National Museum of Nuclear Science & History
Jas Major worked for the Kellex Corporation at the K-25 Plant.
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.
O. H. Moyer worked for the J.A. Jones Construction Company.
L. D. Larkin worked for the H. K. Ferguson Company.
