Paste backfill study for deep mining at Kidd Creek

Both high density slurry and paste backfill are considered as alternatives to the current cemented rock fill system used at Falcon-bridge's Kidd Creek Deep Level Mine. High density slurry although possessing very little excess water, must be transported at or above a critical flow velocity To avoid sanding-out of distribution lines. Paste is defined as a railings-based mixture which, when idle, does not bleed water, it has no critical flow velocity. Through investigation into resource availability cost effectiveness and rheology, the backfill method at Kidd Creek's Deep level Mine is examined Recommendations are made surrounding a change to paste backfilling and the investigative steps and results leading to the conclusion are highlighted.