Indiana Code Title 32. Property § 32-23-10-5

(1) was, at the time of the expiration of the period specified in section 4 of this chapter, the owner of ten (10) or more mineral interests in the county in which the mineral interest is located;

(2) made a diligent effort to preserve all the mineral interests that were not being used and, not more than ten (10) years before the expiration of the period specified in section 4 of this chapter, preserved other mineral interests in the county by filing statements of claim as required under this chapter;

(3) failed to preserve the mineral interest through inadvertence;  and

(4) filed the statement of claim required under this chapter: