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Low-Temperature Carbonization Assays of North American Coals
Report issued by the Bureau of Mines over studies conducted on low-temperature carbonization of coal. Methods and results of the studies are presented and discussed. This report includes tables, illustrations, and photographs.
Date:
1957
Creator:
Selvig, W. A. & Ode, W. H.
System:
The UNT Digital Library
The Feldspars of the New England and North Appalachian States
From Introduction: "The investigations presented in this bulletin have been undertaken by the bureau with a view to a better understanding of the conditions which confront the producer of commercial feldspar and also with the object of determining wherein the various deposits of feldspar differ."
Date:
1916
Creator:
Watts, A. S.
System:
The UNT Digital Library