Editing Oak Ridge, Tennessee (section)

===Since World War II===
Two years after [[World War II]] ended, Oak Ridge was shifted to civilian control, under the authority of the [[United States Atomic Energy Commission|U.S. Atomic Energy Commission]]. The Roane Anderson Company administered community functions, including arranging housing and operating buses, under a government contract.<ref>{{cite web|url=http://supreme.justia.com/us/342/232/case.html |title=Carson v. Roane-Anderson Co., 342 U.S. 232 (1952) |publisher=Supreme.justia.com |date=December 31, 1946 |access-date=July 26, 2011}}</ref> In 1959 the town was incorporated. The community adopted a city manager and City Council form of government rather than direct federal control.

The [[S-50 (Manhattan Project)|S-50]] liquid thermal diffusion plant was demolished soon after the war. The K-25 building, where uranium was enriched by the [[gaseous diffusion]] process until 1985 as the [[Oak Ridge Gaseous Diffusion Plant]] (ORGDP), was demolished in 2013–15 under [[Superfund]] as well as the other nearby production and support facilities in the years after. Much of the land associated with the former ORGDP has been transferred or leased for private and federal industrial reuse or dedicated as a [[National historic park|National Historic Park]].

Two of the four major plants created for the wartime bomb production remain in use today:
* Y-12, originally used for electromagnetic separation of uranium, is now used for nuclear weapons processing and materials storage and known as the [[Y-12 National Security Complex]]. Y-12 is managed by the [[National Nuclear Security Administration]].
* [[X-10 Graphite Reactor|X-10]], site of a graphite test reactor, is now Oak Ridge National Laboratory (ORNL).The [[United States Department of Energy|Department of Energy]] (DOE) runs ORNL, a nuclear and high-tech research establishment. 
In 1983, the DOE declassified a report showing that significant amounts of [[mercury (element)|mercury]] had been released from the Oak Ridge Reservation into the East Fork Poplar Creek between 1950 and 1977. Circa 1989, a federal court ordered the DOE to bring the Oak Ridge Reservation into compliance with federal and state environmental regulations, such as [[RCRA]].<ref>[http://www.local-oversight.org/TDEC98.pdf "Status Report to the Public"] {{webarchive|url=https://web.archive.org/web/20080409163927/http://www.local-oversight.org/TDEC98.pdf |date=April 9, 2008 }}, The Tennessee Department of Environment and Conservation, December 1998. Retrieved March 20, 2008.</ref> In addition, the Oak Ridge Reservation was put on the [[United States Environmental Protection Agency|Environmental Protection Agency's]] [[National Priorities List]] as a [[Superfund site]].

Oak Ridge National Laboratory is the largest multipurpose lab in the DOE's [[United States Department of Energy National Laboratories|National Laboratory system]]. It is home to the [[Spallation Neutron Source]], a $1.4&nbsp;billion project completed in 2006, and "[[Titan (supercomputer)|Titan]]", one of the world's most powerful scientific supercomputers, which has peak performance of more than one quadrillion operations per second. In June 2018 [[IBM]] and ORNL unveiled [[Summit (supercomputer)|Summit]], the "world's fastest supercomputer", claimed to be more than twice as powerful as the previous world leader, with a peak performance of 200,000 trillion calculations per second.{{Citation needed|date=February 2025}}

The [[Y-12 National Security Complex]] is a component of the U.S. nuclear weapons complex. The DOE's Environmental Management office is conducting an extensive program of [[decontamination]] and [[nuclear decommissioning|decommissioning]], environmental cleanup, and waste management to remove or stabilize the hazardous residues remaining from decades of government production and research activities.

Oak Ridge's scientific heritage is curated in the [[American Museum of Science and Energy]]. Its role in the Manhattan Project is preserved in the [[Manhattan Project National Historical Park]] (along with sites in [[Hanford, Washington]] and [[Los Alamos, New Mexico]]), run cooperatively by the [[National Park Service]] and the Department of Energy. A bus tour and several virtual tours are available for the public.<ref>{{cite web | url=https://www.ornl.gov/content/come-see-us | title=Come see us &#124; ORNL }}</ref>