National Museum of Nuclear Science & History
Phyllis Smith worked for the H. K. Ferguson Company.
Ralph E. Chase served in the 320th Troop Carrier Squadron.
Roy V. Henderson was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
George C. Hollowwa was a member of the Army Air Corps and a weapons expert. During and after World War II, he was involved in the assembly and testing of atomic weapons.