[BLANK-1] was the United States’ top-secret, expensive, and…
was the United States’ top-secret, expensive, and ambitious attempt to develop an atomic bomb before the Germans during WWII. Secret labs in Oak Ridge, Tennessee, Los Alamos, New Mexico, and other locations succeeded in refining uranium and plutonium. An atomic bomb (Trinity) was successfully detonated in July of 1945 under the supervision of J. Robert Oppenheimer. Two additional bombs would be used against Japan to hasten the end of the war.