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Will there be leaching of metals underground?

No, our system of cemented paste backfill underground ensures none of the rock walls stay exposed to oxygen long enough to allow a release of metals. Once the cemented paste backfill is placed underground water movement returns to pre-mining levels. All water from underground will be either used in the mill process or treated within the Reverse Osmosis Water Treatment Plant prior to release back to the environment through the underground infiltration system.