From Abstract: "The micaceous schist ores yielded concentrates containing 95 to 98 percent mica, with recoveries ranging from 70 to 83 percent. Part 1 of this report summarizes the process development work and demonstrates the feasibility of producing commercial-grade mica concentrates. The report also includes details of commercial beneficiation and grinding of mica. Also included in part 2 of this report are details of commercial mica production, including methods of mining, recovering, and grinding mica, and information on the production, uses, and prices of mica."

From Introduction: "This bulletin presents one phase of the Bureau's program of both fundamental and engineering-type studies that are being carried on with respect to the reactions of coal and other carbonaceous materials."

From Introduction: "The first part of the report describes methods that were used to separate various constituents from the distillable portion of low-temperature tar and techniques for upgrading them into more valuable products."

Report issued by the Bureau of Mines discussing the geology and oil-yield of the Green River in the Washakie Basin, Wyoming. Evaluations of the geology and oil-shale resources of the area are presented. This report includes tables, maps, illustrations, and photographs.