Mo. Rev. Stat. § 492.360

Depositions or examinations taken by virtue of any of the provisions of sections 492.080 to 492.400 and all exhibits produced to the person or officer taking such examinations or depositions, and proved or referred to by any witness, together with the commission and interrogatories, if any, shall be enclosed, sealed up, and directed to the clerk of the court in which or the associate circuit judge before whom the action is pending.