Boundary pillars underground

(1) A pillar of not less than 30 meters (100 feet) shall be maintained on either side of a party boundary between adjoining underground mines although the owners of the adjoining properties may, by written agreement filed with the Inspector, waive this agreement. Shaft pillars. (2) No stoping shall be done within 60 meter (200 feet) a shaft that is used to transport persons unless the plan has been authorized by the Inspector. from