Los Alamos, New Mexico, was the site of Project Y, or the top-secret atomic weapons laboratory directed by J. Robert Oppenheimer. The site was so secret that one mailbox, PO Box 1663, served as the mailing address for the entire town. The mountains allowed the scientists ample opportunity to relax, by skiing, swimming, and hiking. But they spent most of their time in laboratories, overcoming challenge after challenge to develop the Littly Boy (gun-type) and Fat Man (implosion) atomic bombs.
Stirling Auchincloss Colgate: I’m Stirling Auchincloss Colgate. And the first name is spelled with an extra “I,” S-T-I-R-L-I-N-G. My middle name is Auchincloss, A-U-C-H-I-N-C-L-O-S-S. And that last name is Colgate, and when I was around ten or eleven years old or somewheres like that, I changed my name and chose that myself, so I’m happy about that name. I like it.
In 1942, General Leslie Groves approved Oak Ridge, Tennessee, as the site for the pilot plutonium plant and the uranium enrichment plant. Manhattan Project engineers had to quickly build a town to accommodate 30,000 workers--as well as build the enormously complex plants.