By Shannon Williams & Updated by Candice Lewis
The term Downwinder is well known in Yavapai County. Downwind radiation exposure is cited in cancer diagnoses and blamed for the deaths of long-term residents of the county.
During the Cold War, the U.S. built a huge nuclear arsenal. Above-ground testing began in 1951 in Nevada where over 100 nuclear bombs were detonated. In 1958 the U.S., U.K. and USSR agreed to stop all nuclear testing. However, the U.S. detonated several above-ground nuclear devices in 1962. January 21, 1951, to October 31, 1958, and June 30, 1962, to July 31, 1962, when above-ground testing was conducted, were later designated as Downwind time periods.
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