National Museum of Nuclear Science & History
R. B. Somers worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Clatworthy worked at the 200 West Area at Hanford during the Manhattan Project.
Clifford Nilsson served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
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.