MacArthur knew nothing about the Manhattan Project until after the bombs were dropped.
Robert J . Oppenheimer was overall director of the Manhattan Project whereas General Leslie Groves was in command of the entire project .
The Manhattan Project IS the codename. So no, there is not.
The Manhattan project
The Manhattan Project.
The atom bomb research and development were conducted under the Manhattan project.
Manhattan Project
General Leslie Groves was the leader of the Manhattan Project to develop nuclear weapons during WWII.
The Manhattan Project .
The Manhattan Project ran from 1942 to 1946.
The Manhattan Project was the beginning of the nuclear age.
While an exact date is some what hard to pin point, the general year the public knew about the project was 2012.
This question is confusing because the Manhattan Project ended in the Forties. There was a nuclear project in Washington along the Columbia River but it was not the Manhattan Project after the Forties.