104 STAT. 4582 PUBLIC LAW 101-634—NOV. 28, 1990 lands which it acquires pursuant to this Act and will manage its lands in a manner consistent with such designation. SEC. 4. RESTRICTIONS. (a) RESTRICTIONS ON ADDITIONAL TRANSFER.—The lands and interests transferred to the City or the United States under this Act shall not be conveyed or otherwise transferred to any person or entity other than the United States. (b) RESTRICTIONS ON EXPLORATION OR DEVELOPMENT.—The lands and interests transferred to the City or the United States under this Act shall not be subject to any form of mineral, energy, or geothermal exploration or development, and shall be used only for purposes consistent with and conforming to the reservations and purposes of the Act of September 19, 1914, and this Act, except for valid existing rights protected under section 3(e). SEC. 5. AUTHORIZATION OF APPROPRIATIONS. There are authorized to be appropriated such sums as may be necessary to carry out the purposes of this Act. Approved November 28, 1990. LEGISLATIVE HISTORY—S. 319: HOUSE REPORTS: No. 101-547, Pt. 1 (Comm. on Interior and Insular Affairs) and Pt. 2 (Comm. on Agriculture). SENATE REPORTS: No. 101-231 (Comm. on Energy and Natural Resources). CONGRESSIONAL RECORD, Vol. 136 (1990): Jan. 24, considered and pa^ed Senate. Oct. 10, considered and passed House, amended. Oct. 26, Senate concurred in House amendment.