Mines, including the removing, screening, crushing, washing or storage of ore, sand, clay, stone, gravel or similar materials; concrete batching plants, asphalt plants and related industries; provided, however, that no permit shall be issued until and unless the location site plan and method of operation, including necessary structures, have been submitted to and approved in writing by the Planning and Zoning Commission and Board of Aldermen, which permit shall be for a limited period of time not to exceed ten (10) years, subject to regulations and restrictions prescribed by the Board of Aldermen.
(1) Open face quarries, sand or gravel pits for the purpose of removing, screening, crushing, washing or storage of clay, stone, gravel or similar materials. Provision shall be made for the preservation or restoration of the ground surface and cover and such provision shall be shown on the plans submitted to the Board. Permit shall not exceed five (5) years but may be renewed by the Board after public hearing.
(2) Underground mines or quarries or use of such underground mined-out areas for uses not otherwise permitted, provided the following conditions are met:
(a) All surface access to such underground mine or quarry is from within Districts "M-1" and "M-2." All surface access to uses in any existing mined-out area is from within a district in which such use is permitted.
(b) Surface and subsurface rights are in single ownership or under unified control or surface rights are dedicated to public use and subsurface rights alone are retained for mining and subsequent use.
(c) No activities shall be conducted upon the surface of such mine.
(d) Exhaust air vents, air shafts or other surface features necessary and incidental to the underground operation shall be enclosed on four (4) sides to a height of at least eight (8) feet. No noxious gas or fumes shall emanate from any exhaust air vent on the surface of such mine or mined-out area.
(e) A plan of operation indicating the extent of the area proposed to be mined, accompanied by profiles describing any proposed subsequent use of the mined-out areas, shall be included with the site plan submitted to the Board.