National Museum of Nuclear Science & History
Copeland worked in the United States Engineer District Office.
M. A. Obermeyer worked for the J.A. Jones Construction Company.
J. P. Sinclair worked for Clinton Laboratories at the X-10 Reactor.
Willingham worked at the 200 West Area at Hanford during the Manhattan Project.
D. D. Frazer worked for the Tennessee Eastman Corporation at the Y-12 Plant.
