National Museum of Nuclear Science & History
Charles J. Spiegl was a civilian scientist employed by the Manhattan Project. He was involved in radiation toxicology, studying the effects of radiation on animals at the Trinity Site near Alamogordo, New Mexico.
John C. Delmar, Jr. served in the 603rd Air Engineering Squadron.
Stanley Krzyck was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
K. B. Brown worked for the Tennessee Eastman Corporation at the Y-12 Plant.
