| attle Mountain Gold planned a comprehensive study of their entire ventilation system with emphasis on one of its primary exhaust raises, the East Return Air Raise (ERAR). Optimization of a second exhaust system, the underground West Return Air Raises (WRAR) and accurate underground pressure surveys to determine the friction factors for the mine were also planned.;The following items have been accomplished; (1) Any optimization/upgrade of the ERAR system is inter linked with the WRAR. (2) The transformation of a Backfill Raise to a dedicated exhaust raise, called WRAR... |
