PRISONERS SLASH HEEL TENDONS ATGEORGIA PRISONBUFORD, Ga . V State prison officials today began looking mto a Chriibnu Day heel-slashing outbreak which sent about T.0 of Georgia's incorrigible* mto solitary j confinement, jWarden Hubert L Smith of the state’s new rock quarry pn,*n ■said yesterday the hardened inmates cut their heel tendons with a safety razor blade to escape work. The prisoners were confined to solitary ceils after the prison doctor sewed their wound*The prisoners reportedly were demonstrating against limited via-| iting privileges and a lack of reading material and radios at rock quarry.The warden, however said they did it just to get out of work,