The proposed plutonium pit facility at Savannah River Site will reconstruct a massive 500-room partially completely abandoned ...

Nearly 1,000 feet beneath the surface, scientists are preparing new experiments to study the plutonium cores of nuclear ...

The US is planning an experiment to check the effectiveness of the aging plutonium in its atomic weapons National Public ...

In a notice of intent posted earlier this month, the Department of Energy and the National Nuclear Security Administration ...

The U.S. hasn't tested a nuclear weapon in decades, and since the 1990s has used simulations and experiments to verify they're working properly. NPR was granted a rare look at how they do it.

The results suggest that the radioactive dust originated in Algeria's Reggane region, but its plutonium levels didn't match ...

No immediate changes to the Savannah River Site's role are expected now that Energy Secretary Chris Wright has been confirmed ...

Kim for the Southern District of New York said Ebisawa admitted that he "brazenly trafficked nuclear material, including weapons-grade plutonium, out of Burma," while at the same time, he worked ...

As the Department of Energy's National Nuclear Security Administration (NNSA) awaits its marching orders from the Trump ...

Acting U.S. Attorney Edward Y. Kim said Ebisawa admitted at his plea that he “brazenly trafficked nuclear material, including weapons-grade plutonium, out of Burma.” “At the same time ...

Takeshi Ebisawa, 60, of Japan, pleaded guilty in Manhattan, New York, to conspiring with a network of associates to traffic nuclear materials, including uranium and weapons-grade plutonium ...