Miss. Code § 75-57-13
It is expressly provided that, subsequent to the issuance of a permit by the Mississippi State Oil and Gas Board permitting the creation of such spaces, compressed air, liquefied compressed gases, refined hydrocarbons, oil or gas, or both, and those liquefied compressed gases known as butane or propane or mixtures thereof, may be stored in artificially formed underground storage spaces where such cavities are dissolved in salt beds and that the provisions of Section 53-3-155 shall be applicable for the issuance of a permit for the creation and use of such spaces. The Oil and Gas Board shall exercise jurisdiction over safety precautions regarding the storage and transmission of the compressed air, liquefied compressed gases, refined hydrocarbons, oil or gas, or both, only while it is underground and in the associated wellhead facilities as prescribed and set out in Section 53-1-17(3)(p). The State Liquefied Compressed Gas Board shall be responsible for promulgating and enforcing safety standards beyond the associated wellhead facilities, during transmission above ground and while the compressed air, liquefied compressed gases, refined hydrocarbons, oil and gas is stored above ground.
Miss. Code § 75-57-13