National Museum of Nuclear Science & History
Everett Ellis worked for the H. K. Ferguson Company.
Daniel J. Keefe was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Jack Rose was a machinist and armorer in the Special Engineering Detachment (SED) assigned to the 509th Composite Group in Wendover, Utah.
DePersio worked in the United States Engineer District Office.
Cummins worked in the United States Engineer District Office.
