Mo. Code Regs. Ann. tit. 10, § 40-3.070
PURPOSE: This rule sets forth the requirements for the protection of underground mining from surface coal mining activities pursuant to sections 444.810, 444.855.2(12) and 444.860, RSMo.
(1) Protection of Underground Mining. No surface coal mining activities shall be conducted closer than five hundred feet (500’) to any point of either an active or abandoned underground mine, except to the extent that—
AUTHORITY: section 444.530, RSMo 1994.* Original rule filed Oct. 12, 1979, effective Feb. 11, 1980.
*Original authority 1971, amended 1983, 1990, 1993.