Ind. Code § 23-14-72-4
(b) If:
(2) the lot is not occupied by a grave;
the incorporated cemetery may sell the lot to satisfy the unpaid assessment after following the procedure set forth in subsection (c).
(c) The association of an incorporated cemetery may sell a lot under this section if:
(1) the association provides:
(B) if the address of the owner is unknown, notice by publication once each week for a period of two (2) weeks in a newspaper of general circulation that is printed and published in the county in which the cemetery is located;
stating that the lot may be sold unless the assessment is paid within thirty (30) days after the date of the writing delivered under clause (A) or the second publication under clause (B); and
As added by P.L.52-1997, SEC.46.