Critical Mineral Resources of the United States—An Introduction

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Description An overview of the mineral resource classifications, terms, and definitions used in PP 1802. Includes a review of the history of the use and meaning of the term “critical” applied to minerals or materials.
Originators Schulz, Klaus J., DeYoung, John H. Jr., Bradley, Dwight C., Seal, Robert R. II
Publication U.S. Geological Survey Professional Paper 1802

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