National Museum of Nuclear Science & History
Ossie Parker worked for the Edenfield Electric Company.
John H. Martens was a research associate and chemist at the University of Chicago Met Lab and a member of the Special Engineer Detachment at Oak Ridge.
Butler worked at the 300 Area at Hanford during the Manhattan Project.
M. L. Jackson worked for the J.A. Jones Construction Company.
Hughes worked for Stone and Webster Engineering Corporation.
