National Museum of Nuclear Science & History
Hayes worked in the United States Engineer District Office.
Manuel Montes Alcalde (1921-2009) was a machinist at Los Alamos during the Manhattan Project. Alcalde was born in San Leandro, California.
Robert E. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
D. S. Earl worked for the Tennessee Eastman Corporation at the Y-12 Plant.
