National Museum of Nuclear Science & History
Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Howard Gest worked for Clinton Laboratories at the X-10 Reactor. Gest was one of the scientists who signed Leo Szilard’s petition against the use of the atomic bomb.
William Kann was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
