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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
Gypsum Products: Their Preparation and Uses
Technical report issued by the Bureau of Mines over the different uses of gypsum. The sources and uses of gypsum are presented and discussed. This report includes tables, photographs, and illustrations.
Date:
July 1917
Creator:
Stone, Ralph W.
System:
The UNT Digital Library