National Museum of Nuclear Science & History
H. B. Malter worked for the Edenfield Electric Company.
C. Lawrence worked for the J.A. Jones Construction Company.
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.
M. A. Ruth worked for the United States Engineer District Office.
