Current through Register Vol. 30, No. 50, December 13, 2024
Section R11-1-1809 - Ventilation, Main Fans - OperationMain fans should be:
1. Operated continuously except when the mine is shut down for an extended period.2. Provided with pressure-recording gauges.3. Inspected daily each day during which the fan is operated and records kept of such operations and of fan maintenance.Ariz. Admin. Code § R11-1-1809