Indiana Code Title 8. Utilities and Transportation § 8-22-2-13

Sec. 13. The board of an eligible entity may, upon resolution of the board, sell the minerals or mineral rights or royalties, or grant leases for the removal of a mineral in or under an airport or landing field owned by the entity. They shall be sold or leased in the same manner as land is sold or leased under this chapter, and the proceeds derived from these sources shall be deposited with the treasurer of the entity in the aviation fund of the entity and expended as provided by statute for the proceeds of the sale of aviation lands. However, no sale or lease for more than one (1) year may be made, except to the highest and best bidder, after notice of sale or lease has been given within the boundaries of the entity in accordance with IC 5-3-1, the last publication having been made at least one (1) week before the date of the sale or lease.