Miss. Code Ann. § 27-35-337

It shall be the duty of public service corporations subject to Sections 27-35-331 through 27-35-343 to report to the county tax assessor of the counties in which any property subject to Sections 27-35-331 through 27-35-343 is located the same information and data, at the same time as such data and information has heretofore been reported to the State Tax Commission. Reports to the State Tax Commission may, after the effective date of Sections 27-35-331 through 27-35-343, eliminate the data and information which will be reported to county tax assessors pursuant to this section.