In all leases of state lands for grazing or agricultural purposes there shall be inserted a clause reserving the right to execute leases for mining purposes thereon, or for the extraction of petroleum, natural gas, salt or other deposit therefrom, and the right to sell or dispose of any other natural surface products of such lands other than grazing, agricultural or horticultural products; also a clause reserving the right to grant rights-of- way and easements for any of the purposes mentioned in Section 19-7-57 N.M. Stat. Ann..