Fast Facts: Supermax Prison

The following are some details about the United States "Supermax" Penitentiary in Florence, Colorado, where convicted terrorist Zacarias Moussaoui is expected to serve his life sentence:

— ADX is short for The United States Penitentiary, Administrative Maximum

— The ADX is one of four federal prisons in Florence, Colorado

— Florence donated the land for the prisons to the US government in 1990

— ADX employs a staff of 347 people

— ADX contains beds for 490 inmates

— ADX currently houses 404 inmates

— ADX was constructed in 1994 for $60 million

— ADX has had no escapes or serious attempts to escape

— ADX houses less than one-third of one percent of the federal inmate population

— Only five percent of ADX inmates enter directly from their court sentencing

— 95 percent of ADX's inmates are transferred there from another prison

— Inmates are divided into the general population, the High Security unit, or Control Unit

— The control unit holds the most dangerous and disruptive inmates in the Federal Prison system

— Cells range from 77 to 87 square feet in size

— Each cell contains a bed, shower, sink, toilet, metal mirror, and television/radio

— All outgoing and incoming mail as well as telephone calls are monitored

— Immediate family members, attorneys and boyfriends or girlfriends of the inmates may visit inmates

— Educational and recreational programs are played on inmates' televisions via a closed circuit system

Source: Federal Bureau of Prisons