National Museum of Nuclear Science & History
Joseph Ryan was a staff worker at Los Alamos during the Manhattan Project.
T. W. Martin worked for the Tennessee Eastman Corporation at the Y-12 Plant.
E. A. Pluhar worked for the Union Carbide & Carbon Corporation.
Howard T. Parr served in the 603rd Air Engineering Squadron.
William Spindel was a member of the Special Engineer Detachments at Oak Ridge and Los Alamos. Spindel worked in a group that helped make coatings for the implosion bomb.
