Technical Report Archive & Image Library (TRAIL) - 12,467 Matching Results

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[Illustrations: Buried Valley of the Susquehanna River: Anthracite Region of Pennsylvania]

Description: Illustrations that accompany a report issued by the U.S. Bureau of Mines regarding a buried valley area (a deposit of clay, sand, and gravel) around the Susquehanna River in the anthracite region of Pennsylvania, near the city of Wilkes-Barre. Most of the images are cross sections of the area.
Date: 1950~
Item Type: Refine your search to only Map
Partner: UNT Libraries Government Documents Department
open access

Information on the Prevention of Quarry Accidents

Description: From Introduction: "The primary objective of this paper is to discuss the hazards and furnish a list of recommendations for the safe operation of the quarries and related works. The second objective is to describe and illustrate safety devices, practices, and quarrying methods."
Date: 1950
Creator: Harrington, D.; Worcester, A. W. & East, J. H., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Inundated Anthracite Reserves: Eastern Middle Field of Pennsylvania

Description: From Scope of Report: "In this report one major unwatering project was developed. Three pools that inundate considerable tonnages of anthracite reserves are close enough together to be unwatered by some centralized system. Three alternative plans were studied to estimate the cost of each."
Date: 1950
Creator: Ash, S. H. (Simon Harry), b. 1889; Kynor, H. D.; Fatzinger, R. W.; Davies, B. S. & Gilbert, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of a NACA high-speed strain-gage torquemeter

Description: Report presenting an investigation of a strain-gage torquemeter employing a circuit to minimize effects of contact resistance, which was evaluated under static and dynamic conditions. Effects of temperature, axial stress, slip-ring contact resistance, and speed on the operation of the torquemeter were investigated. Results regarding the torsion-shaft static calibration, axial-stress effects, and dynamic operation are provided.
Date: January 1950
Creator: Rebeske, John J., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Investigation of the Longitudinal Characteristics of the MX-656 Configuration Using Rocket-Propelled Models Preliminary Results at Mach Numbers from 0.65 to 1.25

Description: "A rocket-propelled model of the MX-656 configuration has been flown through the Mach number range from 0.65 to 1.25. An analysis of the response of the model to rapid deflections of the horizontal tail gave information on the lift, drag, longitudinal stability and control, and longitudinal-trim change. The lift-coefficient range covered by the test was from -0.2 to 0,3 throughout most of the Mach number range" (p. 1).
Date: 1950
Creator: Mitchell, Jesse L. & Peck, Robert F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Isosynthesis

Description: From Preface: "The paper contains data on the development of the catalyst for the isosynthesis, on the effect of temperature and pressure of operation, and on the composition of the products of the reaction. In the last section, experimental evidence and speculations concerning the mechanisms of the isosynthesis are discussed."
Date: 1950
Creator: Pichler, Helmut & Ziesecke, Karl-Heinz
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Linearized Supersonic Theory of Conical Wings

Description: Report presenting the theory of conical flow and its application to conical aircraft wings. Following an explanation of the theory, several types of wings are analyzed and compared with each other.
Date: January 1950
Creator: Lagerstrom, P. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The load distribution due to sideslip on triangular, trapezoidal, and related plan forms in supersonic flow

Description: "Expressions are presented for the load distribution on a representative group of plan forms in sideslip at supersonic speeds. These expressions were obtained by the application of lifting-surface theories based on the linearized equation for compressible flow. Sketches of the load distributions are included" (p. 1).
Date: January 1950
Creator: Jones, Arthur L. & Alksne, Alberta
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Magnesite Deposits of Central Ceará, Brazil

Description: From introduction: The purpose of this study was to investigate the quantity and quality of [Central Ceara, Brazil] magnesite, and the writer concludes that this group of deposits constitutes one of the major reserves of high-grade magnesite in the Western Hemisphere. The ore could be used in the production of any commercial grade of magnesia with little or no beneficiation. Soil and alluvial overburden is thin between widespread outcrops, so all the deposits could be mined from open pits.
Date: 1950
Creator: Bodenlos, Alfred J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Magnetic Surveys in the Iron Springs District: Iron County, Utah

Description: Report issued by the Bureau of Mines over magnetometer surveys conducted on iron deposits in Utah. Details of the deposits included in the survey are listed. The methods of testing each deposit are also presented. This report includes tables, maps, photographs, and illustrations.
Date: January 1950
Creator: Cook, Kenneth L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Method for determining the frequency-response characteristics of an element or system from the system transient output response to a known input function

Description: "A method is presented for the determination of the frequency-response characteristics of an element or system by utilizing the transient output response to a known but arbitrary input to the system. Since the application of special inputs, such as step functions or sinusoids, is often imperfect or impractical, a method for utilizing arbitrary inputs is desirable. Simple flight-test data may be reduced by this method to give the frequency response of an aircraft" (p. 1).
Date: 1950
Creator: Curfman, Howard J., Jr. & Gardiner, Robert A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mining Methods and Practices at the Iron King Mine, Shattuck-Denn Mining Corporation, Yavapai County, Arizona

Description: Report issued by the U.S. Bureau of Mines discussing mining methods in Arizona mines. As stated in the introduction, "this paper describes mining operations at the Iron King mine of the Shattuck-Denn Mining Corp. in Yavapai County, Ariz." (p. 2). This report includes tables, maps, illustrations, and photographs.
Date: January 1950
Creator: Kumke, Charles A. & Mille, H. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mound Laboratory Report for Biological Research: June-September 1951

Description: A report about the effects of repeated polonium injections which have been under investigation by this laboratory to provide background information for future experiments and to provide experimental conditions that more closely simulate working hazards.
Date: 1950/1951
Creator: Davis, R. K. & Rockhold, W. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

National Bureau of Standards Progress Report to the Atomic Energy Commission: July 1, 1950 to September 30, 1950

Description: Report discussing the progress made on a research project during the period from July 1, 1950 to September 30, 1950. The objective of the research project was to develop a Zamboni type pile suitable for the requirements of the equipment in the National Bureau of Standards laboratories.
Date: 1950~
Creator: United States. National Bureau of Standards.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Report of the Thirty-Fifth National Conference on Weights and Measures, 1950

Description: Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date: 1950
Creator: United States. National Bureau of Standards.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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