Title Aerial View of K-25 Subject Manhattan Project (U.S.) Description This aerial photograph depicts K-25 and the surrounding area. K-25 was one of the uranium enrichment facilities at Oak Ridge that produced uranium for the Manhattan Project. K-25 was horseshoe shaped and covered an area of 44-acres. In the upper part of the photograph can be seen "Happy Valley," which was the residential area where construction workers and plant laborers lived. Creator Records of the Atomic Energy Commission, Record Group 326 Source Formerly Classified Correspondence Files, 1942-1947 Date 1944-1946 Rights National Archives at Atlanta Format Still Image Language English Identifier ARC Identifier 1518690