Technical Report Archive and Image Library (TRAIL) - 25 Matching Results

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Clinker Formation as Related to the Fusibility of Coal Ash

Description: From Introduction Arrangement of Report: "The results of this investigation are presented in two main divisions. The first part covers the chemical and physical tests on average samples of the coals used-chemical analysis, float-and-sink tests to determine distribution of the ash, determination of the forms of sulphur, chemical analyses of the ash, and ash-fusabilibity determinations. The second part covers the clinkering studies and the comparisons of the results with the ash-fusibilty and other tests."
Date: 1932
Creator: Nicholls, P. & Selvig, W. A.
Partner: UNT Libraries Government Documents Department

Coal-Mine Accidents in the United States, 1930

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: 1932
Creator: Adams, W. W.; Geyer, L. E. & Chenoweth, L.
Partner: UNT Libraries Government Documents Department

Contributions to the Data on Theoretical Metallurgy: [Part] 1. The Entropies of Inorganic Substances

Description: From Introduction: "The present work is an attempt to collect all the available data referring to one important thermodynamic property and to supply sufficient discussion to make the results readily usable by metallurgists. In the study of chemical or metallurgical reactions two factors have predominant importance-the free energy of reaction and the speed of reaction. The subject of this publication is so closely allied to the former that may be well to consider briefly some of the uses to which free-energy data may be put."
Date: 1932
Creator: Kelley, K. K.
Partner: UNT Libraries Government Documents Department

Crater Wells, Richland Gas Field, Louisiana

Description: Technical paper issued by the Bureau of Mines over "the history of the craters in the Richland gas field. The data have been collected at various times over a period of four years. The equipment and methods of control are discussed, and photographs show the surface conditions at various intervals in the life of the craters" (p. 1). This paper includes tables, maps, photographs, and illustrations.
Date: 1932
Creator: Hill, Harry Blackburn
Partner: UNT Libraries Government Documents Department

The Ignition of Fire Damp by Explosives: A Study of the Process of Ignition by the Schlieren Method

Description: From Introduction: "The rupture of this paper by the explosion provided by the explosion provided rapid release for the pressure developed. The charge of explosive was placed in the bore of a cannon communicating with the gallery through a central hole in the steel plate. The apparatus is shown in Figures 1 and 2, which are reproduced from Perrott and Gawthrop's paper. In the event of a nonignition the flame from the explosive only was recorded."
Date: 1932
Creator: Shepherd, W. C. F.
Partner: UNT Libraries Government Documents Department

Liquid-Oxygen Explosives

Description: From Introduction: "The purpose of this bulletin is to examine the advantages and disadvantages of L. O. X., both in the light of experimental investigations by the Bureau of Mines and the results in actual blasting, and to discuss the probable future fields of usefulness for this novel type of explosive."
Date: 1932
Creator: Perrott, G. St. J. & Tolch, N. A.
Partner: UNT Libraries Government Documents Department

Methods and Costs of Mining and Preparing Sand and Gravel at the Plant of the Ward Sand and Gravel Co., Oxford, Michigan

Description: Report issued by the U.S. Bureau of Mines discussing the operation and production of the Ward Sand and Gravel Company in Oxford, Michigan. The methods and costs employed by the company are presented. This report includes tables, and illustrations.
Date: January 1932
Creator: Ward, Frederick L.
Partner: UNT Libraries Government Documents Department

Mining Petroleum by Underground Methods: A study of Methods used in France and Germany and Possible Application to Depleted Oil Fields under American Conditions

Description: From Introduction: "That the percentages of extraction of petroleum from the ground may and undoubtedly will be greatly increased in the future by underground mining methods where natural conditions will permit seems logical. The limitations imposed by depth, temperature, and flow of water under high pressure through the sands will be discussed later."
Date: 1932
Creator: Rice, George S.
Partner: UNT Libraries Government Documents Department

Paraffin and Congealing-Oil Problems

Description: From Scope of Report: "This report is in two parts-the major or first part is a discussion of the results obtained from field studies of the factors responsible for the deposition of paraffin and the congealing of oil and of practical methods of combating these problems. The second part of the report deals with the analyses of crude waxes or paraffin obtained from different representatives crude oils."
Date: 1932
Creator: Reistle, C. E., Jr.
Partner: UNT Libraries Government Documents Department

