Indiana Code Title 14. Natural and Cultural Resources § 14-37-8-2

Sec. 2. (a) Plugging methods must be approved by the commission and must permanently confine all oil, natural gas, and water in their original strata.  Mud-laden fluid, cement, mechanical plugs, or other methods or materials approved by the director must be used singly or in combination.

(b) Subject to subsection (c), the commission shall adopt rules under IC 4-22-2 to prescribe plugging methods for wells that impact commercially minable coal resources.

(c) The plugging methods under subsection (b) do not apply to a well if the consent of the coal owner or coal lessee is granted under IC 14-37-4-8.5(d)(2).