The Agency for Toxic Substances and Disease Registry (ATSDR), based in Atlanta, Georgia, is a federal public health agency of the U.S. Department of Health and Human Services. ATSDR serves the public by using the best science, taking responsive public health actions, and providing trusted health information to prevent harmful exposures and diseases related to toxic substances.
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How much do you know about uranium? Do you know that it is naturally present in nearly all rocks, soils, and air? Or that nearly everyone is exposed to low amounts of uranium in food and water?
For much of the U.S. population, uranium exposure stays at these low levels. But in the 1940s, federal surveyors found large deposits of uranium on the lands of the Navajo Nation, which covers 27,000 square miles in New Mexico, Arizona, and Utah. In fact, from 1944 to 1986, uranium mines on Navajo lands yielded almost four million tons of uranium ore.
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- Page last reviewed: February 2, 2015
- Page last updated: September 25, 2015
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