Report by the Bureau of Mines over oil-recovery methods and experiments conducted in Warren County. Preparation, methods, and results of the experiments are presented. This report includes tables, graphs, maps, and illustrations.

Report issued by the Bureau of Mines on the anthracite coal in the Bottom Red Ash Bed in Pennsylvania. The coal samples were analyzed for thickness and geologic structure. The amount of recoverable coal was also estimated. This report includes tables, maps, and illustrations.

From Introduction: "This report reviews related previous work and describes studies by the Bureau of Mines on (1) the development of new methods for analyzing phenols, (2) the development of a specific method for the determination of phenolic hydoxyl groups in coal, and (3) the preparation and properties of trimethylsiyl derivatives of individual phenols."

From Abstract: "This Bulletin presents, in collected and tabulated form, Bureau of Mines (Pittsburgh station) data pertaining to the plastic, agglutinating, and free-swelling characteristics of American coals."

From Introduction and Summary: "In the assessments of research objectives after World War II it was brought out that little effort had yet been expended on an understanding of turbulent flames.The present report deals exclusively with a second stage of work which was carried out between November 1954 and August 1959. This summary report includes a few new data, but its chief purpose is to reorient the findings toward a better appreciation of what has been accomplished and what most profitably might be done in the near future."

From Introduction: "The work in absorption spectrometry performed in the Bureau at Bruceton laboratories will be described in this bulletin."

Report issued by the U.S. Bureau of Mines discussing coal mining production and waste disposal. As stated in the introduction, this circular discusses anthracite refuse disposal (removal and utilization) practices and their effectiveness. Attention is also directed toward the rate of growth of the material, costs of disposal, and problems involving ownership of the refuse" (p. 2). This report includes maps, tables, illustrations, and photographs.

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, illustrations, and photographs.