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  Partner: UNT Libraries Government Documents Department
 Country: Nigeria
 Serial/Series Title: United States Bureau of Mines Reports
 Collection: 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/