World War II security poster in Oak Ridge

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Don’t help Hitler is the message for employees during the Manhattan Project in Oak Ridge. (Department of Energy archives/Ed Westcott photo)

This entry was posted in History, Oak Ridge things, security on by .

About Frank Munger

Senior Writer Frank Munger covers the Dept. of Energy's Oak Ridge facilities and many related topics — nuclear weapons, nuclear waste and other things nuclear, environmental cleanup and science of all sorts. Atomic City Underground is, first and foremost, a news blog, but there's room for analysis, opinion and random thoughts that have no place else to go.