S.C. Code Ann. § 19-1-100: No statement shall be used for impeachment in civil proceeding unless copy furnished when signed.

No statement taken from and signed by a witness or litigant after July 1, 1966 shall be used in any civil judicial proceeding for the purpose of contradicting, impeaching or attacking the credibility of such a witness or litigant, unless such party shall have been furnished a copy of said statement at the time of its signing.