Webthe “supermax” u. s. Penitentiary administrative maximum, also known as adx florence, in colorado, holds the most dangerous federal prisoners: Webwashington — today, the u. s. Department of the treasury’s office of foreign assets control (ofac) is designating 12 individuals in connection with the. Eric rudolph, the atlanta olympics bomber. Webhousing america's most dangerous criminals, it's earned its reputation as the nation's most secure prison. Within its walls, the roster of famous adx florence. Webdeep in the mountains of colorado, america’s only supermax prison houses the nation’s most violent inmates. The infamous adx florence has earned the. Weba lawsuit filed against the adx over its allegedly improper treatment of mentally ill inmates has shed new light on the prison's bleak conditions, the new york.