Keywords: Y-12 Calutron operators.jpg Calutron Operators monitored various components of the machine used to separate isotopes of uranium Calutron operators were predominately female and worked in shifts 24 hours a day Creator Records of the Atomic Energy Commission Record Group 326 Source Formerly Classified Correspondence Files 1942-1947 Date ca 1944 Rights National Archives at Atlanta Format Still Image Language English Identifier ARC Identifier 1518690 2013-02-22 06 25 16 http //nationalarchivesatlanta omeka net/items/browse/tag/Manhattan+Project National Archives Manhattan Project PD-USGov Uploaded with UploadWizard Manhattan Project Y-12 National Security Complex |