Published: October 26th, 2013 at 11:27 am ET
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Physicians for Social Responsibility, IPPNW, etc., Oct. 18, 2013: [...]  the emission of radioactive particles from Fukushima Dai-ichi continues until today and that the available source term [i.e. total radioactive release] estimates only deal with the emissions during the first weeks of the disaster, it is important to look at which source term estimate to use [...] UNSCEAR [United Nations Scientific Committee on the Effects of Atomic Radiation] bases its calculations on the source term estimate of the Japanese Atomic Energy Agency (JAEA), an organization that was severely criticized [...] for its collusion with the nuclear industry [...] The renowned Norwegian Institute for Air Research (NILU) found a release of cesium-137 three times higher than the JAEA estimate. [...] By relying on data from neutral international institutions rather than the Japanese nuclear industry, accusations of selective data sampling could be reduced. Also, it is important to include not only iodine-131 and cesium-137 in atmospheric release assessments, such as JAEA, but also radioisotopes such as iodine-133, strontium-89/90 and plutonium-isotopes, as they were also detected in soil, groundwater and sediment samples in Fukushima Prefecture.
Nuclear Regulatory Commission FOIA ML12128A322, Published May 1, 2013: Page 8 — “Pu contamination in soil thought to be coming from the reactors”
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 Full article by Arclight2011