National Museum of Nuclear Science & History
Al Threadgill worked for the Tennessee Eastman Corporation at the Y-12 Plant.
S. L. Eisler worked for the Union Carbide & Carbon Corporation.
Fredrick “Fred” D. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Glenn Sprankle worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
