National Museum of Nuclear Science & History
Paul Sperling was a staff worker at Los Alamos during the Manhattan Project.
Butscher worked for Stone and Webster Engineering Corporation.
H. R. Kornburg worked for the J.A. Jones Construction Company.
Leonard Krouldis was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Jack Robinson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
