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estimated reserves of minerals means the estimated quantities of minerals that geological and engineering data demonstrate, with reasonable certainty, to be recoverable under existing economic and operating conditions. (réserves estimées)
estimated reserves of minerals means the estimated quantities of minerals that geological and engineering data demonstrate, with reasonable certainty, to be recoverable under existing economic and operating conditions. (réserves estimées)
estimated reserves of minerals means the estimated quantities of minerals that geological and engineering data demonstrate, with reasonable certainty, to be recoverable under existing economic and operating conditions.