Control panels and operators for <a href="https://en.wikipedia.org/wiki/calutron" class="extiw" title="w:calutron">calutrons</a> at the <a href="https://en.wikipedia.org/wiki/Y-12_National_Security_Complex" class="extiw" title="w:Y-12 National Security Complex">Y-12 Plant</a> in <a href="https://en.wikipedia.org/wiki/Oak_Ridge,_Tennessee" class="extiw" title="w:Oak Ridge, Tennessee">Oak Ridge, Tennessee</a>. During the Manhattan Project the operators worked in shifts covering 24 hours a day. Gladys Owens, the woman seated at right closest to the camera, was unaware of the purpose and consequence of her work until seeing the photo of herself while taking a public tour of the facility nearly 60 years later.
Ed Westcott / US Army / Manhattan Engineering District<a rel="nofollow" class="external autonumber" href="http://sunsite.utk.edu/westcott/">[1]</a>
between circa 1943 and circa 1945 <div style="display: none;">date QS:P,+1943-00-00T00:00:00Z/8,P1319,+1943-00-00T00:00:00Z/9,P1326,+1945-00-00T00:00:00Z/9,P1480,Q5727902</div>
Ed Westcott / American Museum of Science and Energy, other versions available at <a rel="nofollow" class="external free" href="http://smithdray1.net/angeltowns/or/go.htm">http://smithdray1.net/angeltowns/or/go.htm</a> and <a rel="nofollow" class="external free" href="https://www.flickr.com/photos/amse/2965052816/">https://www.flickr.com/photos/amse/2965052816/</a>