Report issued by the Bureau of Mines discussing studies conducted on the wax byproducts of crude petroleum. As stated in the scope of report, "this report discusses the principal methods given in the literature for the quantitative determination of wax in petroleum and its fractions by the use of selective solvents" (p. 3). This report includes tables, and illustrations.

Report issued by the U.S. Bureau of Mines on the properties of fluids produced from combination wells. The characteristics of test results of these fluids are described and presented. This report includes tables, graphs, illustrations, and photographs.

Report issued by the U.S. Bureau of Mines on the pegmatite deposits found near Tinton, South Dakota. The properties, and geology of the deposits are presented. This report includes tables, and maps.

Report issued by the U.S. Bureau of Mines over surveys conducted on the crude-oil inventory in the United States. Sampling methods, and survey results are presented. Tables and graphs are included in this report.

Circular describing organization, equipment, and materials, and procedure in fighting, sealing, and unsealing mine fires and in recovery operations at the time of or after fires or explosions.

From introduction: "In this paper are assembled and summarized many subjects relating to the copper industry in North America. Production of mines and districts, history of the industry in North America. Production of mines and districts, history of the industry, geology, of the principal deposits, and mining methods and costs are discussed."

From introduction: "The purpose of this bulletin is to discuss the theory of crushing and grinding in relation to present-day discoveries and developments and to consider the various mechanical appliances from a theoretical basis."

From Introduction: "This paper is divided into four sections concerned with coal tar and light oils produced by high- and low-temperature carbonization."

From Introduction: "The present paper discusses regional resources, chiefly of gold, the existence of which has long been demonstrated by substantial production but which are so nearly marginal in value that their mining has been protracted and will probably continue indefinitely for many decades."

Report published by the U.S. Bureau of Mines which is a compilation of accidents in quarries located in the United States with data regarding the number and kinds of accidents as well as information about the mining operations (e.g., number of men employed, kinds of quarries, amount of work performed, etc.).

From Scope of Report: "In connection with the study of the oil-shale resources of the United States, the Bureau of Mines has carried on not only extensive laboratory and field investigations but has constructed and operated an experimental shale-oil plant in Colorado. This report is based entirely upon subject matter that appeared in published and unpublished manuscripts of the Bureau of Mines."

Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.

From Introduction: "The composition and carbonizing properties of 33 coals previously tested have been given in technical papers of the Bureau of Mines and in short reports published for the most part in the Proceedings of the American Gas Association. A complete list of publications on the work previous to 1937 is appended to this report. The present report gives the composition and carbonizing properties of seven additional coals from West Virginia. The data include results of blending test in which Beckley bed low-volatile coal was used with all the high-volatile coals except the Alma coal, with which Pocahontas No. 4 coal was used."