This district is intended to provide an area primarily for either agricultural endeavors involving five (5) or more acres under one ownership or the extraction of the various products such as oil, minerals, rock, and gravel from the earth. The rural nature and low density of population in this district requires that uses essential to agriculture, mining, quarrying, and extraction have a reasonable setback of buildings from streets and highways. It is the purpose of this district to encourage and protect such uses from urbanization until such use is warranted and the appropriate change in district classification is made. (1986 Code)