S.C. Code Ann. § 16-3-690: Custody of deposition.

Such depositions, when taken, shall be signed by the witness in the presence of the clerk or other officer taking the same, placed in a sealed envelope, the title of the case endorsed thereon, and be retained by the clerk of court until the same is opened in court; and if taken by another officer he shall deliver the same to the clerk, to be retained by him as herein provided.