Web Date: January 29, 2009
One of the oldest known samples of plutonium has been dug up from a waste trench in Hanford, Wash., near the now-decommissioned nuclear production site along the Columbia River. During the process of figuring out the plutonium's origin and history, a new technique emerged that may help nuclear scientists identify the age and source of trafficked nuclear material.
The sample hails from one of the first attempts to produce weapons-grade plutonium during the Manhattan Project . . .
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