Thomas Jefferson National Accelerator Facility (TJNAF), Virginia

A federal nuclear physics research facility established in 1984, home to the Continuous Electron Beam Accelerator Facility. Employs around 675 people, and is located on 273 acres. Owned by the Department of Energy, and operated by an association of universities. Also known as Jefferson Lab, the accelerator tunnel is 7/8th of a mile long. The lab also houses one of the most powerful free electron lasers in the world.