National Museum of Nuclear Science & History
Cloud worked for Stone and Webster Engineering Corporation.
Dahleen worked in the United States Engineer District Office.
Winston Dabney served in the U.S. Army Corp of Engineers and worked on the Manhattan Project from 1941 until 1945 while he was stationed at Los Alamos.
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.