Navajo Nation encompasses more than 27,000 square miles within Utah, New Mexico and Arizona in the Four Corners area. The unique geology of the region makes the Navajo Nation rich in uranium, a radioactive ore in high demand after the development of atomic power and weapons at the close of World War II. Many private entities, including Cyprus Amax (a successor-in-interest to Vanadium Corporation of America and Climax Uranium Company) and Western Nuclear, mined approximately thirty million tons of uranium ore on or near the Navajo Nation between 1944 and 1986. The federal government, through the Atomic Energy Commission (AEC), was the sole purchaser of uranium until 1966, when commercial sales of uranium began. The AEC continued to purchase ore until 1970. The last uranium mine on theowned businesses. The settlement announced today includes 10 priority mines and is expected to create many jobs for Navajo workers.

This settlement agreement resolves the claims of the United States on behalf of EPA against Cyprus Amax and Western Nuclear; of the Navajo Nation against the United States, and against Cyprus Amax and Western Nuclear; and of Cyprus Amax and Western Nuclear against the United States. Cyprus Amax and Western Nuclear agree to perform removal site evaluations, engineering evaluations and cost analyses, and cleanups at the 94 mines. In return for that commitment, the United States, on behalf of the Department of the Interior and the Department of Energy, agrees to place $335 million into a trust account to help fund the cleanup.

In April 2014, the Justice Department and