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Abstracts of Current Decisions on Mines and Mining: May to September, 1918

Description: Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
Date: 1919
Creator: Thompson, J. W.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Abstracts of Current Decisions on Mines and Mining: September to December, 1918

Description: Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
Date: 1919
Creator: Thompson, J. W.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Abstracts of Current Decisions on Mines and Mining: January to May 1919

Description: Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
Date: 1919
Creator: Thompson, J. W.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Airplane dopes and doping

Description: Cellulose acetate and cellulose nitrate are the important constituents of airplane dopes in use at the present time, but planes were treated with other materials in the experimental stages of flying. The above compounds belong to the class of colloids and are of value because they produce a shrinking action on the fabric when drying out of solution, rendering it drum tight. Other colloids possessing the same property have been proposed and tried. In the first stages of the development of dope, however, shrinkage was not considered. The fabric was treated merely to render it waterproof. The first airplanes constructed were covered with cotton fabric stretched as tightly as possible over the winds, fuselage, etc., and flying was possible only in fine weather. The necessity of an airplane which would fly under all weather conditions at once became apparent. Then followed experiments with rubberized fabrics, fabrics treated with glue rendered insoluble by formaldehyde or bichromate, fabrics treated with drying and nondrying oils, shellac, casein, etc. It was found that fabrics treated as above lost their tension in damp weather, and the oil from the motor penetrated the proofing material and weakened the fabric. For the most part the film of material lacked durability. Cellulose nitrate lacquers, however were found to be more satisfactory under varying weather conditions, added less weight to the planes, and were easily applied. On the other hand, they were highly inflammable, and oil from the motor penetrated the film of cellulose nitrate, causing the tension of the fabric to be relaxed.
Date: January 1, 1919
Creator: Smith, W H
Item Type: Report
Partner: UNT Libraries Government Documents Department

The airplane tensiometer

Description: Certain parts of an airplane are subjected not only to the stresses imposed by the aerodynamic or flying load, but also to the initial stresses, caused by the tension in the stay and drift wires. Report describes a tensiometer that measures such stresses which is simple in construction, accurate, and easily and quickly operated even by inexperienced persons. Two sizes of the instrument are available. One is suitable for wires up to one-fourth inch in diameter and the other for wires from one-fourth to three-eights inch in diameter.
Date: 1919
Creator: Larson, L J
Item Type: Report
Partner: UNT Libraries Government Documents Department

An Apparatus for Measuring the Relative Wear of Sole Leathers, and the Results Obtained with Leather from Different Parts of a Hide

Description: Technical paper issued by the Bureau of Standards over studies conducted on the quality of sole leather. As stated in the introduction, "the development of a simple method for quickly determining the durability of sole leather seemed desirable, and this paper discusses a laboratory apparatus designed for this purpose and also presents the results of tests made to date to determine the relative wear of leather from different parts of the hide" (p. 3). This paper includes illustrations, and photographs.
Date: November 22, 1919
Creator: Hart, R. W. & Bowker, B. C.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Approximate Quantitative Microscopy of Pulverized Ores, Including the Use of the Camera Lucida

Description: Technical paper issued by the Bureau of Mines over microscopy of pulverized ores. As stated in the introduction, "this paper, which deals with the study of pulverized ores and the use of the camera lucida in such work, discusses an investigation undertaken at the Seattle and the Golden mining experiment stations of the Bureau of Mines" (p. 3). This paper includes tables, illustrations, and photographs.
Date: October 1919
Creator: Coghill, Will H. & Bonardi, J. P.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Bibliography of Petroleum and Allied Substances in 1916

Description: From Introduction: " This bibliography follows the same general scheme as the bibliography of petroleum and allied substances for 1915. References to articles in these journals have been taken from such sources as were available and credit has been given to those sources. American and foreign patents have been entered by title, without abstracts. A few minor changes have been made in the scheme of classification, which is, on the whole, the same is given in the 1915 bibliography."
Date: 1919
Creator: Burroughs, E. H.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Cost Keeping for Small Metal Mines

Description: Technical paper issued by the Bureau of Mines over the accounting for small metal mines. As stated in the introduction, "this report outlines methods of cost keeping suitable for metal mines of small or moderate size and presents various forms and cost sheets that have been found useful in actual practice" (p. 5). This paper includes tables, and illustrations.
Date: February 1919
Creator: Pickering, J. C.
Item Type: Report
Partner: UNT Libraries Government Documents Department

The Decline and Ultimate Production of Oil Wells, with Notes on the Valuation of Oil Properties

