National Museum of Nuclear Science & History
J. B. Mullins worked for the J.A. Jones Construction Company.
J. E. Dooley worked for the Roane-Anderson Company.
Kopanski worked at the 200 East Area at Hanford during the Manhattan Project.
Robert Leroy Platzman was a chemist at the University of Chicago Metallurgical Laboratory during World War II.
D. M. Ellett is a mechanical engineer who joined the Manhattan Project after the end of World War II.
