National Museum of Nuclear Science & History
Anton Kegl was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
George O'Connell worked for the H. K. Ferguson Company.
A. V. Hendricks worked for the Tennessee Eastman Corporation at the Y-12 Plant.
William Bradshaw was a Mechanical Engineer working for the civilian contractor Tennessee Eastman at the Y-12 Plant in Oak Ridge, Tennessee.