National Museum of Nuclear Science & History
Grills worked at the 100-B Area at Hanford during the Manhattan Project.
Margaret Rand was a research assistant in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
B. P. Ciaccio served in the 509th Headquarters and Base Services Squadron.
John M. Sprecher was a chemical engineer. During the Manhattan Project, he worked for DuPont in Wilmington, DE.
Arthur Weisberg was a mechanical engineer with the Special Engineer Detachment assigned to the Metallurgical Lab at the University of Chicago.