National Museum of Nuclear Science & History
Joseph Kouba was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Walter Groeger worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Vaughn worked at the 200 West Area at Hanford during the Manhattan Project.
R. L. Lauderdale worked for the Tennessee Eastman Corporation at the Y-12 Plant.