S.C. Code Ann. § 42-3-140: Power of commission to subpoena witnesses, administer oaths and examine books and records.

The commission or any member thereof, or any person deputized by it, may, for the purpose of this title, subpoena witnesses, administer or cause to be administered oaths and examine or cause to be examined such parts of the books and records of the parties to proceedings as relate to questions in dispute.