Those incarcerated in supermax housing have minimal contact with staff and other inmates", a definition confirmed by a majority of prison wardens.
[1] In 2001, academics Leena Kurki and Norval Morris wrote that there was no universal, agreed upon definition for "supermax" and that prisons are classified inconsistently.
These decisions are made as administrative protection measures and the prisoners in a supermax are deemed by correctional workers as a threat to the safety and security of the institution itself.
One criticism is that the living conditions in such facilities violate the United States Constitution, specifically, the Eighth Amendment's proscription against "cruel and unusual" punishments.
[4] A 2011 New York Bar Association comprehensive study suggested that supermax prisons constitute "torture under international law" and "cruel and unusual punishment under the U.S.
In September 2001, the Australian state of New South Wales opened a facility in the Goulburn Correctional Centre to the supermax standard.
[8][9] It has been set up for 'AA' prisoners who have been deemed a risk to public safety and the instruments of government and civil order or are believed to be beyond rehabilitation.
Corrections Victoria in the state of Victoria also operates the Acacia and Melaleuca units at Barwon Prison which serve to hold the prisoners requiring the highest security in that state including Melbourne Gangland figures such as Tony Mokbel, and Carl Williams, who was murdered in the Acacia unit in 2010.
Previously, high-risk inmates were housed at a prison on Anchieta Island; however, that closed down after a bloody massacre.
"[12] The British government formed the Control Review Committee in 1984 to allow for regulating long-term disruptive prisoners.
[14] The United States Penitentiary Alcatraz Island, opened in 1934, has been considered a prototype and early standard for a supermax prison.
[15] A push for supermax prisons began in 1983, after two correctional officers, Merle Clutts and Robert Hoffman, were stabbed to death by inmates at Federal Penitentiary in Marion, Illinois.
However, it is best known for housing several inmates who have been deemed either too dangerous, too high-profile or too great a national security risk for even a maximum-security prison.
[16] They include several prisoners convicted of domestic and international terrorism, such as Timothy McVeigh and Terry Nichols, who perpetrated the Oklahoma City Bombing; Richard Reid and Umar Farouk Abdulmutallab, who separately attempted to detonate explosives on a commercial airplane flight; and Dzhokhar Tsarnaev, convicted for the 2013 Boston Marathon bombing.
There is no set definition of a supermax prison; however, the United States Department of Justice and the National Institute of Corrections do agree on their purpose: "these units have basically the same function: to provide long-term, segregated housing for inmates classified as the highest security risks in a state’s prison system.
The Centro de Confinamiento del Terrorismo (CECOT) was inaugurated on 31 January 2023 which housed 40,000 inmates of a capacity, CECOT became the first largest prison in not just Central America, but the whole of Latin America: In Brazil, the "regime disciplinar diferenciado" (differentiated disciplinary regime), known by the acronym RDD, and strongly based on the Supermax standard, was created primarily to handle inmates who are considered capable of continuing to run their crime syndicate or to order criminal actions from within the prison system, when confined in normal maximum security prisons that allow contact with other inmates.