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The Ferric Sulphate-Sulphuric Acid Process: With a Chapter on Producing Small Bubbles of Gas in Liquids by Submerged Orifices

Description: Report issued by the Bureau of Mines over studies conducted on the ferric sulphate-sulphuric acid process. As stated in the introduction, "the work reported here comprises merely a study of the chemistry of the process and the mechanical conditions that would have to be observed in practice" (p. 1). This report includes tables, and illustrations.
Date: 1927
Creator: Ralston, Oliver C. & Maier, Charles G.
Partner: UNT Libraries Government Documents Department
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Technology and Uses of Silica and Sand

Description: Report issued by the Bureau of Mines over studies conducted on the production and uses of silica. Forms and different uses for silica are discussed. This report includes tables, illustrations, and photographs.
Date: 1927
Creator: Weigel, W. M.
Partner: UNT Libraries Government Documents Department
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Subsidence Due to Coal Mining in Illinois

Description: Report issued by the Bureau of Mines over investigations on surface subsidence from coal mining in Illinois. The results of the investigations are presented and discussed. This report includes tables, illustrations, and photographs.
Date: 1927
Creator: Herbert, Charles Arthur & Rutledge, J. J.
Partner: UNT Libraries Government Documents Department
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Mining of Thin Coal Beds in the Anthracite Region of Pennsylvania

Description: Report issued by the Bureau of Mines over studies conducted on thin coal beds of the anthracite region in Pennsylvania. Results of the studies are presented and discussed. This report includes tables, maps, illustrations, and photographs.
Date: 1927
Creator: Ashmead, Dever C.
Partner: UNT Libraries Government Documents Department
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Measurement of the Moments of Inertia of Full Scale Airplanes

Description: "This paper contains a description of the method of measuring the moments of inertia of full scale airplanes as practiced by the National Advisory Committee for Aeronautics at the Langley Memorial Aeronautical Laboratory. The method, while not at all new, is published for the information and guidance of others who may desire to make similar measurements. The paper includes as an appendix the computations for the moments of inertia of 0-2 airplane" (p. 1).
Date: September 1927
Creator: Green, M. W.
Partner: UNT Libraries Government Documents Department
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Precision of Wing Sections and Consequent Aerodynamic Effects

Description: Note presenting an investigation to determine the precision of wing sections of wood fabric construction used on a number of airplanes. All of the wing sections were found to deviate more or less from their respective prototypes. The aerodynamic effects resulting from consideration of thickness variation are then estimated from existing empirical information.
Date: January 1927
Creator: Rizzo, Frank
Partner: UNT Libraries Government Documents Department
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Comparison of American, British, and German Standards for Metal Fits

Description: Report issued by the Bureau of Standards discussing the comparison of American, British, and German metal fit standards. The comparisons between national standards of the three countries are presented and described. This report includes tables, and illustrations.
Date: 1927
Creator: Fullmer, Irvin H.
Partner: UNT Libraries Government Documents Department
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Cooperative Measurements of Radio Fading in 1925

Description: Scientific paper issued by the Bureau of Standards over studies conducted on radio fading. As stated in the abstract, "the series of measurements on fading were devoted to studies of fading effects during the sunset period, effects during the solar eclipse of January 24, the fading variations throughout a 24-hour day, and the effects of high transmitting power on fading" (p. 419). This paper includes tables, maps, illustrations, and photographs.
Date: August 17, 1927
Creator: Dellinger, J. H.; Jolliffe, C. B. & Parkinson, T.
Partner: UNT Libraries Government Documents Department
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Quarry Problems in the Lime Industry

Description: From Introduction: "The purpose of this bulletin is not to describe individual quarries but to describe general methods of operation and give typical illustrations. The methods employed are discussed critically in an effort to elucidate the best working principles and to assist manufactures of lime in correcting errors and establishing their industry on the most economical and efficient basis."
Date: 1927
Creator: Bowles, Oliver & Myers, W. M.
Partner: UNT Libraries Government Documents Department
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Resistance of Metal-Mine Airways

Description: From Introduction: "This report describes the methods used and the results obtained in a series of experiments on the resistance that metal-mine airways offer to the flow of air."
Date: 1927
Creator: McElroy, G. E. & Richardson, A. S.
Partner: UNT Libraries Government Documents Department
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Production of Sponge Iron

