Pub. L. 100-581, tit. VI, sec. 603

Sec. 603. Nothing in this title shall deprive any person (other than the United States) of any lease, right-of-way, mining claim, grazing permit, water right, or other right or interest which such person may have in the surface or mineral estate of any land referred to in section 1 on the day before the date of enactment of this Act.