National Museum of Nuclear Science & History
Clair Tellefson was a staff worker at Los Alamos during the Manhattan Project.
Henry McDonald, Jr. worked for the United States Engineer District Office.
A. P. Kelly worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
