S.C. Code Ann. § 41-15-630 – Witnesses; discovery

(a) The board or any member thereof may for the purposes of this article subpoena witnesses, administer or cause to be administered oaths, and examine or cause to be examined the books and records of the parties to proceedings before it as relate to questions in dispute.
(b) Any party desiring discovery by deposition, interrogatory, or entry upon designated land or other property in the possession or control of another party shall apply to the hearing member of the board for an order directing such discovery. In the event that the hearing member grants an application for the conduct of the discovery proceedings, the order must set forth appropriate time limits and such other limits as required by law.