National Museum of Nuclear Science & History
F. M. Downs worked for the J.A. Jones Construction Company.
Mangold worked in the 200 West Area at Hanford during the Manhattan Project.
Kopanski worked at the 200 East Area at Hanford during the Manhattan Project.
R. Boyd worked for the Comstock-Bryant Electric Company.
W. B. Parsons worked for the United States Engineer District Office.
