National Museum of Nuclear Science & History
A. M. Hartman worked for the Roane-Anderson 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.
Bellande worked at the 200 West Area at Hanford during the Manhattan Project.
W. L. Richardson worked for the Union Carbide & Carbon Corporation.
