National Museum of Nuclear Science & History
Brown worked in the United States Engineer District Office.
Andrew Welch was a janitor at the Chicago Met Lab during the Manhattan Project.
Joseph Sedor served in the 390th Air Service Group.
Anthony J. (“Tony”) Matz was a procurement officer at the University of Chicago Met Lab. He helped obtain, handle, and move many of the materials for Chicago Pile-1 and witnessed it going critical on December 2, 1942.
