National Museum of Nuclear Science & History
Sayers worked for Stone and Webster Engineering Corporation.
Edward Simon worked for the Roane-Anderson Company.
John L. Willoughby served as a sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Bockscar.
David L. Hill was an associate experimental physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.