Exclusive right of possession and enjoyment of the vein, lode, or ledge throughout its entire depth, the top or apex of which lies inside the surface lines of the claim extended downward vertically, although such veins, lodes or ledges may so far depart from a perpendicular in their course downward as to extend outside the vertical side lines of such surface locations. But the right of possession 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 the location, so continued in their own direction that such planes will intersect such exterior parts of such veins or ledges. Nothing in this subsection shall authorize the locator or possessor of 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.
Such surveys, however, may not be applied as labor for more than two consecutive years or for a total of more than five years on any one mining claim, and each such survey shall be non-repetitive of any previous survey of the same claim.
Notices of termination shall be mailed to the address of record of the lessee. Such notice shall set forth the default and inform the lessee of the time and place he may appear before the Commissioner to show cause why the lease should be restored to good standing.
Ariz. Admin. Code § R12-5-1805