Technical Report Archive & Image Library (TRAIL) - 2 Matching Results
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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."
- 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.