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Estimated Exposures and Thyroid Doses Received by the American People from Iodine-131 in Fallout Following Nevada Atmospheric Nuclear Bomb Tests is a report from the National Cancer Institute (NCI). The report contains results from a study to assess Americans' exposures to radioactive iodine-131 fallout from atmospheric nuclear bomb tests carried out at the Nevada Test Site in the 1950s and 1960s. This report was mandated by Congress under Public Law 97-414.

Results of the study show that, depending on their age at the time of the tests, where they lived, and what foods they consumed, particularly milk, Americans were exposed to varying levels of I-131 for about two months following each of the 90 tests. The report, published in full on this website, provides the technical details of this study.