National Museum of Nuclear Science & History
Olge W. Hess was a research assistant at the University of Chicago’s Metallurgical Laboratory.
Philipp Klein was a part-time switchboard operator in the SAM Lab while studying chemical engineering at Columbia University.
John Ursch served in the 1395th Military Police Aviation.
C. M. Robinson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
George H. Cohen served as a 1st lieutenant in the 393rd Bombardment Squadron. He was regularly assigned to the B-29 Top Secret.