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  Partner: UNT Libraries Government Documents Department
 Country: Canada
 State: Idaho
 Collection: Technical Report Archive and Image Library
Copper Mining in North America

Copper Mining in North America

Date: 1938
Creator: Gardner, E. D.; Johnson, C. H. & Butler, B. S
Description: From introduction: "In this paper are assembled and summarized many subjects relating to the copper industry in North America. Production of mines and districts, history of the industry in North America. Production of mines and districts, history of the industry, geology, of the principal deposits, and mining methods and costs are discussed."
Contributing Partner: UNT Libraries Government Documents Department
United States Earthquakes, 1944

United States Earthquakes, 1944

Date: 1944
Creator: unknown
Description: Report discussing earthquake activity in the United States during 1944. The report is broken down by regions and has sections for specific earthquakes.
Contributing Partner: UNT Libraries Government Documents Department