National Museum of Nuclear Science & History
Smith worked at the 200 Area at Hanford during the Manhattan Project.
William Hinch was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Arnold E. Sleipnes served as a techical sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Top Secret.
H. R. Muldoon worked for the Union Carbide & Carbon Corporation.
