Oregon Revised Statutes Public Lands § 273.920

All leases and conveyances granting the right to explore or prospect for minerals or oil and gas, and for the drilling, mining and removal of the same on or from lands or mineral rights under the jurisdiction and control of any state agency, board or commission, which were executed and delivered by such agency, board or commission prior to August 9, 1961, are hereby validated and declared to be legal and enforceable.