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[Letter to Mrs. S. M. Compton]
Letter and envelope written by Carl Compton to his mother, Mary, about his travels in Switzerland.
Date:
January 27, 1930
Creator:
Compton, Carl Benton
Object Type:
Letter
System:
The UNT Digital Library
Coal Mining in Europe: A Study of Practices in Different Coal Formations and Under Various Economic and Regulatory Conditions Compared with Those in the United States
From Introduction: "The major purpose of this bulletin, as indicated in the preface by Dr. John W. Finch, Director of the Bureau of Mines, is to give a critical review of the coal-mining methods used in the principal producing countries of Europe, to describe the reasons underlying the adoption of these methods, and to contrast them with coal-mining methods employed in the United States."
Date:
1939
Creator:
Rice, George S. & Hartmann, Irving
Object Type:
Report
System:
The UNT Digital Library