Missouri Revised Statutes Title XXVI. Trade and Commerce § 407.060. Disclosure of information, material or evidence, limitation on--trade secrets require court order, when

1. No information, documentary material, or physical evidence requested pursuant to a civil investigative demand issued under section 407.040 shall, unless otherwise ordered by a court for good cause shown, be produced for or the contents thereof be disclosed to, any person other than the authorized employee of the attorney general without the consent of the person who produced such information, documentary material or physical evidence; provided, that under such reasonable terms and conditions as the attorney general shall prescribe, such information, documentary material or physical evidence shall be made available for inspection and copying by the person who produced such information, documentary material or physical evidence, or any duly authorized representative of such person. The attorney general, or any attorney designated by him, may use the information, documentary material, or physical evidence in the enforcement of this chapter, by presentation before any court or by disclosure to law enforcement agencies of this state, another state or the United States for enforcement of the laws of such other state or the United States concerning methods, acts, uses, practices and solicitations similar to those prohibited by this chapter.

2. Any material which contains trade secrets shall not be presented before any court except with the approval of the court in which the action is pending after adequate notice to the person furnishing such material or, in the case of disclosure to agencies of other states, the approval of the circuit court having jurisdiction under section 407.070.