Description: From General Statement Purpose of the Report: "The present investigation was undertaken for the purpose of supplying some of the material so badly needed in the valuation and more efficient operation of oil properties. Because of the lack of time for further studies, the amount of data already accumulated and the policy of the Bureau of Mines of publishing as soon as possible any information that may be of use to an industry, the bulletin is issued now."
Date: 1919
Creator: Beal, Carl H.
Item Type: Report
Partner: UNT Libraries Government Documents Department

The Design of Wind Tunnels and Wind Tunnel Propellers

Description: Report discusses the theory of energy losses in wind tunnels, the application of the Drzewiecki theory of propeller design to wind tunnel propellers, and the efficiency and steadiness of flow in model tunnels of various types.
Date: January 1, 1919
Creator: Warner, Edward P.; Norton, F. H. & Hebbert, C. M.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Effect of Compression Ratio, Pressure, Temperature, and Humidity on Power

Description: Among other factors which affect the horsepower of an airplane engine are the atmospheric pressure, and consequently the altitude at which the engine is working, and the compression ratio, or cylinder volume divided by clearance volume. The tests upon which this report is based were selected from a large number of runs made during the intercomparison of various gasolines to determine the variation of horsepower with altitude at three different compression ratios. The test results and conclusions are presented in this report.
Date: January 1, 1919
Creator: Dickinson, H C; James, W S; Anderson, G V & Brinkerhoff, V W
Item Type: Report
Partner: UNT Libraries Government Documents Department

Effect of Rate of Temperature Change on the Transformations in an Alloy Steel

Description: Scientific paper issued by the Bureau of Standards over studies conducted on the effects of temperature change on alloy steel. The experimental methods used and the results are presented and discussed. This paper includes tables, photographs, and illustrations.
Date: July 10, 1919
Creator: Scott, Howard
Item Type: Report
Partner: UNT Libraries Government Documents Department

Electrodeposition of Gold and Silver from Cyanide Solutions

Description: From Introduction: "This report on the electrodeposition of gold and silver from cyanide solutions represents work that has occupied my time at intervals during the past 20 years, The investigations has been carried on simultaneously with my duties as professor of mining and metallurgy of the University of California."
Date: 1919
Creator: Christy, S. B.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Experiment Stations of the Bureau of Mines

Description: Report issued by the Bureau of Mines over the eleven experiment stations established near important mining fields. The work done by the stations are discussed. This report includes tables, illustrations, and photographs.
Date: August 1919
Creator: Manning, Van. H.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Explosives and Miscellaneous Investigations

Description: Report discussing explosives research requested by the U.S. Army and Navy and conducted by the Bureau of Mines.
Date: August 1919
Creator: Manning, Van. H.
Item Type: Report
Partner: UNT Libraries Government Documents Department

General Analysis of Airplane Radiator Problems

Description: Report embodies the results of a very extensive research, both theoretical and experimental, into the problems involved in the dissipation of heat by means of the airplane radiator.
Date: January 1, 1919
Creator: Dickinson, H C; James, W S & Kleinschmidt, R V
Item Type: Report
Partner: UNT Libraries Government Documents Department

General Discussion of Test Methods for Radiators

Description: Report describes the methods and apparatus developed and used in the extensive experimental research into the problems involved in the dissipation of heat by means of the airplane radiator.
Date: January 1, 1919
Creator: Dickinson, H C; James, W S & Brown, W B
Item Type: Report
Partner: UNT Libraries Government Documents Department

The Kiln Drying of Wood for Airplanes

Description: This report is descriptive of various methods used in the kiln drying of woods for airplanes and gives the results of physical tests on different types of woods after being dried by the various kiln-drying methods.
Date: January 1, 1919
Creator: Tiemann, Harry D
Item Type: Report
Partner: UNT Libraries Government Documents Department

The Limiting Velocity in Falling from a Great Height

Description: The purpose of this report is to give a simple treatment of the problem of calculating the final or limiting velocity of an object falling in vertical motion under gravity in a resisting medium. The equations of motion are easily set up and integrated when the density of the medium is constant and the resistance varies as the square of the velocity. The results show that the fundamental characteristics of the vertical motion under gravity in a resisting medium is the approach to a terminal or limiting velocity, whether the initial downward velocity is less or greater than the limiting velocity. This method can be used to calculate the terminal velocity of a bomb trajectory.
Date: January 1, 1919
Creator: Wilson, Edwin Bidwell
Item Type: Report
Partner: UNT Libraries Government Documents Department

Metering Characteristics of Carburetors

Description: Report presents the results of an extensive experimental investigation of the performance of different types of carburetors as effecting the maintenance under all conditions of correct ratio between the weights of fuel and air. It also gives a description of the Bureau of Standards carburetor test plant, test equipment and measuring instruments used to determine the metering characteristics of carburetors.
Date: January 1, 1919
Creator: Tice, Percival S & Dickinson, H C
Item Type: Report
Partner: UNT Libraries Government Documents Department