National Museum of Nuclear Science & History
A. Olson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
M. E. Ridge worked for the United States Engineer District Office.
Hannibal Fraga was an engineer. He joined the Manhattan Project in the fall of 1944. He worked in the inspection department at Los Alamos.
Irving Bubos was a research assistant in the Metallurgical Laboratory (“Met Lab”) at the University of Chicago during the Manhattan Project.