Permissible Electric Cap Lamps and Ventilation in Certain California Mines and Water-Tunnel Construction

Description: From Introduction: "As a result of the recommendations of this committee, special studies have been made of the methane hazards incident to mining and tunneling operations in the Coast Range Mountains. These studies have resulted in the adoption of numerous safety precautionary measures; among them the use of permissible types of mining equipment, electric cap lamps, with which this deals with primarily."
Date: 1932
Creator: Ash, S. H. (Simon Harry), b. 1889 & Rankin, J. H.
Partner: UNT Libraries Government Documents Department

Petroleum Refinery Statistics: 1930

Description: From Summary: "The year 1930 marked a turning point in record-breaking performances for refining industry. From the time of the first refinery statistics of the Bureau of Mines in 1916 through 1929 the utilization of crude at refineries and the production of the principal product (motor fuel) has increased steadily. In 1930, however, the depressed conditions had a noticeable effect on motor-fuel consumption, which only increased 5 per cent over that in 1929, compared with an average annual increase for the preceding decade of 16 per cent.
Date: 1932
Creator: Hopkins, G. R.
Partner: UNT Libraries Government Documents Department

Procedure of the Purchasing and Supply Departments of the Miami Copper Company, Miami, Arizona

Description: Report issued by the U.S. Bureau of Mines discussing the purchasing procedures documented by the Miami Copper Company in Arizona. Supplies, invoices, discounts, and accounting procedures are described in detail. This report includes tables, and illustrations.
Date: May 1932
Creator: Bishop, Fred L. & Keller, Albert E.
Partner: UNT Libraries Government Documents Department

Properties of Crude Oil From the Greasewood Flat Area in Colorado

Description: Report issued by the U.S. Bureau of Mines on two samples of crude oil collected from the Greasewood Flat area of northwestern Colorado. These samples were analyzed for many characteristics, and an approximate summary of those characteristics are presented. The report contains two tables of data.
Date: May 1932
Creator: Rue, H. P.
Partner: UNT Libraries Government Documents Department

Quarry Accidents in the United States During the Calendar Year 1930

Description: 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.).
Date: 1932
Creator: Adams, William W.
Partner: UNT Libraries Government Documents Department

Rubber-Sheathed Trailing Cables

Description: From Introduction: "This paper records activities of the United States Bureau of Mines covering several years and reflects its endeavor to be of service to the coal-mining industry in procuring safer trailing cables for use on permissible machines."
Date: 1932
Creator: Ilsley, L. C.; Hooker, A. B. & Coggeshall, E. J.
Partner: UNT Libraries Government Documents Department

Safety Practices in California Gold Dredging

Description: From Introduction Purpose of Report: "The importance of safety work in connection with the operations of gold dredges assumed such proportions at one time that the State of California deemed it necessary to issue a special bulletin on this subject."
Date: 1932
Creator: Ash, S. H. (Simon Harry), b. 1889
Partner: UNT Libraries Government Documents Department

Sampling and Estimation of Ore Deposits

Description: Report issued by the Bureau of Mines over the sampling and analyses of ore deposits. Methods, problems, and results are presented and discussed. This report includes tables, and illustrations.
Date: 1932
Creator: Jackson, Charles Freeman & Knaebel, John B.
Partner: UNT Libraries Government Documents Department

Shaft-Sinking Practices and Costs

Description: From Introduction: "This paper describing the methods of sinking shafts is one of a series of mining practices and costs being prepared by the United States Bureau of Mines. The best methods of performing all phases of shaft sinking are discussed herein, with particular to the practices at metal mines."
Date: 1932
Creator: Gardner, E. D. & Johnson, Fred J.
Partner: UNT Libraries Government Documents Department

Tests of Rock-Dust Barriers in the Experimental Mine

Description: From Introduction: "The results summarized above are discussed in appropriate sections of this paper. One section is also devoted to barrier installations in commercial mines and gives the experience and opinion of the authors on the matter. The final sections deal with theoretical considerations involved in barrier operation."
Date: 1932
Creator: Rice, George S.; Greenwald, H. P. & Howarth, H. C.
Partner: UNT Libraries Government Documents Department