Supermax prison
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A super-maximum security or administrative maximum prison is a "control-unit" prison, or a unit within prisons, which represents the most secure level of custody in the prison systems of certain count
Alcatraz Island is a historical prototype of the supermax prison standard.
ADX Florence
Allan B. Polunsky Unit houses State of Texas supermax units.
Mississippi State Penitentiary houses State of Mississippi supermax units.
ADX Florence
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The United States Penitentiary, Administrative Maximum Facility is a United States federal prison for men in Fremont County, Colorado, United States. It is operated by the Federal Bureau of Prisons, a
Supermax prison
…some, but only very limited, due process involved in supermax placement. There is only one supermax prison remaining in the U.S. federal prison system, ADX Florence in Florence, Colorado. It houses numerous inmates who have a history of violent behavior in other prisons, with the goal of moving them from solitary…
Robert Hanssen in his cell at ADX Florence