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The JASON group of scientists has endorsed a plan to immediately begin building new infrastructure to produce fresh nuclear weapon cores, according to a letter written by the group’s program manager and published Monday by the Federation of American Scientists. “[W]e urge that pit manufacturing be re-established as expeditiously as possible in parallel with the focused program to understand [plutonium] aging, to mitigate against potential risks posed by [plutonium] aging on the stockpile,” reads the letter signed to Tod Caldwell at National…
