Sec. 23-17.1. Mining, posting of notices.
A. Any person who engages in rock quarrying, sand and gravel extraction, other mining or mineral extraction, and related processing and storage activities, and any person who engages in the recontouring of sites previously used for such purposes, shall post and maintain signs notifying the public of the existence of such activities.
B. Signs required to be posted pursuant to this section shall comply with the following standards:
1. Signs shall be posted at intervals no greater than every three hundred feet around the perimeter of sites used for the activities listed in subsection A of this section;
2. The notice on signs shall be printed so that the following words are visible from a distance of one hundred feet: "Mining Activity Occurring Beyond This Point." (Ord. No. G-3291, § 1)