National Museum of Nuclear Science & History
Heinie worked for Stone and Webster Engineering Corporation.
Manuel Montes Alcalde (1921-2009) was a machinist at Los Alamos during the Manhattan Project. Alcalde was born in San Leandro, California.
Grace Wallace worked for the United States Engineer District Office.
John Crawford was a physicist and research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
