National Museum of Nuclear Science & History
R. L. Plowden worked for the J.A. Jones Construction Company.
O'Brien worked for Stone and Webster Engineering Corporation.
Francis L. Friedman was a theoretical physicist and group leader at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Originally from California, Jean Crossland was a secretary in the K-25 process area at Oak Ridge during the Manhattan Project.
