A 1945 Life article estimated that before the Hiroshima and Nagasaki bombings "probably no more than a few dozen men in the entire country knew the full meaning of the Manhattan Project, and perhaps only a thousand others even were aware that work on atoms was involved."
Un artigo de 1945 na revista Life estimou que antes dos bombardeos de Hiroshima e Nagasaki «probablemente non máis dunha ducia de homes en todo o país coñecía o significado completo do Proxecto Manhattan, e quizais só outros miles sabían incluso que o traballo cos átomos estaba involucrado».