----------------------------Original message---------------------------- <<A colleague of mine is trying to find an American film, presumably from a major studio, about the development of the Atomic Bomb at Los Alamos. He says it was made some time between 1947 and 1950.>> I think the film you are referring to is "The Bginning or the End", a 1947 MGM film which, in simplistic semi-documentary style, recreated the Los Alamos project. It was directed by Norman Taurog (!) and starred Brian Donlevy, Robert Walker and Hume Cronyn. I have no idea if it is available on video, but it is owned by Turner Pictures. NOTE: Do NOT confuse with the 1957 "The Beginning of the End" which is an amzingly inept low-grade horror film about giant grasshopers. Gene Stavis, School of Visual Arts - NYC