UNT Libraries Government Documents Department - 349 Matching Results

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Characterization of Tar Acids from Coal-Hydrogenation Oils

Description: From Introduction: "The purpose of this investigation was to separate and identify as many of the principal phenolic compounds produced by the mild hydrogenation of Pittsburgh-bed (Bruceton) coal as possible and to determine with the greatest possible accuracy the proportions in which they are present."
Date: 1950
Creator: Woolfolk, E. O.; Golumbic, C.; Friedel, R. A.; Orchin, Milton & Storch, H. H.
open access

Chrysotile-Asbestos Deposits of Arizona

Description: 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.
Date: January 1955
Creator: Stewart, L. A.
open access

Chrysotile-Asbestos Deposits of Arizona: Supplement to Information Circular 7706

Description: Report issued by the U.S. Bureau of Mines discussing asbestos mining and production in Arizona. As a supplement to a previous report, 18 additional Arizona mining districts are presented and described. This report includes tables, maps, illustrations, and photographs.
Date: May 1956
Creator: Stewart, Lincoln A.
open access

Coal Deposits in the Deep River Field, Chatham, Lee, and Moore Counties, N.C.

Description: From Introduction: "An investigation by diamond drilling was undertaken by the Bureau of Mines at the instance of officials of the State of North Carolina to determine the thickness and continuity of the coal beds, physical conditions in and surrounding the beds that would influence mining, and the petrographic and chemical characteristics of the coals."
Date: 1952
Creator: Toenges, Albert L.; Turnbull, Louis A.; Shields, Joseph J.; Haley, Wilbur A.; Parks, B. C.; Abernethy, Roy F. et al.
open access

The Coal Industry of Brazil: Part 2. Technology of Mining and Preparation

Description: Report issued by the Bureau of Mines discussing the coal industry in Brazil. An emphasis is placed on the technological advancements of mining and preparation of coal. This report includes tables, maps, illustrations, and photographs.
Date: 1951
Creator: Good, John E.; Abreu, Alvaro & Fraser, Thomas
open access

Coal-Mine Bumps: Some Aspects of Occurence, Cause and Control

Description: From Introduction: "The purpose of this report is to analyze the coal-mine bumps that have occurred on pillar lines during the past 25 years in the hope that the analyses and the conclusions drawn will aid mining engineers and other mine officials in improving layouts and face mining methods in mines where bumps reasonably may be expected to occur."
Date: 1954
Creator: Holland, Charles T. & Thomas, Edward
open access

Combustion of Solid Fuels in Thin Beds

Description: From Introduction: "The investigations described in this report are a continuation and extension of these commercial and pilot-scale tests to include an investigation of the ignition and burning of solid fuels in thin beds, as on traveling - or chain grate stokers and a study of pure crossfeed combustion."
Date: 1957
Creator: Carman, E. P.; Graf, E. G. & Corey, R. C.
open access

Comparison of BM-AGA and Slot-Oven Experimental Methods of Carbonization, with Results for Eleven Coals

Description: From Introduction and Summary: "However, with the completion and satisfactory performance of an experimental vertical slot oven of 500-pound capacity at the University of Illinois Geological Survey Laboratory, the opportunity to directly compare BM-AGA coke with coke made by two-sided heating became available and the necessary test apparatus was installed. This report compares the results obtained by the two methods."
Date: 1950
Creator: Davis, J. D.; Reynolds, D. A.; Wolfson, D. E. & Birge, G. W.
open access

Conditioning Water for Secondary-Recovery in Midcontinent Oil Fields

Description: Report issued by the U.S. Bureau of Mines on results from a study of water-injection plants in the mid-continent oil producing area. The report lists the field methods used, and the analysis of available water for injection. This report includes maps, illustrations, and photographs.
Date: December 1952
Creator: Watkins, J. Wade; Willett, F. R., Jr. & Arthur, Charles E.
open access

Contributions to the Data on Theoretical Metallurgy: [Part] 11. Entropies of Inorganic Substances: Revision (1948) of Data and Methods of Calculation

