SEATTLE — For much of the 20th century, a sprawling complex in the desert of southeastern Washington state turned out most of the plutonium used in the nation’s nuclear arsenal, from the first atomic ...

Some of the sites of the Manhattan Project, which led to the development of the atomic bomb during World War II, may become a national park. The U.S. government is considering a proposal to turn three ...

FILE - A caution sign is shown on a road on the Hanford Nuclear Reservation on June 2, 2022, in Richland, Wash. (AP Photo/Ted S. Warren, File) SEATTLE (AP) — For much of the 20th century, a sprawling ...