Physicists in Berkeley California began working on accelerating subatomic particles in the 1920s. In 1929, Ernest O. Lawrence built the first cyclotron to accelerate subatomic particles. During World War II, a laboratory there was a part of the Manhattan Project. They were given money from the military. In 1942, Lawrence hired Arthur Brown, Jr. (designer of the Coit Tower in San Francisco) to design a new round building to hold Lawrence's new 4.67 m (184 in) cyclotron. That building, with expansions, is the one which the ALS is in today. The laboratory was a part of the United States Atomic Energy Commission until 1977 when it was moved to the U.S. Department of Energy.