Report issued by the Bureau of Mines over studies conducted on the pilot plant in Laramie County, Wyoming. As stated in the introduction, "the purpose of this report is to record information derived from recent experimental work that had as its objective the development and demonstration of one method of producing sponge iron" (p. 2). This report includes tables, illustrations, and photographs.

Report issued by the Bureau of Mines over an annual study of synthetic liquid fuel production. Results of the annual study are discussed. This report includes maps, tables, illustrations, and photographs.

Abstract: "Precambrian metavolcanic rocks north and south of the village of Granite, Wyoming, belong to a sequence of isolated metavolcanic and metasedimentary masses in the Sherman Granite of the southern Laramie Mountains. Similar rocks lie to the west, in the Precambrian uplifts of the southern Medicine Bow Mountains and Sierra Madre. A major fault system, the Cheyenne belt, splits these two ranges into northern and southern domains, and may constitute a suture along which Early Proterozoic islands arcs collided with an Early Proterozoic passive margin. Projection of the Cheyenne belt into the Laramie Mountains suggests that the study area, which is 65 kilometers south of the proposed suture, comprises a distinct volcanic arc with a unique chemistry or age. However, chemistry of the volcanic rocks of the study area as determined as so far does not differ significantly from those of the Medicine Bow Mountains and Sierra Madre."

Abstract: This report is a supplement to the report, "Effect of pumpage on ground-water levels as modeled in Laramie County, Wyoming," published as U.S. Geological Survey Water-Resources Investigations Open-File Report 80-1104 which describes ground-water conditions in post-Cretaceous rocks in Laramie County. The computer program and the data used to model ground-water conditions in post-Cretaceous rocks in Laramie County are listed in this report.

From Introduction: "This so-called thermal-solution process and a modification of it, wherein the conversion is carried out under a high partial pressure of hydrogen, have been studied at the Petroleum and Oil-Shale Experiment Station, Laramie, Wyo., to determine their applicability to Green River oil shale. The results of this work are presented in this report."

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."

Technical report issued by the Bureau of Mines over the different uses of gypsum. The sources and uses of gypsum are presented and discussed. This report includes tables, photographs, and illustrations.