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Mechanical Shoveling in Underground Metal Mines

Description: From Scope of Bulletin: "The object of the current bulletin is to present recent data on mechanical shoveling in underground metal mines and in selected nonmetal mines. This bulletin supplements the 1924 edition, but the main discussion covers mechanical shoveling only, because most of the new material relates to equipment recently developed, to improved technique in loading, and ti changes in loading practice in certain mining districts."
Date: 1940
Creator: Mosier, McHenry & Steinmesch, J. H.

Mechanical Concentration of Gases

Description: From Introduction: "This bulletin deals with a new mechanical means of attacking the problem of separation. Although it is improbable that any one type of separation could hope to find universal application, the method described is to be regarded as an alternative to conventional means that has attractive possibilities in certain instances."
Date: 1940
Creator: Maier, C. G.

Analyses of Complex Mixtures of Gases: Application to Control and Extinguish Fires and to Prevent Explosions in Mines, Tunnels, and Hazardous Industrial Processes

Description: From Purpose of Report: "The purpose of the report is to point out what the mine-management official, the safety engineer, and the chemist, can do to utilize analyses of complex gas mixtures as basis for safe procedure to (1) control and extinguish fires in mines, tunnels, and individual plants and (2) prevent explosions when dealing with explosive mixtures and sources of ignition. The report is designed to meet the needs of those desiring to utilize analyses of complex-gas mixtures for the above-mentioned purpose."
Date: 1948
Creator: Ash, S. H. & Felegy, E. W.

Development and Use of Certain Flotation Reagents

Description: From Forward: "When the experiments described in this bulletin were begun many of the reagents were available only in trial quantities. Some of them are now available in commercial quantities and are of different compositions from those that were available for experimental work. It was not possible to determine the exact chemical composition of some of the reagents."
Date: 1944
Creator: Dean, R. S. & Ambrose, P. M.

Fire-Retardant Treatments of Liquid-Oxygen Explosives

Description: From Introduction Present Investigation: "The scope of the investigation was limited to study of the effects of fire-retardant treatments on the resistance to ignition, physical characteristics, and practical hazards of handling the liquid-oxygen explosive prepared from the granular carbonaceous absorbent mentioned, from wrappers of a triple-filled canvas, and from a liquid oxygen of standard high purity."
Date: 1940
Creator: Denues, A. R. T.

Diatomites of the Pacific Northwest as Filter-Aids

Description: From Introduction Purpose of Investigation: "To determine some of the physical and chemical properties of known Pacific Northwest diatomites, the present investigation was started in 1938 by the Bureau of Mines in cooperation with the College of Mines, University of Washington.
Date: 1944
Creator: Skinner, Kenneth G.; Dammann, Arthur A.; Swift, Roy E.; Eyerly, George B. & Shuck, Gordon R., Jr.

Coals of Chile

Description: From Introduction: "The purpose of this investigation was to determine whether the coal from beds mined in the Schwager and Lota mines will produce metallurgical coke suitable for use in the blast furnaces at the proposed steel plant at Conception, and whether the quality of the lower-rank coals from other areas in Chile, especially those in Magallanes, where the large coal reserves of Chile appear to exist; can be improved by processing."
Date: 1948
Creator: Toenges, Albert L.; Kelly, Leon W.; Davis, J. D.; Reynolds, D. A.; Fraser, Thomas; Crentz, W. L. et al.

Potash Salts from Texas-New Mexico Polyhalite Deposits: Commercial Possibilities, Proposed Technology, and Pertinent Salt-Solution Equilibria

Description: From Introduction: "Figure 1 shows the location of sources that have been either exploited or seriously considered at one time or another, super-imposed upon a map indicating by small letters the order of consumption of K2O in the leading States; the amount used in these States, together with the percentage of the total consumption of potash used as fertilizer in the United States in 1939, is given in table 1. Figure 2 shows the domestic production and total consumption of potassium salts, in terms of tons of K2O, with the value per unit at the plants, for each year since 1913. Considered together, these two figures tell a significant story."
Date: 1944
Creator: Conley, John E. & Partridge, Everett P.

An Index of Shale-Oil Patents

Description: From Introduction: "Work on this project was begun early in 1944; and the results with respect to shale oil are reported in this Bulletin. Since this bulletin is only an index to this large repository of ideas relating to the the treatment of shale oil, the material is presented in the form of short notices describing the subject material of each patent, which consist of an abridgment of the patent (if British or Australian) or a typical claim in the case of the United States or foreign patents."
Date: 1948
Creator: Klosky, Simon

Burning Washington Coals on Different Types of Domestic Stokers in the Same Hot-Water Boiler: Comparison with Hand and Oil Firing

Description: From Purpose and Scope: "This bulletin presents the results of an investigation of domestic stokers at the Northwest Experiment Station of the Bureau of Mines. Previous publications have dealt with the burning characteristics of Washington coals on a domestic overfeed stoker, a clinker-type domestic underfeed stoker, and an ash-removal-type domestic underfeed stoker designed for burning anthracite. This report includes all the principal results obtained on the three domestic stokers tested and compares these results with those obtained on the same hot-water boiler by hand-firing and oil-firing."
Date: 1949
Creator: Yancey, H. F.; Johnson, K. A.; Cordiner, J. B., Jr.; Lewis, A. A. & Lunde, K. E.

