A cube of uranium is displayed at the National Museum of Nuclear Science and History in New MexicoSusan Montoya Bryan/AP/Shutterstock
A method to prove the origin of uranium cubes believed to have been salvaged from the Nazi atomic bomb programme could help law enforcement investigate illegal trafficking of nuclear material.
The Nazis had two nuclear weapons programmes during the second world war. Some 1200 cubes of uranium were created, and approximately 600 made their way to the US in the closing stages of the war, according to Jon Schwantes at the Pacific Northwest …

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