O. B. Longino

Stanley Krzyck

Stanley Krzyck was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

J. H. Marsh

J. H. Marsh worked for the Kellex Corporation at the K-25 Plant.

R. J. Jones

R. J. Jones worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Leonard M. Rohrback