S.C. Code Ann. § 12-37-2010

To enable the county auditors properly to apportion the assessments between the several townships, they may require the agent of any association or company subject to the provisions of this article to report to them, respectively, under oath, the length of the lines in each township, and the auditor shall thereupon add to the value so apportioned the assessed valuation of the real estate, structures, machinery, fixtures and appliances situated in any township and extend the taxes thereon upon the duplicates, as in other cases.