National Museum of Nuclear Science & History
Sidney Williams was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
Edward Czuba was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
H. R. Muldoon worked for the Union Carbide & Carbon Corporation.
Vaught worked at the 100-D Area at Hanford during the Manhattan Project.