National Museum of Nuclear Science & History
H. M. Ellis, Jr. worked for the Roane-Anderson Company.
James C. Hart was a DuPont chemist and member of the health physics group during the Manhattan Project.
Royal H. Mohr served as a staff sergeant in the 393rd Bombardment Squadron.
Dr. Lloyd F. Craver was a consultant for the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.