21. After five years he would be eligible for transfer to a prison farm or work camp. 22. Labor camps have many common aspects with slavery and with prisons ( especially prison farms ). 23. He was released in 2000, having served four years in prison at Karnet Prison Farm . 24. A property was eventually selected in 1937 at Hayes, which became the Hayes Prison Farm . 25. In early February 1968, Murton ordered excavations on the grounds of the Cummins prison farm . 26. The Prison farm was sold in 2006, however the Prison retains a small land holding. 27. Race was a major source of conflict in the early years of the State Prison Farm . 28. Ye spent six years laboring on the prison farm , before being admitted to Beijing University. 29. Bowen complained that the conditions " would have produced a riot in a prison farm ." 30. Prostitutes are routinely sent to prison farms where they are lectured on the error of their ways.