But Brad Peck, a spokesman for the reactor's operator, Energy Northwest, said the reactor was stable and the alert was canceled at 11:57 a.m., about two hours after it was declared.

The new federal energy secretary has put on hold for 90 days an end-of-term decision from the Clinton administration to permanently shut down an experimental reactor at the Hanford Nuclear ...

B Reactor also produced plutonium for the atomic bomb dropped on Nagasaki, Japan, Aug. 9, 1945, just weeks after the Trinity Test. Japan surrendered Aug. 15, 1945, ending World War II.

The B Reactor at the Hanford site was the world’s first full-scale nuclear reactor. Here, scientists and engineers pioneered the technology behind nuclear reactors.

If you’ve been planning to tour Hanford’s historic B Reactor, part of the Manhattan Project National Historical Park, don’t procrastinate. After the current tour season ends Nov. 18, no more ...

Richland, WA Editor’s note: On Oct. 16, 2024, about 100 Tri-Cities area leaders and people who worked to preserve Hanford’s historic B Reactor as part of the Manhattan Project National ...

Sept. 26 marks 80 years since the B Reactor first went online. We get a tour from Terri Andre, a volunteer docent at the Manhattan Project National Historical Park at Hanford.

Amazon is offering almost $334 million for a multiyear feasibility study of a cluster of small modular reactors to be built at Hanford. “It was Amazon that stepped up,” Cullen said.