30 U.S.C. § 47 : US Code - Section 47: Impairment of rights or interests in certain mining property

Search 30 U.S.C. § 47 : US Code - Section 47: Impairment of rights or interests in certain mining property

Nothing contained in sections 21, 22 to 24, 26 to 28, 29, 30, 33
to 48, 50 to 52, 71 to 76 of this title and section 661 of title 43
shall be construed to impair in any way, rights or interests in
mining property acquired under laws in force prior to July 9, 1870;
nor to affect the provisions of the act entitled "An act granting
to A. Sutro the right-of-way and other privileges to aid in the
construction of a draining and exploring tunnel to the Comstock
lode, in the State of Nevada", approved July 25, 1866.