Section 78
SEC. 78. Every lease granted under this Act shall be construed as granting to the lessee, his successors or assigns, the right to extract all mineral deposits of the group for which the lease or leases had been granted within the boundary lines of the claim or claims covered by the lease, continued vertically downward; to remove and utilize the same for his own benefit, and to use the lands covered by the lease for the purpose or purposes specified therein: Provided, That in the case of leases covering placer locations the lessee shall not be entitled to extract minerals from any lode or vein deposit found within the boundary of his, its, or their placer claims but the lessee shall have the preferential right to locate and lease such lode deposits. The same privilege shall be granted to lessee for minerals or mineral products belonging to different group or groups found therein upon the condition that the lessee shall first comply with the requirements of the law. Any such location, occupation, use, or lease permitted under this Act shall reserve to the Government the right to grant or use such easements in, over, under, through, or upon lands so entered, located, occupied, leased or used, as may be necessary to the working of the same, or of other mineral lands: Provided, That the Secretary of Agriculture and Commerce, in granting any lease under this Act may reserve to the Government the right to lease, sell, or otherwise dispose of the surface of the lands embraced within such lease, under existing law or laws, insofar as said surface is not necessary for use by the lessee in extracting and removing the mineral deposits from the land covered by such lease, or in beneficiation of the ores extracted therefrom, or from any other mining claim. The Secretary of Agriculture and Commerce, during the life of the lease, is authorized to issue permits for easements herein provided to be reserved, and to permit the use of the lands covered by the lease, or of such other public lands, as may be necessary for the construction and maintenance of mills, mining camps, or other works incident to the mining and milling operations on the lands covered by any lease granted under this Act, or on any other mineral lands.