Abandoned underground workings

(1) No work shall be carried out within 30 meters (100 feet) of abandoned or old workings; or any accumulation of water or unconsolidated material; or any other substance that may flow when wet, unless the proposed work procedure has been submitted to and has been authorized by the Inspector in writing. (2) Where possible, no connection between mine workings shall be made until a thorough examination of the workings toward which the active heading is advancing has been made and has shown that the work can proceed in a safe manner. Breakthrough to