The several members of the board of county commissioners of Mineral County, Nevada are authorized to issue in writing permits to persons to excavate or otherwise disturb the surface of roads, streets and highways, in their respective commissioner districts, upon application therefor, and upon proper showing of necessity therefor, and upon assurance that such work will not result in any permanent damage to such roads, streets or highways. (MC-UT Ord. 20 § 2, 1930)