Talc and Soapstone: Their Mining, Milling, Products and Uses (open access)

Talc and Soapstone: Their Mining, Milling, Products and Uses

Report issued by the Bureau of Mines over talc and soapstone. The different mining methods, as well as their uses are discussed. This report includes tables, illustrations, and photographs.
Date: 1923
Creator: Ladoo, Raymond B.
System: The UNT Digital Library
The Feldspars of the New England and North Appalachian States (open access)

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