National Museum of Nuclear Science & History
Crossett worked for Stone and Webster Engineering Corporation.
LeRoy Grigsby worked for the Roane-Anderson Company.
Fred Wilkerson served in the 1395th Military Police Aviation.
Mary Fair worked as a lab assistant at the Metallurgical Lab at the University of Chicago. She was not sure of the purpose of her work, but often used radiation detecting devices in the experiments.
McCampbell worked for Stone and Webster Engineering Corporation.