National Museum of Nuclear Science & History
H. W. Butsch worked for the William A. Pope Company.
Andrew Rubis served in the First Ordnance Squadron.
Raymond C. Grills is an American physical chemist who worked at the University of Chicago’s Metallurgical Laboratory and at Hanford during the Manhattan Project.
Bruno Yurgaites was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.