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Silver Bay's taconite ponds, 2010. United States of America v. Reserve Mining Company, 408 F. Supp. 1212 (D. Minn. 1976), was a United States District Court for the District of Minnesota case that determined the Reserve Mining Company was responsible for amphibole asbestos fibers found in the public drinking water of Duluth, Minnesota and other North Shore (Minnesota) communities.
A Probable Mineral Reserve has a lower level of confidence than a Proved Mineral Reserve but is of sufficient quality to serve as the basis for decision on the development of deposit. A Proved Mineral Reserve is the economically mineable part of a Measured Mineral Resource. It includes diluting materials and allowances for losses which occur ...
A Mineral Reserve is the economically mineable part of a Measured or Indicated Mineral Resource demonstrated by at least a Preliminary Feasibility Study. This Study must include adequate information on mining, processing, metallurgical, economic and other relevant factors that demonstrate, at the time of reporting, that economic extraction can ...
The terminology used may vary somewhat, [6] [7] but resources in a McKelvey diagram fall into three main areas: [8] Reserves, which are already discovered and commercially-viable mineral deposits, [8] [1] Contingent [8] or conditional [1] resources, whose existence is known but which are not commercially viable at present,
Proscribed disclosure within the National Instrument precludes a company from reporting; Quantity, grade, or metal or mineral content of a deposit that has not been categorized as an inferred mineral resource, an indicated mineral resource, a measured mineral resource, a probable mineral reserve or a proven mineral reserve
Resource estimates are undiscovered volumes, or volumes that have not yet been drilled and flowed to surface. A non-reserve resource, by definition, does not have to be technically or commercially recoverable and can be represented by a single, or an aggregate of multiple potential accumulations, e.g. an estimated geological basin resource. [14]
Proven reserves (also called measured reserves, 1P, and reserves) is a measure of fossil fuel energy reserves, such as oil and gas reserves and coal reserves. It is defined as the "quantity of energy sources estimated with reasonable certainty, from the analysis of geologic and engineering data, to be recoverable from well established or known ...
The reserve portion of the ratio is the amount of a resource known to exist in an area and to be economically recoverable (proven reserves). The production portion (denominator) of the ratio is the amount of resource produced in one year at the current rate. [1] RPR = (amount of known resource) / (amount used per year)