With the approval of the Governor, the Commission may appoint and employ, at the expense of the State, engineers, accountants, legal counsel, and such number of clerks, stenographers, experts, and temporary employees as it deems necessary in the performance of its duties and in the investigation of matters within its jurisdiction. (Amended 1959, No. 329 (Adj. Sess.), § 39(b), eff. March 1, 1961; 1971, No. 191 (Adj. Sess.), § 13.)