OPINION — AG — ** GRAND JURY — DISTRICT ATTORNEY — PRESENT DURING EXAMINATION ** MEMORANDUM DEALING WITH DISTRICT ATTORNEY, COUNTY ATTORNEY MUST APPEAR BEFORE GRAND JURY AND WHO IS PERMITTED TO BE PRESENT DURING EXAMINATION OF WITNESSES. CITE: 22 O.S. 340 [22-340], 22 O.S. 894 [22-894] (INVESTIGATION MEMBERS, REPRESENT) (FRED HANSEN)