controlled from a two-story security glassed-in "bubble" that allows officers to open and close doors throughout the unit on both cell blocks and in the programming space on the level above the cell blocks. While the electronic controls in the bubble were state of the art in 1982, they were due to be replaced in 2010 with modern computer controlled updates. Another system that was to be updated in 2010 is the vibration sensors on the exterior fence. The original fence used high tech vibration sensing technology from Israel that is no longer manufactured or supported. Because each complex is sectioned off from the rest of the prison by a bubble controlled sally port, only small numbers of offenders can enter the hallway connecting the complexes at any one time. The hallway itself has large steel "sliders" that can quickly close off each section of hallway should a complex need to be isolated. The "yard" is fully within the walls of the prison, and armed officers patrol the top of the walls whenever prisoners are out. Outside of the prison building is a field surrounded by a double set of fences topped with razor wire. No prisoner has ever escaped. Notable inmates Current Michael John Anderson (born 1988), convicted in the murder of Katherine Ann Olson Byron David Smith (born 1948), convicted of killing Haile Kifer and Nicholas Brady Former Donald Blom (1949-2023), convicted in the murder of Katie Poirier Christopher John Boyce (born 1953), former defense industry worker convicted of espionage; served some of his sentence at MC-OPH; released in 2002 Derek Chauvin (born 1976), former Minneapolis police officer convicted in the murder of George Floyd John Jason McLaughlin (born 1988), perpetrator of the Rocori High School shooting Richard Lee McNair (born 1958), murderer known for escaping three prisons Mohamed Noor (born 1985), former Minneapolis police officer convicted of killing Justine Damond; served some of his sentence at MCF-OPH; released in 2022 John Paul Scott (1927-1987), bank robber known for escaping Alcatraz Federal Penitentiary Paul Michael Stephani (1944-1998), serial killer; died of skin cancer References External links Minnesota Correctional Facility – Oak Park Heights Oak Park Heights Buildings and structures in Washington County, Minnesota 1982 establishments in Minnesota