where was the manhattan project based
The Manhattan Project was a secret military project created in 1942 to produce the first US nuclear weapon. Fears that Nazi Germany would build and use a nuclear weapon during World War II triggered the start of the Manhattan Project, which was originally based in Manhattan, New York.
Under the auspices of the Manhattan Project, three main research and production facilities were established at Oak Ridge, Tennessee; at Hanford, Washington; and at Los Alamos, New Mexico. The Oak Ridge Laboratories provided uranium-235 and Hanford produced weapons-grade plutonium.