National Museum of Nuclear Science & History
H. Hoessly worked for the Roane-Anderson Company.
M. C. Labarr worked for the Kellex Corporation at the K-25 Plant.
John Rowell was a staff worker at Los Alamos during the Manhattan Project.
Katherine Gnjec was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
