facility. In the 1920s, the Penitentiary created a flax plant which employed more than half of its inmates. Inmates worked on construction and in the fields, and were paid $0.50–$1.00 per day. The plant was touted nationally as a way to make the prison financially self-sustaining, and to rehabilitate prisoners by giving them something to do and preparing them to work. In 1925, OSP had the largest flax scutching mill in the world, with 175 workers producing 100–150 tons of flax per day. With assistance from the Federal Bureau of Education, OSP ran a unique and successful adult education program during the same era. With Prohibition in effect, 80 of the prison's 575 inmates at this time were moonshiners. Nine prisoners were shot in a 1926 riot beginning in the prison cafeteria. Seven hundred inmates were involved in a riot on August 1, 1936, in response to a court ruling that made it more difficult for prisoners to be released after serving their minimum sentence. The riot was put down by armed guards; one prisoner, Thomas Baughn, was killed and two were wounded. After being deprived of their weapons (and of food, in punishment), prisoners began to break windows and throw projectiles from their cells. Inmates at OSP attempted a mass escape in December 1951, after receiving weapons from a sympathetic guard. The plan was foiled by an informant, John Edward Ralph, who was quickly transferred to Folsom Prison for his own protection. Unrest continued through 1952 with civil disobedience and more escape attempts. Over 1300 prisoners conducted an eight-day hunger strike in August to protest alleged brutality of a guard named Morris Race. In October 1952, an escape attempt involving armed conflict with guards was suppressed with gunfire. On January 1, 1953, prison officials announced the discovery of an escape tunnel being dug by prisoner Robert Green. The tunnel was 12 feet underground and 50 feet long, reaching within 15 feet of the world outside OSP walls. A major insurrection erupted in July 1953 when prisoners stopped working, on strike for better food and medical care. They barricaded themselves in the cafeteria. Under instructions from Warden Clarence T. Gladden, guards used tear gas to prevent the prisoners from reaching food supplies. The angry prisoners gained control of most of the prison and started fires in the flax plant, laundry room, tailor room, and machine shop. Ultimately the prisoners were