July 23, 2026

NNSA removes last high-risk cesium-137 source from North Dakota

By ExchangeMonitor

The National Nuclear Security Administration (NNSA) has removed the last high-risk cesium-137 source from North Dakota, making it the 14th U.S. state or territory to eliminate high-risk quantities of the radioactive material.
The Department of Energy’s semiautonomous…

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Nuclear Security & Deterrence Monitor
Nuclear Security & Deterrence Monitor brings you timely, accurate news and information on the activities of the U.S. Nuclear Security Administration, including weapons complex, weapons dismantlement, nuclear deterrence, the weapons laboratories and nonproliferation.
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