Unless otherwise authorized by the Secretary of the Interior or his authorized representative, each lease, sublease, or assignment shall be accompanied at the time of filing by a fee of $10. (Sec. 1, 41 Stat. 415, as amended; 25 U.S.C. 413) [24 FR 7949, Oct. 2, 1959. Redesignated at 47 FR 13327, Mar. 30, 1982]