ALASKA. 
83 
tofore located, shall be governed as to length along the vein or lode by the cus¬ 
toms, regulations, and laws in force at the date of their location. A mining- 
claim located after the tenth day of May, eighteen hundred and seventy-two, 
whether located by one or more persons, may equal, but shall not exceed, one 
thousand five hundred feet in length along the vein or lode; but no location of 
a mining-claim shall be made until the discovery of the vein or lode within the 
limits of the claim located. No claim shall extend more than three hundred feet 
on each side of the middle of the vein at the surface, nor shall any claim be 
limited by any mining regulation to less than twenty-five feet on each side of the 
middle of the vein at the surface, except where adverse rights existing on the 
tenth day of May, eighteen hundred and seventy-two, render such limitation 
necessary. The end-lines of each claim shall be parallel to each other. 
Sec. 2321. Proof of citizenship, under this chapter, may consist, in the case 
of an individual, of his own affidavit thereof; in the case of an association of 
persons unincorporated, of the affidavit of their authorized agent, made on his 
own knowledge, or upon information and belief; and in the case of a corpora¬ 
tion organized under the laws of the United States, or of any State or Terri¬ 
tory thereof, by the filing of a certified copy of their charter or certificate ot 
incorporation. 
Sec. 2322. The locators of all mining locations heretofore made or which 
shall hereafter be made, on any mineral vein, lode, or ledge, situated on the pub¬ 
lic domain, their heirs and assigns, where no adverse claim exists on the tenth 
day of May, eighteen hundred and seventy-two, so long as they comply with 
the laws of the United States, and with State, Territorial, and local regulations 
not in conflict with the laws of the United States governing their possessory title, 
shall have the exclusive right of possession and enjoyment of all the surface 
included within the lines of their locations, and of all veins, lodes, and ledges 
throughout their entire depth, the top or apex of which lies inside of such surface¬ 
lines extended downward vertically, although such veins, lodes, or ledges may 
so far depart from a perpendicular in their course downward as to extend out¬ 
side the vertical side-lines of such surface locations. But their right of posses¬ 
sion to such outside parts of such veins or ledges shall be confined to such 
portions thereof as lie between vertical planes drawn downward as above 
described, through the end-lines of their locations, so continued in their own 
direction that such planes will intersect such exterior parts of such veins or 
ledges And nothing in this section shall authorize the locator or possessor 01 
a vein'or lode which extends in its downward course beyond the vertical lines 
of his claim to enter upon the surface of a claim owned or possessed by another. 
Sec 2.23 Where a tunnel is run for the development of a vein or lode, or 
for the discovery of mines, the owners of such tunnel shall have the right of 
