The Beginning or the End Cast & Crew
Brian DonlevyMaj. Gen. Leslie R. Groves Robert WalkerCol. Jeff Nixon Beverly TylerAnne Cochran Hume CronynDr. J. Robert Oppenheimer Audrey TotterJean O'Leary Hurd HatfieldDr. John Wyatt Joseph CalleiaDr. Enrico Fermi Godfrey TearlePresident Franklin D. Roosevelt Richard HaydnDr. Chisholm Jonathan HaleDr. Vannevar Bush Henry O'NeillGen. Thomas F. Farrell Warner AndersonCapt. William S. Parsons Bobby JordanRadioman on Tinian Receiving A-Bomb Message Jerry SchumacherNazi Officer Edwin B. WillisSet Decoration F. Keogh GleasonSet Decoration Cedric GibbonsArt Direction Ray JuneDirector Of Photography Frank E. MyersAssistant Director Stanley GoldsmithAssistant Director Daniele AmfitheatrofOriginal Music Composer 
