Unfortunately, refined plutonium wasn’t exactly readily. When Doc Brown (Christopher Lloyd) built his DeLorean-shaped time machine in Back to the Future ...

Unlike any of the other elements we’ve covered in the “Mining and Refining” series so far, plutonium is neither mined nor refined, at least not in the traditional sense.

Meanwhile, nearly 400 kilograms, or 880 pounds, of uranium enriched to 60% purity is still publicly unaccounted for.

About 1,200 miles to the northwest of Los Alamos, at the Hanford Nuclear Site in Washington state, the U.S. government refined plutonium for use in the Trinity explosion and the Fat Man atomic ...

The plutonium refined at the site as part of World War II’s Manhattan Project fueled the atomic bomb dropped on Nagasaki, Japan, and much of the stockpile of nuclear weapons created during the ...

The first plutonium pits were created at the Los Alamos site for the Trinity test, which saw the world’s first detonation of a nuclear bomb in the desert of New Mexico.

U.S. Sen. Catherine Cortez Masto, D-Nev., first announced the removal of the plutonium, stored at the Nevada National Security Site north of Las Vegas, on Friday.