A.   Permitted:

      Mining and all essential structures and operations directly connected with mining or ore such as offices, storehouses, bank houses, transporting, stockpiling, preparing for shipment, and railroad spurs, but not including retail or wholesale businesses, manufacturing, permanent housing or any other residential or commercial use except as in subsection C of this section.

      One dwelling unit for a watchman or caretaker and his family.

   B.   Conditional Use Permit: Smelting, refining, milling or concentrating of ore shall be permitted only by conditional permit of the board of adjustment and appeals.

   C.   Other Uses: Other uses shall be permitted only by permit of the board of adjustment and appeals, and under such conditions as it may apply regarding setback from lot lines, highways and other zones, odors, dust, smoke, cinders, fumes, noise, building heights, vibrations, refuse matter, or water carried waste, available city utilities or any other matter relating to the public health, safety or general welfare. (Ord. 168)