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Supermax is the name used to describe "control-unit" prisons, or units within prisons, which represent the most secure levels of custody in some countries' prison systems. The objective is to provide long term, segregated housing for inmates classified as the highest security risks in the prison system - the "worst of the worst" criminals and those who pose a threat to national security.


An early form of supermax-style prison unit appeared in Australia in 1975, when "Katingal" was built inside the Long Bay Correctional Centremarker in Sydneymarker. Dubbed the "electronic zoo" by inmates, Katingal was a super-maximum security prison block with 40 prison cells having electronically operated doors, surveillance cameras, and no windows. It was closed down two years later over human rights concerns, and was finally demolished in late 2006.

The term "supermax," however, originated in the United Statesmarker as a portmanteau of "super-maximum," and the concept developed from the 23-year lockdown of the U.S.marker Penitentiarymarker in Marion, Illinoismarker. The lockdown, which began in 1983 and lasted until September 2006, was initiated when two corrections officer at that prison were murdered by inmates in two separate incidents on the same day. Since then, some maximum-security prisons have gone to full lockdown as well, while others have been built and dedicated to the Supermax standard.

The Federal Bureau of Prisons' solitary confinement units are known as Special Housing Units (SHU).

There is a nationwide trend in the United States to downgrade Supermax prisons, as has been done with Wallens Ridge State Prison, a former supermax prison in Big Stone Gap, Virginiamarker. Other Supermax prisons that have gained notoriety for their harsh conditions and attendant litigation by inmates and advocates are the former Boscobelmarker (in Wisconsinmarker), now named the Wisconsin Secure Program Facility, Red Onion State Prison(in Western Virginiamarker, the twin to Wallens Ridge State Prison), Tammsmarker (in Illinoismarker), and the Ohio State Penitentiarymarker. Placement policies at the Ohiomarker facility were recently the subject of a U.S.marker Supreme Courtmarker case (Wilkinson v. Austin) where the Court decided that there had to be some, but only very limited, due process involved in Supermax placement.

There is only one supermax prison in the United Statesmarker federal system, ADX Florencemarker in Florence, Coloradomarker. However, many states now have created supermax prisons, either as stand-alone facilities or as secure units within lower-security prisons. State supermax prisons include Pelican Baymarker in Californiamarker and Tammsmarker in Illinois. The USP in Marion, Illinoismarker was recently downgraded to a medium-security facility.

In September 2001, Australia opened a facility in the Goulburn Correctional Centremarker to the supermax standard. While its condition is an improvement over that of Katingal of the 1970s, this new facility is nonetheless designed on the same principle of sensory deprivation . It has been set up for 'AA' prisoners who are deemed a risk to public safety and homeland security, or believed to be beyond rehabilitation.

Prisoner life

In SHU, prisoners are generally allowed out of their cells for only one hour a day; often they are kept in solitary confinement. They receive their meals through ports, also known as "chuck holes," in the doors of their cells. When Supermax inmates are allowed to exercise, this may take place in a small, enclosed area where the prisoner will exercise alone.

Prisoners are under constant surveillance, usually with closed-circuit television cameras. Cell doors are usually opaque, while the cells may be windowless. Conditions are spartan, with poured concrete or metal furniture common. Often cell walls, and sometimes plumbing, are soundproofed to prevent communication between the inmates.


Supermax and Security Housing Unit (SHU) prisons generate controversy, as some claim that the living conditions in such facilities violate the United States Constitution, specifically, the Eighth Amendment's proscription against "cruel and unusual" punishments. In 1996, a United Nations team assigned to investigate torture described SHU conditions as "inhuman and degrading".

The U.S. government houses a number of convicted terrorists, gang leaders, spies and similar prisoners in a Supermax prison known as ADMAXmarker, the Federal administrative maximum security prison in Florence, Coloradomarker, west of Pueblomarker. Al-Qaeda terrorist Zacarias Moussaoui was sentenced to life without parole at Florence upon his conviction on May 4, 2006. Residents also include Theodore Kaczynski, a terrorist otherwise known as the Unabomber who once attacked via mail bombs, Robert Hanssen, American FBImarker Agent turned Sovietmarker spy, Terry Nichols, an accomplice to the Oklahoma City bombingmarker, and Richard Reid jailed for life for attempting to detonate explosive materials in his shoes while on board an aircraft.

Prisons with supermax facilities

United States

 Most of these facilities only contain supermax wings or sections, with other parts of the facility under lesser security measures.


Kent Institution (BC, Canada)

----Complete list of (Canadian_CSC Prisons/ Institutions------

CSC institutions


Nova Institution for Women—Atlantic Institution—Dorchester Penitentiary—Springhill Institution—Westmorland Institution --


Archambault Institution—Cowansville Institution—Donnacona Institution—Drummond Institution—Federal Training Centre—Joliette Institution—La Macaza Institution—Leclerc Institution—Montée St.-François Institution—Port-Cartier Institution—Regional Reception Centre—Sainte-Anne-des-Plaines Institution --


Grand Valley Institution for Women—Bath Institution—Beaver Creek Institution—Collins Bay Institution—Fenbrook Institution—Frontenac Institution—Isabel McNeil House—Joyceville Institution—Kingston Penitentiary—Millhaven Institution—Pittsburgh Institution—Regional Treatment Centre—Warkworth Institution—Prison for Women --


Edmonton Institution for Women—Bowden Institution—Drumheller Institution—Edmonton Institution—Grande Cache Institution—Grierson Centre—Okimaw Ohci Healing Lodge—Pê Sâkâstêw—Regional Psychiatric Centre—Riverbend Institution—Rockwood Institution—Stony Mountain Institution—Saskatchewan Federal Penitentiary--


Fraser Valley Institution for Women—Ferndale Institution—Kent Institution—Kwìkwèxwelhp Healing Lodge—Matsqui Institution—Mission Institution—Mountain Institution—Regional Health Centre—William Head Institution--

South America





Notable Supermax inmates

  • David Ayala, Infamous leader of Chicago's Gangster Two Six street gang.

Books and media portraying maximum security units

See also


  1. "USP McCreary, Visiting Regulations" accessed May 1, 2008
  2. Wilkinson v. Austin 04-495 (2005), Link to case text
  3. – California's Security Housing Units
  4. – Security Housing Unit
  5. Marion, IL
  6. Federal Bureau of Prisons

External links

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