The purpose of the Mineral Resource (MR) Overlay Zone is to provide supplemental standards for surface mining and related activities. The MR overlay zone, when shown on the zoning map of the city in combination with a symbol such as M-2 or M-3, permits certain uses not otherwise permitted in the underlying zone and restricts certain uses otherwise permitted in the underlying zone.
(`78 Code, § 17.62.310.) (Ord. 2089 § 1 (part), 1992.)