Unspeakable Times
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Famous Prisoners at ADX Florence Facility

Updated February 22, 2021 370.2k views64 items

The United States Penitentiary ADX is a federal supermax prison located in Colorado - and it is the prison El Chapo is going to. It is sometimes referred to as "the Alcatraz of the Rockies." The supermax prison is home to inmates the federal prison system has declared the most dangerous in the country. Violent gang leaders, foreign and domestic terrorists, and inmates with a history of violent crimes towards fellow inmates and prison guards can all be found at ADX Florence. 

Who is the most famous prisoner at the ADX Florence Facility? Oklahoma City bomber Timothy McVeigh used to top the list. The Gulf War veteran detonated a truck bomb in front of the Alfred P. Murrah Federal Building in 1995 killing 168 people and injuring over 600. Now, El Chapo is the most dangerous man at the prison. Cartel Lord El Chapo, born Joaquín Guzmán, once claimed he killed 2,000-3,000 people. At ADX Florence, McVeigh was housed on “Bombers Row” along with Unabomber Ted Kaczynski, New York Latin Kings founder Luis Felipe, and the 1993 World Trade Center terrorist Ramzi Yousef.

Here are the most dangerous criminals locked up in the "unescapable" Colorado supermax prison.

  • Photo: FBI - New Jersey / Wikimedia Commons / Public Domain
    Anthony Salvatore Casso (born May 21, 1942) is an American mobster and former underboss of the Lucchese crime family. During his career in organized crime, Casso was regarded as a "homicidal maniac" in the mafia as he admitted to the government responsibility for 36 murders but most likely committed many more. Former Lucchese captain and government witness Anthony Accetturo once said of Casso, "all he wanted to do is kill, kill, get what you can, even if you didn't earn it." In interviews and on the witness stand, Casso has confessed involvement in the murders of Frank DeCicco, Roy DeMeo, and Vladimir Reznikov. Casso has also admitted to several attempts to murder Gambino family boss John...  more
    • Age: 80
    • Birthplace: New York City, New York
    • Gender: Male
  • Barry Mills

    Barry Byron Mills (July 7, 1948 – July 8, 2018) was an American convicted criminal and leader of the Aryan Brotherhood (AB) prison gang. Nicknamed "The Baron", Mills was incarcerated in the California state prison system at a young age, where he rose within the AB organization during the 1970s and 80s.Mills, from Windsor, California, was first incarcerated in 1967, and jailed for a year in a county lockup. He entered the California state prison system after an armed robbery in 1969, and was in jail from then on. He became involved with the AB in San Quentin Prison, where the group originated in 1964. He was convicted of nearly decapitating another inmate, John Marsloff, over a gambling debt...  more
    • Age: 72
    • Gender: Male
  • Photo: Federal Bureau of Investigation / Wikimedia Commons / Public Domain
    Theodore John Kaczynski (; born May 22, 1942), also known as the Unabomber (), is an American domestic terrorist, former mathematics professor, and anarchist author. He was a mathematics prodigy, but he abandoned an academic career in 1969 to pursue a primitive lifestyle. Between 1978 and 1995, he killed three people and injured 23 others in an attempt to start a revolution by conducting a nationwide bombing campaign targeting people involved with modern technology. In conjunction, he issued a social critique opposing industrialization while advocating a nature-centered form of anarchism.In 1971, Kaczynski moved to a remote cabin without electricity or running water near Lincoln, Montana...  more
    • Age: 78
    • Birthplace: Evergreen Park, Illinois, United States of America
    • Gender: Male

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  • Photo: Federal Bureau of Investigation / Wikimedia Commons / Public Domain
    Nicodemo Domenic "Little Nicky" Scarfo (March 8, 1929 – January 13, 2017) was a member of the American Mafia who eventually became the boss of the Philadelphia crime family after the death of Angelo Bruno and Phil Testa. During his criminal career, Scarfo was described by some as psychotic, cruel and vicious. From many accounts of his former criminal associates who testified against him, he would want to murder someone if he was shown the slightest bit of disrespect or even if he was stared at.Scarfo orchestrated a particularly ruthless regime and ordered over a dozen murders during his time as boss. He was often described by informants as cold-hearted and narcissistic. He enjoyed the...  more
    • Age: 91
    • Birthplace: New York City, New York
    • Gender: Male