Minor thing: I'd once wondered when the "official Manhattan Project shoulder patch" was issued. The answer is: late August 1945. (AP wire story is from August 25, 1945.) Huh.pic.twitter.com/EMoIjWKmZy
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what does the red ring signify?
It's the Army Service Forces insignia, which is the overarching body that included the Corps of Engineers, which ran the Manhattan Engineer District.
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Ahh... I see it now. Thanks.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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