“ Besides, as Congress has plenary power over the disposal of the mineral-bearing public lands, it rests with it to say to what extent, if at all, the right to pursue veins on their downward course into the earth shall pass to and be reserved for those to whom it grants possessory or other titles in such lands. ”

“ In Mining Co. v. Tarbet, 98 U.S. 463, 467 (25 L. Ed. 253) , this court in pointing out the intent of the statute said that 'the end lines are to cross the lode and extend perpendicularly downwards, and to be continued in their own direction either way horizontally.' And in Del Monte Mining Co. v. Last Chance Mining Co., 171 U.S. 55, 88, 18 Sup. Ct. 895, 908 (43 L. Ed. 72) , a case in which the statute was much considered, it was said:
'Every vein whose apex is within the vertical limits of his surface lines passes to him by virtue of his location. ”

“ Giving due effect to the finding, it is manifest that the vein in controversy is not a flat or horizontal vein or one which would be practically horizontal but for a succession of rolls or waves in its el vation. On the contrary, it is shown to be a fissure vein with two dipping limbs whose course downward is substantial, regular and practically free from undulations. ”

“ But otherwise it is without limitation or exception and broadly includes 'all veins, lodes and ledges throughout their entire depth'-one as much as another, and all whether they depart through one side line or the other. ”