Report issued by the Bureau of Mines over the production and use of asbestos. Descriptions of the different types of asbestos are discussed. Its applications are also discussed. This report includes tables, illustrations, and photographs.

Report issued by the Bureau of Mines over the patents of the Fischer-Tropsch synthesis. As stated in the introduction, "this review contains abstracts of the technical literature and patents dealing with the history, development, and commercial applications of the Fischer-Tropsch synthesis" (p. iii).

Report issued by the U.S. Bureau of Mines discussing asbestos mining and production in Arizona. As stated in the summary, "this paper describes most of the chrysotile-asbestos deposits of Arizona. Mining methods are discussed briefly and asbestos-mill flowsheets are incorporated" (p. 1). This report includes tables, maps, illustrations, and photographs.

From Summary: "This report presents data on the corrosive and erosive effects of acid mine waters in the anthracite region on metals and alloys for pumping equipment and drainage facilities necessary to remove or control this water. This report is based on field tests conducted cooperatively by the Armco Steel Corp. and the Federal Bureau of Mines from January 1953 to June 1954 to determine the most suitable materials for constructing pumping equipment designed to handle these acid mine waters."

Report issued by the Bureau of Mines over operations of an oil-shale pilot plant. As stated in the summary, "this report describes the step-by-step development of the Gas-Combustion retort and the various modifications and means of air admission used to obtain a workable unit" (p. 2). This report includes tables, graphs, and illustrations.

Report issued by the Bureau of Mines over investigations of coking coal reserves of Anderson County, Tennessee. Testing to determine suitability for producing metallurgical coke is also presented. This report includes tables, maps, photographs, and illustrations.

Report issued by the Bureau of Mines over investigations of coking coal reserves of Overton County, Tennessee. Testing to determine suitability for producing metallurgical coke is also presented. Methods used, and measurements of coal reserves are listed. This report includes tables, maps, and illustrations.

Report issued by the Bureau of Mines over investigations of coking coal reserves of Sequatchie County, Tennessee. Testing to determine suitability for producing metallurgical coke is also presented. This report includes tables, graphs, maps, illustrations, and photographs.

Report issued by the Bureau of Mines over investigations of coking-coal reserves of Brooke County, West Virginia. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.

Report issued by the Bureau of Mines over investigations of coking-coal reserves of Greene County, Pennsylvania. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.

Report issued by the Bureau of Mines over investigations of coking-coal reserves of Grundy County, Tennessee. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.

Report issued by the Bureau of Mines over investigations of coking-coal reserves of Ohio County, West Virginia. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.

Report issued by the Bureau of Mines over investigations of coking-coal reserves of Washington County, Pennsylvania. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.

Report issued by the Bureau of Mines over investigations of coking coal reserves of Marion County, Tennessee. Testing to determine suitability for producing metallurgical coke is also presented. This report includes tables, maps, and illustrations.

From Scope of Paper: "This paper mainly consist of a discussion of design features of explosion-proof units that have been employed in the construction of permissible machines."

Report issued by the Bureau of Mines over production of titanium-manganese alloy plates from arc-melted ingots. As stated in the summary, "for the alloy material, transformation data were obtained, and their age-hardening characteristics were studied. The temperature-impact relationship was established for rolled sections from all three ingots" (p. 1). This report includes tables, graphs, and photographs.

From Scope of Report: "This report covers the following: (a) A brief description of the work contemplated under Project No. 3 as an integral part of the Conowingo tunnel system; (b) an economic discussion of the area affected; (c) the geology and hydrology of the Northern field, including the Wyoming Basin; (d) the basic problem, plans, and costs, and the construction schedule of the project; (e) an economic analysis and a justification for the project; (f) recommendations and cooperation of local interests; and (g) final conclusions."

From Summary: "This report covers the second in a series of five projects into which the Conowingo tunnel system has been divided for geographical and practical reasons. It outlines the construction work contemplated-to sink two shafts on the line of the main tunnel that are designated the Nos. 9A and 11 shafts, to turn off from the No. 9A shaft the Landsford and Lykens laterals, and to drive portions of the main tunnel."

From Purpose: "The purpose of this paper is to discuss briefly the analysis of complex mixtures of gases encountered in mine fires and to illustrate application of such data in fire-fighting procedures. This report illustrates how analyses of mine-fire gases can be utilized to determine the progress of mine fires as well as to establish safe tactics for controlling and extinguishing these fires.

From Description of Data: "The data in this bulletin were compiled from reports furnished by producers on two questionnaires of the Bureau of Mines, Form 6-1420, "Employers Report of Coal-Mine Injury," and Form 6-1420A, "Coal-Mine Injuries and Employment." Exposure, tonnage, and operating data were reported monthly from mines employing 20 or more men daily and annually from mines employing less than 20 men. Injury and employment data cover all men at an operation who were engaged in production, development, maintenance, and repair work, including supervisory and technical personnel."

From Introduction and Summary: "The injury data and experience at coke ovens in the United States for 1952 are presented in this bulletin under the following general sections: (A) General injury experience: Tables 1 to 9: Contain current and comparable data on operating statistics, number and classification of injuries, frequency rates, and accident agencies involved in causing injuries. Data are given for the industry as a whole, for each type of oven, and for the States in which coke is manufactured. (B) Selected injury experience: Tables 10 to 15: Contain comparable injury data in the coking industry covering 5-and 10 year periods on the number of injuries, accident agencies, and severity of injuries. (C) Historic injury experience: Tables 16 to 19: Contain data on the number of injuries, frequency rates, and employment at coke ovens from the earliest records through 1952. Operating statistics from 1929 through 1952 are given in table 19."

From Introduction and Summary: "The Injury and related employment experience of the coking industry in the United States for 1953 contained in this bulletin are presented under three general sections, as follows: (A) General injury experience: Tables 1 to 9: Contain current and comparable statistics on operating data, number, frequency, and severity of injuries, and major accident agencies involved in the cause of injuries. (B) Selected injury experience Tables 10 to 15: Contain comparable injury data covering 5- and 10-year periods on the number and severity of injuries and major accident agencies. (C) Historic injury experience: Tables 16 to 19: Contain data on the number and rates of injury occurrence and related employment statistics on the industry from earliest records through 1953."

From Introduction and Summary: "The quarries covered by this report have been classified according to the kind of rock produced, as follows: Cement rock (including limestone or other stone used in making cement), limestone, marble, sandstone, slate, traprock, and granite. The tables in this bulletin represent all phases of the quarrying industry, except sand, gravel, and clay."

Report issued by the Bureau of Mines over studies conducted on the copper-nickel deposits of Lake County, Minnesota. As stated in the introduction, "this report describes the procedures and results of the drilling program as well as the metallurgical work and laboratory studies" (p. 1). This report includes tables, maps, and illustrations.