National Museum of Nuclear Science & History
Jones worked for Stone and Webster Engineering Corporation.
Gus Essig began working on the Manhattan Project in May, 1946 in Dayton, Ohio. Essig was selected to work in the highly classified initiator program and spent several months at Los Alamos learning how to design and construct initiators.
L. V. Withers worked for the Roane-Anderson Company.
Frey worked in the United States Engineer District Office.
