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Talc and Soapstone: Their Mining, Milling, Products and Uses

Description: Report issued by the Bureau of Mines over talc and soapstone. The different mining methods, as well as their uses are discussed. This report includes tables, illustrations, and photographs.
Date: 1923
Creator: Ladoo, Raymond B.
Partner: UNT Libraries Government Documents Department
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Timbering of Metal Mines

Description: Report issued by the Bureau of Mines over the importance of timbering in metal mines. The reasons and methods for timbering are presented and discussed. This report includes illustrations, and photographs.
Date: June 1923
Creator: Holbrook, Elmer Allen; Ageton, Richard V. & Tufft, Harry E.
Partner: UNT Libraries Government Documents Department
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Bibliography of Petroleum and Allied Substances in 1919 and 1920

Description: Report issued by the Bureau of Mines consisting of bibliographies for petroleum bulletins. The bibliographies for bulletins published between 1919 and 1920 are presented.
Date: January 1923
Creator: Burroughs, Elizabeth Harding
Partner: UNT Libraries Government Documents Department
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Explosives: Their Materials, Constitution, and Analysis

Description: Report issued by the Bureau of Mines over studies conducted on types of explosives. Properties, materials, and methods of different explosives are discussed. This report includes tables, and illustrations.
Date: January 1923
Creator: Taylor, Carl A. & Rinkenbach, William Henry
Partner: UNT Libraries Government Documents Department
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The Electrothermic Metallurgy of Zinc

Description: Report issued by the Bureau of Mines over the electrothermic metallurgy and smelting of zinc. Different smelting methods, processes, and equipment are presented and discussed. This report includes tables, illustrations, and photographs.
Date: May 1923
Creator: O'Harra, B. Marvel
Partner: UNT Libraries Government Documents Department
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Results of Assays of the New Albany Oil-Shale

Description: Report issued by the U.S. Bureau of Mines on a survey of the New Albany oil-shale deposits in Indiana. The experimental procedures for surveying and sampling these shale deposits are presented in detail. This report includes tables, and graphs.
Date: June 1923
Creator: Reeves, John R.
Partner: UNT Libraries Government Documents Department
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The Use of Oxygen or Oxygenated Air in Metallurgical and Allied Processes: Report of the Committee for the Application of Oxygen or Oxygenated Air

Description: Report issued by the U.S. Bureau of Mines on the possibilities of applying oxygenated air during metallurgical and allied processes. The methods and results of applying oxygenated air to these processes are presented. This report includes tables and graphs.
Date: July 1923
Creator: Davis, F. W.
Partner: UNT Libraries Government Documents Department
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Industrial Accidents in the California Oil Fields

Description: Report issued by the U.S. Bureau of Mines on a study of the causes of employee accidents in California oil fields during the year of 1921 - 1922. This investigation was conducted to develop safety procedures and future accident prevention. This report includes tables.
Date: December 1923
Creator: Miller, H. C.
Partner: UNT Libraries Government Documents Department
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Control of Airplanes at Low Speeds

Description: Loss of control over the orientation of an airplane as the incidence approaches and enters the region of stalled flight is a prolific cause of serious accidents. This report discusses methods of landing at slow speeds approaching stall.
Date: September 1923
Creator: Wood, R. McKinnon
Partner: UNT Libraries Government Documents Department
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Monoplanes or Biplanes?

Description: This article presents a discussion of the relative merits between monoplanes and biplanes. A comparison of the aerodynamic qualities and advantages of both types are provided.
Date: November 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Inherent Stability of Helicopters

Description: The equilibrium, in still air, of a "stationary" helicopter (i.e., of one having neither vertical nor translational velocity, but a tendency to remain practically motionless within restricted limits of space) presents some difficulty in practice and justifies a theoretical investigation of its "inherent stability," i.e., independent of the pilot.
Date: October 1923
Creator: Crocco, G. Arturo
Partner: UNT Libraries Government Documents Department
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Absorbing landing shocks

Description: Report discussing tires, steel springs, hydraulic shock absorbers, and axle travel are all examined in relation to absorbing landing shocks.
Date: August 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Airplane Speeds of the Future

Description: While the reliability of predictions is poor the author still attempts to gauge the future speeds of airplanes.
Date: January 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Seaplanes for Commerce

Description: The advantages of using seaplanes for commercial purposes is discussed. The three primary advantages described include their superior speeds over existing means of transport on the same routes, the available landing fields when flying over the water, and the reduction of distance from the airport to the city is serves due to the seaplane's ability to land in water.
Date: March 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Wind-Driven Propellers (Or "Windmills")

Description: Wind-driven propellers are much used as sources of power for equipment such as radios. This report establishes the principles involved and acquaints the reader with rules for design of such windmills.
Date: April 1923
Creator: Munk, Max M.
Partner: UNT Libraries Government Documents Department
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Wind Tunnel of Zeppelin Airship Company

Description: This report discusses the general considerations for the design of aerodynamic laboratories. The dimensions, construction, and components of the wind tunnel are given special attention.
Date: April 1923
Creator: Munk, Max M.
Partner: UNT Libraries Government Documents Department
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My Experience With Helicopters

Description: The author recounts his experiments with helicopters. The object of his investigations was to remain stationary in the air for five minutes and to make a closed flight at low altitude. Some of the topics discussed include stabilization, horizontal flight, and directional control.
Date: April 1923
Creator: Oemichen, Etienne
Partner: UNT Libraries Government Documents Department
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New Albatross Commercial Airplane "L 58"

Description: The "L 58" is a monoplane with cantilever wings joined directly to the fuselage. It accordingly belongs to the new school of airplane construction, as founded and developed in Germany. A list of performance characteristics is included.
Date: March 1923
Creator: Meyer, G.
Partner: UNT Libraries Government Documents Department
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The New Interpretation of the Laws of Air Resistance

Description: A closer examination of Newton's formula for air resistance shows that it is well to consider the air as an ordinary fluid, and, indeed for most of the velocities considered, as a non-compressible fluid, so long as the dimensions of the moving body are large in comparison with the mean free path of the particles of air.
Date: April 1923
Creator: Prandtl, L.
Partner: UNT Libraries Government Documents Department
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Shortening the Landing Run

Description: Methods for shortening the landing run are discussed as well as the need for more emergency landing fields that will, by necessity, have to be short fields.
Date: October 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Lessons of the 1922 Rhön Soaring Flights

Description: Innovations in design and technique from the Rhön soaring contest are presented in this report.
Date: February 1923
Creator: Prandtl, L.
Partner: UNT Libraries Government Documents Department
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Factors of Safety

Description: Factors of safety serve three purposes: provides against trouble arising from unexpectedly large loads, allows for imperfections of workmanship, represents a depreciation allowance. A consideration of these safety factors is provided in this report.
Date: December 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Rigid Airships

Description: Memorandum presenting the history and development of airships. Tables containing information and statistics regarding some of the current airships are provided.
Date: November 1923
Creator: Stahl, Friedrich
Partner: UNT Libraries Government Documents Department
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