Subject to the conditions herein provided, mining locations may be made under the general mining laws of the United States on lands of the United States situated within the exterior boundaries of that portion of the Harney National Forest designated as the Norbeck Wildlife Preserve, South Dakota, created pursuant to the provisions of sections 675 to 678 of this title. A locator shall have the right to occupy and use so much of the surface of the land covered by the location as may be reasonably necessary to carry on prospecting and mining, including the taking of mineral deposits and timber required by or in the mining operations, and no permit shall be required or charge made for such use or occupancy: Provided, however, That the mining operations herein authorized shall be subject to such rules and regulations as the Secretary of Agriculture may deem necessary in furtherance of the purposes for which the said preserve was established: Provided further, That the cutting and removal of timber, except where clearing is necessary in connection with mining operations or to provide space for buildings or structures used in connection with mining operations, shall be conducted in accordance with the marking rules and timber sale practices applicable to the Harney National Forest, and no use of the surface of the claim or the resources therefrom not reasonably required for carrying on mining and prospecting shall be allowed except under the national-forest rules and regulations, nor shall the locator prevent or obstruct other occupancy of the surface or use of surface resources under authority of national-forest regulations, or permits issued thereunder, if such occupancy or use is not in conflict with mineral development: Provided further, That the Secretary of Agriculture in his discretion may prohibit the location of mining claims within six hundred and sixty feet of any Federal, State, or county road, and within such other areas where the location of mining claims would not be in the public interest: And provided further, That no patent shall be issued by the United States on any location filed pursuant to the authority contained in this section.