Section 2
SEC. 2. For a grave violation of the rules and discipline, or for persistent lack of fidelity and care in the performance of work, a prisoner shall not only forfeit all the time gained for the month in which the delinquency occurred, hut, according to the aggravated nature and frequency of his offenses, a portion or all of his time previously gained may be deducted; but if it shall appear from the conduct record of the prisoner, or from the circumstances under which the violation of the rules and discipline was committed, that there were special mitigating circumstances, the standing of the prisoner may be restored to him, in whole or in part.