Sec. 4. As used in this chapter, "test hole" means an exploratory hole, except for coal exploration, drilled for the purpose of obtaining information and data on the character, composition, sequence, thickness, age, and correlation of underground strata and formations for at least one (1) of the following and no other purposes:
(1) The feasibility of an area for fluid disposal.
(2) The existence, extent, and characteristics of an underground mineral deposit or deposits.
(3) The suitability of underground formations for use in or as a foundation for engineering projects or works.
(4) Expanding the store of scientific knowledge of the geology of an area.