Description: From Review of Sponge-Iron Processes: "This review of the development if the sponge-iron process to its present state gives only the important types of furnaces or processes tried."
Date: 1927
Creator: Williams, C. E.; Barrett, E. P. & Larsen, B. M.
Partner: UNT Libraries Government Documents Department
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Coal-Mine Fatalities in the United States, 1926

Description: Report compiled by the U.S. Bureau of Mines including statistics on fatalities 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: 1927
Creator: Adams, William W.
Partner: UNT Libraries Government Documents Department
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Petroleum Refinery Statistics, 1926

Description: Report discussing petroleum refinery statistics for 1926.
Date: 1927
Creator: Hopkins, G. R.
Partner: UNT Libraries Government Documents Department
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Placer-Mining Methods and Costs in Alaska

Description: From Scope of Bulletin: "This bulletin gives the results of a study of present conditions in Alaska placer mining, including the methods employed and the costs, and will be helpful to placer miners, engineers, and all others interested in the industry."
Date: 1927
Creator: Wimmler, Norman L.
Partner: UNT Libraries Government Documents Department
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Coal-Dust Explosion Tests in the Experimental Mine, 1919 to 1924, Inclusive

Description: From Introduction and Summary: "This bulletin describes the third series of coal-dust explosion tests by the Bureau of Mines in its experimental mine and covers a period from 1919 to the end of 1924, inclusive. A few related tests made in 1925 are also included."
Date: 1927
Creator: Rice, George S.; Paul, J. W. & Greenwald, H. P.
Partner: UNT Libraries Government Documents Department
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Acid Processes for the Extraction of Alumina

Description: Report presenting the Bureau of Mines' investigation into acid processes of extracting alumina. The paper discusses the sulphuric acid processes and other work with hydrochloric and nitric acids so that the comparative advantages can be appreciated.
Date: 1927
Creator: Tilley, George S.; Millar, Russell Ward & Ralston, Oliver Caldwell
Partner: UNT Libraries Government Documents Department
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Magnetic Concentration of Iron Ores of Alabama

Description: From Introduction: "The Birmingham district holds large deposits of red hematite, coal, and flux extends from Springville on the northeast to below on the southwest. The work was begun in July, 1923, and ores from a number of points within the Birmingham district have since been studied. A method of magnetic concentration has been investigated which, it is believed, will successfully remove a large part of the gangue and incur only a small loss of iron.
Date: 1927
Creator: Lee, Oscar; Gandrud, B. W. & De Vaney, F. D.
Partner: UNT Libraries Government Documents Department
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Petroleum Refinery Statistics, 1916-1925

Description: From Introduction: "The purpose of this report is twofold-to give a permanent printed record of all past data and to present them on the recently adopted basis of barrels instead of gallons."
Date: 1927
Creator: Hopkins, G. R.
Partner: UNT Libraries Government Documents Department
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Drilling and Blasting in Open-Cut Copper Mines

Description: From Introduction: "The drilling and blasting practices described in this bulletin are chiefly those in use at the time of these visits. Information, obtained by correspondence, on recent changes at certain mines is also included. The bulletin is confined to descriptions and comparisons of drilling and blasting methods at the six open-cut mines."
Date: 1927
Creator: Gardner, E. D.
Partner: UNT Libraries Government Documents Department
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Safeguarding Workmen at Oil Derricks

Description: From Introduction: "This bulletin presents some of the methods and devices used in the oil fields of the United States for reducing the number of accidents at derricks.
Date: 1927
Creator: Miller, H. C.
Partner: UNT Libraries Government Documents Department
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Quarry Accidents in the United States During the Calendar Year 1925

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: 1927
Creator: Adams, William W.
Partner: UNT Libraries Government Documents Department
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Gases from Blasting in Tunnels and Metal-Mine Drifts

Description: From Introduction: "This paper gives the results of sampling the gases from blasting drift rounds at five mines-the United Verde Extension, Calumet & Arizona, Old Dominion, Mountain Copper, and the United Verde-and of tunnel rounds at the Big Creek water tunnel and Moffat railroad tunnel. The paper also describes the rounds blasted and the methods of sampling and analyzing the gases. In all, 99 rounds were fired and 376 samples were taken."
Date: 1927
Creator: Gardner, E. D.; Howell, S. P. & Jones, G. W.
Partner: UNT Libraries Government Documents Department
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The Manganese Situation from a Domestic Standpoint

Description: From page 1: The purpose of this circular is to show the degree of dependence of the United States upon foreign sources for the manganese required by its industries.
Date: April 1927
Creator: Furness, J. W.
Partner: UNT Libraries Government Documents Department
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