Located immediately to the northeast of Tullibody in Clackmannanshire, HM Prison Glenochil holds a maximum of 670 short-term, long-term and life-sentence adult male prisoners in low, medium and high security categories. Inmates are only be sent here from other prisons and cannot enter the prison system via Glenochil. Opened in 1966 as a short-term detention centre on part of the site of the short-lived Glenochil Colliery, it became a Young Offenders Institution (YOI) in 1975 and four new blocks were built in the 1980s to house adult male long-term offenders. The total capacity was 496 inmates. Between 2000 and 2010 the original prison was demolished and a new facility constructed, including an education building, visitor facility and health centre. The prison continued to operate while these changes took place. There are now a total of 534 cells, a quarter of which are designed for double occupancy, divided between two blocks, known as Harviestoun and Abercrombie Halls. In addition, Devon Hall is a segregation unit. Glenochil YOI closed in 2010, with its occupants transferred to Polmont.