"The Girls of Atomic City" - it's about the development of the Manhattan Project site in Oak Ridge, Tennessee and some of the women who worked there during World War II. the task that was being performed there was enrichment of uranium for the atomic bomb. The plants were built but there was also an entire community to support the employees and families - complete with housing, food service, health care, recreation, transportation, schools and shopping. The employees only knew their individual job roles - no one except the very highest military and civilian leaders actually knew what was going on there. It was only after the bombs were dropped that they learned what they had spent the past two years doing. It also goes on to talk about what happened to the site, the workers and the community after the war ended. It was a gated, tightly controlled, heavily guarded site.