Resource Description Table
(from Canadian Institute of Mining and Metallurgy)
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Category
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Resource Category Description
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Resource
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Reserve
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Measured
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Proven
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The estimated the quantity and grade of that part of a deposit for which the size, configuration, and grade have been very well established by observation and sampling of outcrops, drill holes, trenches and mine workings.
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Indicated
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Probable
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The estimated quantity and grade of part of a deposit for which the continuity of grade, together with the extent and shape, are so well established that a reliable grade and tonnage estimate can be made.
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Inferred
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Possible
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The estimated quantity and grade of a deposit, or a part thereof, that is determined on the basis of limited sampling, but for which there is sufficient geological information and a reasonable understanding of the continuity and distribution of metal values to outline a deposit of potential economic merit.
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