sec.349Taking action if ventilation system fails

### sec.349 Taking action if ventilation system fails An underground mine must have a standard operating procedure for the action to be taken to ensure the safety of persons if the mine ventilation system fails totally, or partly, for more than 30 consecutive minutes. The procedure must provide for the following— the ERZ controller for the part of the mine affected by the failure to inspect the part to ensure it is safe to— continue work in the part; or if electric power to the part has been cut off, restore the power; stopping or restarting work, and shutting off or restoring electric power, if necessary, in the part of the mine affected by the failure. (sec.349-ssec.1) An underground mine must have a standard operating procedure for the action to be taken to ensure the safety of persons if the mine ventilation system fails totally, or partly, for more than 30 consecutive minutes. (sec.349-ssec.2) The procedure must provide for the following— the ERZ controller for the part of the mine affected by the failure to inspect the part to ensure it is safe to— continue work in the part; or if electric power to the part has been cut off, restore the power; stopping or restarting work, and shutting off or restoring electric power, if necessary, in the part of the mine affected by the failure. - (a) the ERZ controller for the part of the mine affected by the failure to inspect the part to ensure it is safe to— (i) continue work in the part; or (ii) if electric power to the part has been cut off, restore the power; - (i) continue work in the part; or - (ii) if electric power to the part has been cut off, restore the power; - (b) stopping or restarting work, and shutting off or restoring electric power, if necessary, in the part of the mine affected by the failure. - (i) continue work in the part; or - (ii) if electric power to the part has been cut off, restore the power;