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Radioactive fallout from the triple reactor disaster at the Fukushima Daiichi Nuclear Power Station, following a magnitude 9.0 earthquake and subsequent tsunami, is readily observed in soil samples collected from Japan, well beyond the exclusion zone. Samples from three regions, approximately 210 km, 550 km, and 1060 km from the Fukushima Daiichi Nuclear Power Station, were tested for gross gamma activity and radio-isotopic composition. The primary isotopes of focus were the most commonly detected radio-isotopes of Cesium, 134 Cs and 137 Cs.
Note: Another individual should be listed as a co-contributor, given their important role in providing material from Japan for testing, but their name has been left out for purposes of anonymity. To that person, go my deepest thanks.
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Please remember that this document is Open For Comment until March 11.