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The estimated amount of a natural resource, especially an energy resource, that has been measured with reasonable certainty and is obtainable with existing equipment and under current operating conditions. Proved reserves are important to energy companies that wish to extract as much of a resource as possible at the least amount of risk. See also: Developmental oil and gas partnership.
The quantity of minerals expected to be recoverable under current economic and operating conditions. The amount of proved reserves is important in valuing the stock of a company with significant holdings in natural resources.