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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."
Date:
1938
Creator:
Gardner, E. D.; Johnson, C. H. & Butler, B. S.
Object Type:
Report
System:
The UNT Digital Library
Fiscal Notes: June/July 2015
Newsletter issued by the Texas Office of the Comptroller discussing news, events, statistics, and other relevant information related to business and the economy.
Date:
June 2015
Creator:
Texas. Comptroller's Office.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History