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China
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Technical Report Archive and Image Library
- World Survey of Tantalum Ore
- Report issued by the U.S. Bureau of Mines discussing the occurrences of tantalum in different areas of the world. The tantalum deposits are described in reference to each individual country that it is found in. This report includes maps, tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc67031/