There shall not be included in the measure of the tax levied in this chapter any compressed gas:
When compressed gas is excluded from the tax levied in this chapter by one or more of the exemptions provided, the deduction for the exemption may be taken, without the prior approval of the commission, on the monthly tax report of the distributor of compressed gas importing, selling, delivering or exporting such compressed gas. The commission may require such proof as is reasonably necessary for the administration of this chapter.
Any person who has delivered or sold compressed gas on which the tax has been paid by him to the vendor may, if the compressed gas is subject to exemption under this chapter, assign his claim for exemption to any permitted distributor of compressed gas in this state. Such distributor may deduct the amount of the tax exemption from his next compressed gas tax report, provided the distributor furnishes evidence satisfactory to the commission that the claim for exemption is valid.
In order to claim exemptions provided for under this chapter, the distributor of compressed gas must file claims therefor within three (3) years from the date of sale or delivery; otherwise, claims for such exemptions shall be disallowed.
Miss. Code § 27-59-12