International Conference of Mine-Experiment Stations: Pittsburgh, Pennsylvania, U.S.A., September 14-21, 1912. (open access)

International Conference of Mine-Experiment Stations: Pittsburgh, Pennsylvania, U.S.A., September 14-21, 1912.

Report discussing an international conference on mine-experiment stations assembling in Pittsburgh, Pennsylvania. The United States sent invitations to countries that had mine-experiment stations, Great Britain and Canada were the only countries, that did not accept invitation.
Date: 1914
Creator: Rice, George S.
System: The UNT Digital Library
World Survey of Tantalum Ore (open access)

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.
Date: March 1945
Creator: Baker, James S.
System: The UNT Digital Library