National Museum of Nuclear Science & History
H. A. Rehnberg worked for the Kellex Corporation at the K-25 Plant.
C. M. Hart worked for the Harrison Construction Company.
L. A. Darling worked at the 100-B Area at Hanford during the Manhattan Project.
Copeland worked in the United States Engineer District Office.
Mortimer D. Abbott was a group leader in the Technical Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
