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What method of mining will be used underground?

The mining method contemplated in the PEA is called both “cut and fill” or “drift and fill”, which means that part of the deposit will be mined out (cut) and paste backfill non-mineralized rock will be placed in that opening (fill). This greatly reduces the amount of tailings that are stored at surface level as approximately half of the tailings will be placed back underground as paste backfill. Sandfire is evaluating various scenarios to minimize the amount of tailings to be stored at surface.