Mo. Code Regs. Ann. tit. 1, § 15-5.390
PURPOSE: Thisruledescribes whomay intervene in an action and how to interuene.
(D) Be accompanied by a pleading.
Auth: section 621.198, RSMo (1986).’ Original rule filed Aug. 5, 1991, effective Feb. 6,1992. *Original authority 1965, amended 1978.