Cameron Welsh, 26, attacked four prison officers earlier this year at the Cessnock Correctional Centre, resulting in multiple facial injuries. All four officers were hospitalised, and the union said two would never work again. Welsh was later transferred to Goulburn's Supermax prison and isolated from other inmates.  He was convicted yesterday of four counts of assault on a law enforcement officer and inflicting actual bodily harm. He was given a three-year community corrections order and did