National Museum of Nuclear Science & History
E. Prendergast worked for the United States Engineer District Office.
Piper worked for Stone and Webster Engineering Corporation.
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.
Joseph LaRocco was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.