From Introduction: "Studies also were made to determine the efficiency of the process in grinding a variety of individual minerals, pigments, metals, and ceramics. As a result of this work, the process was adapted by industry to produce paper-filler-grade kaolin and ultrafine titania pigment on a commercial scale. This report summarizes the results of the Bureau's research studies and includes a brief description of the commercial applications."

Report issued by the U.S. Bureau of Mines discussing critical and strategic Alaskan minerals. As stated in the introduction, "this is the first report on these Bureau of Mines investigations. It summarizes available information about deposits and past production of cobalt, the platinum-group metals, and chromite, which was obtained during investigations of these metals through May 1981" (p. 2). This report includes tables, illustrations, photographs, and a map.

Report issued by the Bureau of Mines over the geology of roof-rock stability in coal mines. The distribution, frequency, and magnitude of roof falls in U.S. coal mines are discussed. This report includes maps, illustrations, and photographs.

From foreword: This report is on the Arnold Mesa RARE II Further Planning Area, Yavapai County, Arizona.

Report issued by the U.S. Bureau of Mines discussing a workshop held on the techniques for measurement of thermodynamic properties. As stated in the abstract, "this information circular comprises the proceedings of the workshop and includes the texts of papers presented and discussion by attendees" (p. 1). This report includes tables, illustrations, and photographs.