N.C. Gen. Stat. § 15A-1051

(1) A witness who asserts his privilege against self-incrimination in a hearing or proceeding in court or before a grand jury of North Carolina may be ordered to testify or produce other information as provided in this Article. He may not thereafter be excused from testifying or producing other information on the ground that his testimony or other information required of him may tend to incriminate him. Except as provided in G.S. 15A-623(h), no testimony or other information so compelled, or any information directly or indirectly derived from the testimony or other information, may be used against the witness in a criminal case, except a prosecution for perjury or contempt arising from a failure to comply with an order of the court. In the event of a prosecution of the witness he shall be entitled to a record of his testimony.

(2) An order to testify or produce other information authorized by this Article may be issued prior to the witness's assertion of his privilege against self-incrimination, but the order is not effective until the witness asserts his privilege against self-incrimination and the person presiding over the inquiry communicates the order to him.

(3) As used in this Article, "other information" includes any book, paper, document, record, recordation, tangible object, or other material.