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open access

United States Earthquakes 1940

Description: Report discussing earthquake activity in the United States during 1940. The report is broken down by regions and has sections for specific earthquakes.
Date: 1940
Partner: UNT Libraries Government Documents Department
open access

United States Earthquakes 1941

Description: Report discussing earthquake activity in the United States during 1941. The report is broken down by regions and has sections for specific earthquakes.
Date: 1941
Partner: UNT Libraries Government Documents Department
open access

United States Earthquakes, 1943

Description: Report discussing earthquake activity in the United States during 1943. The report is broken down by regions and has sections for specific earthquakes.
Date: 1943
Partner: UNT Libraries Government Documents Department
open access

United States Earthquakes, 1936

Description: Report discussing earthquake activity in the United States during 1936. The report is broken down by regions and has sections for specific earthquakes.
Date: 1936
Partner: UNT Libraries Government Documents Department
open access

United States Earthquakes, 1931

Description: Report discussing earthquake activity in the United States during 1931. The report is broken down by regions and has sections for specific earthquakes.
Date: 1932
Creator: Neumann, Frank
Partner: UNT Libraries Government Documents Department
open access

Copper Mining in North America

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."
Date: 1938
Creator: Gardner, E. D.; Johnson, C. H. & Butler, B. S.
Partner: UNT Libraries Government Documents Department
open access

United States Earthquakes 1942

Description: Report discussing earthquake activity in the United States during 1942. The report is broken down by regions and has sections for specific earthquakes.
Date: 1942
Partner: UNT Libraries Government Documents Department
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