; and (2) in subsection (c) by inserting and mineral material after vegetative . (c) Conforming amendment Section 1 of the Act of July 31, 1947, entitled An Act to provide for the disposal of materials on the public lands of the United States ( 30 U.S.C. 601 et seq.) is amended by striking common varieties of in the first sentence. (d) Short titles (1) Surface resources The Act of July 23, 1955, is amended by inserting after section 7 the following new section: 8. This Act may be cited as the Surface Resources Act of 1955 . . (2) Mineral materials The Act of July 31, 1947, entitled An Act to provide for the disposal of materials on the public lands of the United States ( 30 U.S.C. 601 et seq.) is amended by inserting after section 4 the following new section: 5. This Act may be cited as the Materials Act of 1947 . . (e) Repeals (1) Subject to valid existing rights, the Act of August 4, 1892 (chapter 375; 27 Stat. 348; 30 U.S.C. 161 ), commonly known as the Building Stone Act, is hereby repealed. (2) Subject to valid existing rights, the Act of January 31, 1901 (chapter 186; 31 Stat. 745; 30 U.S.C. 162 ), commonly known as the Saline Placer Act, is hereby repealed. 413. Effective date This Act shall take effect on the date of enactment of this Act, except as otherwise provided in this Act.