GRAND CANYON NATIONAL PARK, Ariz. (AP) — Authorities say final findings show there's no radiation exposure from uranium ore samples that poses a health risk for employees and visitors at Grand Canyon National Park.
For years, the federal government just didn't know what to do with its stockpile of Uranium 233. The experimental fuel had been created as an alternative to naturally occuring uranium, but was abandoned by the government in the 1970s.
In the early years of the atomic age, the federal government went into overdrive to ensure that enough uranium was available for the Manhattan project and then the expanding nuclear arsenal during the Cold War. But that process left Navajo country exploited and soaked with radioactive materials.