From preface: This report presents the results of a mineral survey of the Big Horn Mountains Wilderness Study Area (AZ-020-099), Maricopa County, Arizona.

From Preface: "This Bulletin provides a permanent record of the operation of an experimental alumina plant by the Bureau of Mines at Laramine, Wyo. The broad purpose of this experimental program was to appraise the technologic and economic feasibility of producing aluminum from nonbauxitic ores."

Report issued by the Bureau of Mines over studies conducted on the removal of magnetic materials from iron ores. As stated in the introduction, "this report discusses briefly operations and trends in magnetic separation, explains magnetic separation, describes and classifies the machines used, and outlines their development" (p. 1). This report includes tables, and illustrations.

The second volume of a report documenting the suitability of Illinois for plant locations to produce synthetic liquid fuels, based on raw materials.

Report issued by the Bureau of Mines over mineral characteristics, uses, and problems. Descriptions of common minerals and their uses are presented and discussed. This report includes tables, maps, and illustrations. Index and finding guide starts on page 1113.