A. Acknowledge the existence of specific sites of mineral extraction activities which were in operation prior to the adoption of this title;

B. Protect said site from conflicting uses;

C. Protect areas of different use characteristics, but adjacent to, or within a certain proximity of said site from adverse effects of mineral extracting activities;

D. Provide for the orderly planning for future use of mineral extraction sites at such time as the mineral resources are exhausted or their extraction ceases to be economically justified. (Ord. 583 §2.25(A), 1980).