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Trace Elements Reconnaissance in Indiana, Illinois, Missouri, Arkansas, and Kentucky
Report discussing examination of various trace elements by the U.S. Geological Survey in Indiana, Illinois, Missouri, Arkansas, and Kentucky during October and November, 1946.
Date:
May 1949
Creator:
Stratton, Edward V. & Nelson, John M.
System:
The UNT Digital Library
Preparation Characteristics of Illinois Coals
Report issued by the Bureau of Mines discussing the mechanical coal-preparation characteristics. As stated in the introduction, "this second publication reports the washability and screen analyses of the important Illinois coal beds, showing the quality of product that would result when the raw coal is subjected to preparatory treatment" (p. 1). This report includes tables, maps, and illustrations.
Date:
1949
Creator:
Crentz, William L. & Fraser, Thomas
System:
The UNT Digital Library