National Museum of Nuclear Science & History
Edward Smith was a chemical engineer employed by the civilian contractor Eastman Kodak at the K-25 Plant in Oak Ridge, Tennessee.
R. W. McElwee worked for the Union Carbide & Carbon Corporation.
R. L. Campbell worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Heuer worked at the 300 Area at Hanford during the Manhattan Project.