Miss. Code § 75-57-35
Wherein sections of this chapter do not exceed those requirements of the current published regulations of the National Fire Protection Association applicable to liquefied petroleum gas, the laws and regulations of the State Liquefied Compressed Gas Board shall be followed.
When amendments are made to the liquefied petroleum gas regulations of the National Fire Protection Association, such amendments may be adopted, provided they do not conflict with other sections of this chapter. Should a conflict occur between the National Fire Protection Association regulations or any regulations referred to in this chapter and the liquefied petroleum gas regulations of the State Liquefied Compressed Gas Board, then the State Liquefied Compressed Gas Board's regulation shall govern. The inspection and approval of the inspectors in accordance with this chapter shall be in addition to approvals and listings of Underwriters Laboratories, Inc., American Gas Association or other national testing laboratories. Provided further, that all compressed gas containers covered by this chapter shall be approved by the inspectors provided for herein.
Miss. Code § 75-57-35