Miss. Code Ann. § 27-31-111

If at any time during an authorized period of ad valorem tax exemption for a given plant there is a cessation of manufacturing operations as herein defined for a continuous period of twelve (12) months or more, all unexpired tax exemptions covered by Sections 27-31-101 through 27-31-117 for that particular plant shall become void, and if manufacturing operations are begun at a later date, a new application may be filed subject to the same approval and the same certification for the unexpired balance of the period covered by the original exemption.