National Museum of Nuclear Science & History
Raymond Ledford worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Grinus worked at the 100 F Area at Hanford during the Manhattan Project.
Lawrence J. Sweitzer served in the 1027th Air Material Squadron.
Earl W. McCoy served in the 1st Ordnance Squadron.
Claire Balke was the leader of the Miscellaneous Metallurgy Division in the Chemistry and Metallurgy Division at Los Alamos during the Manhattan Project.