UNT Libraries Government Documents Department - 2 Matching Results
Search Results
- Copper Mining in North America
- 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."
- United States Earthquakes, 1944
- Report discussing earthquake activity in the United States during 1944. The report is broken down by regions and has sections for specific earthquakes.