National Museum of Nuclear Science & History
L. C. Danielson worked for the J.A. Jones Construction Company.
Leslie Seward worked for the United States Engineer District Office.
R. B. Williams worked for the Union Carbide & Carbon Corporation.
John Costa worked at the shop in the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
H. M. Schleiden worked for the A. S. Schulman Electric Company.
