80. The roof of a stope that has not been backfilled and is or has been mined under the influence of a body of water shall be inspected a least once each day.
The frequency of such inspections may be reduced to once per week where the stope is monitored by a visual and audible monitoring system.
O.C. 213-93, s. 80; O.C. 1326-95, s. 19.