much lower concentrations in our samples than is iodine or cesium, individual hot particles were detected that did contain americium as the primary radioactive component.”

Kaltofen’s presentation slide:

“Am-­‐241 found offsite only in one Tokyo-area dust sample”

New Video of Scientist Kaltofen Presenting to American Public Health Association, Fairewinds Associates, Inc, Dec. 8, 2011:

At 13:00 in

“This is one of the very few particles where we found Americium, which is a byproduct of plutonium decay”

New Video of Scientist Kaltofen Presenting to American Public Health Association from Fairewinds Associates on Vimeo.

Published: December 11th, 2011 at 11:15 am ET


Related Posts

  1. “Very high concentrations” of hot particles in Pacific NW during April, May — Includes plutonium and americium (AUDIO) June 29, 2011
  2. Gundersen: This video “confirms our worst fears” — Scientist: Reactor core materials found almost 500 km from Fukushima plant — 40,000,000,000,000,000,000 Bq/kg — Can travel very, very significant distances — Hot particles found in 25% of samples from Tokyo and Fukushima (VIDEO) April 3, 2014
  3. Researcher: Indoor air filter just north of Tokyo contaminated with 230 picocuries/ft² during September — We’re finding radiation increasing in food chain (VIDEO) December 9, 2011
  4. Hot particles found at 2 out of 3 US monitoring stations during April, including Boston — “There will be an increase in cancers, especially on the West Coast” says nuke expert (VIDEO) November 1, 2011
  5. University Researcher: We’ve seen radioactive ‘rain-outs’ in Oregon and Washington — Areas with “a lot more radiation” (VIDEO) November 7, 2011

18 comments to Researcher discusses hot particles of americium found in Tokyo — Comes from plutonium (VIDEO)

  • thelili

    Well there you are. If the APHA knew in late October then every politician in California knew by that next week.

    If every Californian politician knew in November that plutonium was being released you can bet everyone else in every state knew shortly after that.

    Lol Bad Moon Rising just came on Pandora.


  • “If we had let the government do this work I don’t think we would ever would have known the severity of the problem in Japan.” – Arnie Gunderson

    We must take control of the information that is being analyzed.

    How about taking control of or at least having a say as to our destinies.

  • Does anyone know where there is a complete list of all of the nuclear breakdown products from a nuclear accident?

    In other words, starting with what is inside the nuclear reactor, what comes out and how long does it last, and what does it break down to, over what period of time?

    I have not been able to find a complete list or chart showing all of the daughter products from even one nuclear element, much less all of the ones found inside of a meltdown, meltthrough..

  • thelili

    @Agreenroad I am not sure what you are asking as no one scientist is clear on which components were used to create the MOX fuels. Do you mean with Fukushima or Chernobyl or in general?

  • aigeezer aigeezer

    Wow, the link in the article labeled “comment by… Kaltofen” takes me to one of the most troll-infested sites I’ve ever seen, full of yucky ad hominem nastiness, and FUD galore. The page says it is the Department of Nuclear Engineering, at Berkeley.

    That said…

    Kaltofen is a fairly easy target, academically speaking, because he is physically far away from the Fukushima action, his credentials are lightweight (seen through an academic lens), and he is supported by Arnie.

    I keep waiting to see major condemnation of the nuke industry from big names at MIT, Caltech, Stanford, and so forth, and it never seems to come. The implications distress me. Are all the academic heavyweights in the pocket of the industry? Are they too timid to speak up? Are we wrong in thinking that the nuke situation is a major disaster? What (exactly) does it all mean (he asks rhetorically, but fearfully).

  • lam335 lam335

    I want to know more about the Americium that may have been detected in New England. When are we going to here details about this? In what kinds of concentrations was it detected? When exactly was it detected–did this stuff start arriving at the same time as the iodine and cesium, or did it take longer to get here? He seems to indicate that elevated alpha/beta particles were ONLY detected in Seattle and New England (Boston, I think), which is surprising since he had monitors in Hawaii and San Francisco too.

    I’m thankful that he has done this research and has released some of his data, but I wish he would tell us more about what he detected in the U.S., including beyond the West Coast.

    • SnorkY2K

      Does anyone have access to an electron microscope with x-ray backscatter analysis. This would be the most complete way to examine a piece of air filter. The one that I used (someone else ran it for me at McCrone for $750/hr) would give us readings of everything on the surface. But, our sample area was limited to about 4cm. The smaller the surface, the less likely you are to observed dilute distributions though

  • thelili

    @Majia when the trip gets closer remind us so that we can send cash your way to help with expenses.


  • oscar419

    hehehe…. I grew up near whoopie…er WPI. Maybe just maybe I have partied there once, twice or perhaps thrice. Very respectable Educational Institution…

    @lam..I would like to know that stuff as well. Worcester may B a good candidate for where the samples were taken as well, it is about an hour from Bawstahn on the “pike”

  • bleep_hits_blades


    You might check out the whole anthropogenic global warming meme. Seems it is another ‘op’ to get us to accept more govt. restrictions and intervention – and justify imposing more taxes/restrictions. More Big Brother in short.

    Seems the warming if any (their data not to be accepted trustingly and unquestioningly, as Fukushima has certainly brought to our attention) has to do with sun spot activity, not human produced CO2 gasses. If you google this you should find quite a lot of information. The planet had a history of warming and cooling cycles that predate human activity/production of CO2.

  • Radio VicFromOregon

    If you’re really serious about learning about global warming, which is separate from how governments do or don’t react to it, read a little further. We are actually in a solar winter. Just coming out of one. We are also in an interglacial cooling period on earth, but the warming is so intense that the cooling becomes minimal. And, yes, they can take air samples and see just what kinds of gases and particles are in the air and can determine whether a volcano or a Volvo is to blame. Global warming research actually IS science. Trying to debunk it as government take over or greenies whining about the weather is often little more than dressed up speculation. Looks good, but, take the clothes off and you can start to see just how skinny and scrawny the debunkers arguments are. There was a single study done that chose to use higher numerical results from a computer model rather than the lower numbers which could indicate that global warming was moving at a faster pace than previously believed. This was viewed by conservatives as “inflating the numbers”. However, the study all in all stood up to scrutiny. Within its pages were all the numerical values, as well as the reasoning used by the researchers who preferred their values over the others. They weren’t hiding anything. They were revealing everything, and in print no less, for all the world to see. If we could get the kind of attention to detail that climatologist give to global warming focused on low level radiation poisoning by nuclear physicists and doctors, we could all be discussing numerical values rather than whether something is even a reality or not.