Description: From Introduction: "The present bulletin also contains all the pertinent explanatory matter that appeared in its predecessors. Thus, it retains the same dual purpose of assembling the available values of the entropies at 298.16 degrees K of the elements and inorganic compounds and giving enough explanation of methods of calculating entropies to make the results comprehensible."
Date: 1950
Creator: Kelley, K. K.
open access

Contributions to the Data on Theoretical Metallurgy: [Part] 12. Heats and Free Energies of Formation of Inorganic Oxides

Description: From Introduction: "This bulletin purposes to collect and compile, in readily usable form, heat and free-energy-of-formation data for inorganic oxides. Such data are used in evaluating heat balances in metallurgical processes, in appraising possible improvements in existing metal extractive methods, and as a guide in the search for better methods of producing metals of recent or possible future commercial interest."
Date: 1954
Creator: Coughlin, James P.
open access

Control of Metallurgical and mineral dusts and fumes in Los Angeles County, California

Description: Report issued by the U.S. Bureau of Mines discussing metallurgical and mineral fumes and dusts in Los Angeles County, California. Properties of dusts and fumes from different minerals are presented. This report includes tables, maps, illustrations, and photographs.
Date: April 1952
Creator: Allen, Glenn L.; Viets, Floyd H. & McCabe, Louis C.
open access

Conversion of Nicaro Nickel Oxide to Nickel Metal

Description: Report issued by the Bureau of Mines over testing conducted on nickel oxide to produce nickel metal. Details of testing methods and results are presented. This report includes tables, illustrations, and photographs.
Date: 1959
Creator: Mahan, W. M.; Melcher, N. B.; Riott, J. P. & Ostrowski, E. J.
open access

Corrosion and Deposits in Regenerative Air Preheaters

Description: Report issued by the U.S. Bureau of Mines on the field tests performed on air preheaters. It also discusses the corrosion resistance of different materials, and their corrosive effects. This report contains tables, graphs, photographs and illustrations.
Date: August 1953
Creator: Barkley, J. F.; Karlsson, Hilmer; Berk, A. A.; Stark, C. F. & Burdick, L. R.
open access

Corrosive and Erosive Effects of Acid Mine Waters on Metals and Alloys for Mine Pumping Equipment and Drainage Facilities: Anthracite Region of Pennsylvania

Description: 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." more
Date: 1955
Creator: Ash, S. H.; Dierks, H. A.; Felegy, E. W.; Huston, K. M.; Kennedy, D. O.; Miller, P. S. et al.
open access

Data on Pumping at the Anthracite Mines of Pennsylvania

Description: Report issued by the U.S. Bureau of Mines on the study of pumping at anthracite mines in Pennsylvania. The study was conducted in order to solve anthracite mine-water problems. The report includes maps, photographs, and illustrations.
Date: September 1950
Creator: Ash, S. H. (Simon Harry), b. 1889; Eaton, W. L.; Gilbert, Joseph C.; James, H. M.; Jenkins, Hayden E.; Kennedy, D. O. et al.
open access

Description and Operation of the N-T-U Retort on Colorado Oil Shale

Description: Report issued by the Bureau of Mines over studies conducted on Colorado oil-shale. Description of the N-T-U retort is presented. This report includes tables, photographs, and illustrations.
Date: November 1956
Creator: Ruark, J. R.; Berry, K. L. & Guthrie, Boyd
open access

Development and Preliminary Operation of the Gas-Combustion Oil-Shale Pilot Retort

Description: 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.
Date: November 1955
Creator: Matzick, Arthur; Ruark, J. R. & Putman, M. W.
open access

Development of a Mobile Compressor and Utility Station

Description: Report issued by the U.S. Bureau of Mines on the development of a mobile compressor and utility station in the oil-shale mine near Rifle, Colorado during 1949. The report includes photographs and illustrations of the mobile station.
Date: July 1950
Creator: Wright, Fred D. & Ballinger, Homer J.
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