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Economic filters for evaluating porphyry copper deposit resource assessments using grade-tonnage deposit models, with examples from the U.S. Geological Survey global mineral resource assessment

Online link http://pubs.usgs.gov/sir/2010/5090/h/
Description This paper reports on a methodology that is used with estimates of undiscovered copper resources to evaluate the likely contribution that the predicted resources will make to mineral supplies in the foreseeable future.
Originators Robinson, Gilpin R. Jr. and Menzie, W. David
Publication U.S. Geological Survey Scientific Investigations Report 2010-5090-H

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