National Museum of Nuclear Science & History
M. E. Gregson worked for the Roane-Anderson Company.
Manuel Montes Alcalde (1921-2009) was a machinist at Los Alamos during the Manhattan Project. Alcalde was born in San Leandro, California.
W. M. England worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
