Radioactive Fallout Effects of the Nagasaki Atomic Bomb

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Abstract
Nishiyama residents exposed to fallout from the Nagasaki atomic bomb were selected by their location and duration in the fallout area and were studied for any retained radionuclide activity and any harmful effects by whole-body counting, physical and laboratory examinations, and chromosome studies. Soil, reservoir sediments, and crops from Nishiyama and comparison areas were assessed by scintillation counting for 137Cs content. Whole-body counting and radiochemical uninalysis showed a significantly greater concentration of 137Cs among the Nishiyama subjects than the nonexposed, but no physical or laboratory abnormalities were detected among the index subjects of this study. Results demonstrated that the internally deposited material is maintained at a relatively high level by the ingestion of food stuffs containing 137Cs.