The National Fuel Efficiency Program During the War Years, 1943-45

Description: From Forward: "This bulletin describes how the work was accomplished, including the functioning of the central office, the division of the nation into working areas, the acquiring of volunteer workers, the functioning of the area offices, and achievement of publicity. Representative resulting fuel saving at a number of individual plants are listed, as well as the estimated over-all accomplishments. This report should be of future value as an example of national organizing of volunteer workers, in addition to serving as a historical record."
Date: 1949
Creator: Barkley, J. F.; Cheasley, Thomas C.; Waddell, K. M. & Waddell, K. M.

Report Submitted to the Trail Smelter Arbitral Tribunal

Description: From Forward: "The first part of this report discusses the details of the plant equipment and procedure. The second part of the report discusses in detail the relationship between between meteorological conditions in the valley and atmospheric diffusion processes. The third part gives the provisional operating regimes in force during the investigation, the amount of sulfur fixed and amount emitted to the atmosphere, and summary of data from the permanent recorders."
Date: 1944
Creator: Dean, R. S. & Swain, R. E.

Syllabus of Clay Testing: Part 1

Description: From Introduction: "This presentation (pt. 1) is what might be termed a qualitative syllabus, in that uses only are indicated, no attempt being made to evaluate a clay quantitatively, that is, to grade for particular uses. In part 2, which is to follow, the work will be amplified both qualitatively and quantitatively. In the first, preliminary tests are made to eliminate from consideration all nonclay minerals or clay minerals containing such large amounts of impurities as to render them unfit for normal uses and also to make a broad general classification of the clay minerals into the kaolinite (shales and clays) and montmorillonite groups. In the second step, the main tests, divided into two general headings, ceramic and noncermaic, are detailed."
Date: 1943
Creator: Klinefelter, Theron A.; O'Meara, Robert G.; Gottlieb, Sidney & Truesdell, Glenn C.

A Guide for Reducing Fuel Consumption in Commercial Plants

Description: From Forward: "This bulletin of the handbook type assembles in one volume educational "quiz sheets" and reference material used in the program that have permanent value in detecting waste and in lowering fuel consumption. It is believed that this handbook will serve the same purpose in the postwar period and aid in good measure the efficiency of fuel utilization."
Date: 1947
Creator: Barkley, J. F.; Cheasley, Thomas C.; Waddell, K. M. & Waddell, K. M.

Mineral-Dressing Characteristics of the Red Iron Ores of Birmingham, Alabama

Description: From Introduction: "The scope of this paper is such that it was deemed advisable to group the contents into several main sections. They are: Section I. Geography and Geology. Section II. Historical Review. (a) Mining and Smelting in Alabama. (b) Milling. (c) Summary of Milling Research. These two sections are primarily a bibliography and summary of the research on the Birmingham Red Mountain ores up to the middle 1940's."
Date: 1946
Creator: Coghill, Will H. & Coe, G. Dale

Contributions to the Data on Theoretical Metallurgy: [Part] 10. High-temperature Heat-Content, Heat-Capacity, and Entropy Data for Inorganic Compounds

Description: From Introduction: "This work is both a revision and an elaboration of Bureau of Mines Bulletin 371, which was published in 1934 and included data available to October 1933. This bulletin purposes to collect and correlate all available high-temperature heat-content and specific-heat data for inorganic substances and to formulate tables and algebraic expressions for their representation. It is expected also that this bulletin will have value to those teaching courses in metallurgical and chemical thermodynamics."
Date: 1949
Creator: Kelley, K. K.

Contributions to the Data on Theoretical Metallurgy: [Part] 9. The Entropies of Inorganic Substances. Revision (1940) of Data and Methods of Calculation

Description: From Introduction: "This bulletin originally was planned as a second revision of the first member of this series, the first revision (249) having appeared in 1936; however, because of requests for the explanatory, section of the first bulletin from those teaching thermodynamics, it was decided to combine the information in the first bulletin and its revision with the data that have appeared since 1935 and to repeat the explanatory material in somewhat more detail. The purpose of this bulletin is therefore to give the available values of the entropies at 298.1 degrees K. of the elements and inorganic compounds, together with enough explanation of the methods employed in calculating entropies to make the results comprehensible."
Date: 1941
Creator: Kelley, K. K.

Coal-Mine Accidents in the United States, 1938

Description: 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.
Date: 1941
Creator: Adams, W. W.; Geyer, L. E. & Parry, M. G.