National Museum of Nuclear Science & History
Mary Thomas worked for the J.A. Jones Construction Company.
W. B. Hembree worked for the Roane-Anderson Company.
Henry Brzostowski worked for the Roane-Anderson Company.
S. L. Ashburn worked for the Roane-Anderson Company.
Charles Maier was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
