Resource Type
Partner
Collection
Technical Report Archive and Image Library
212
National Advisory Committee for Aeronautics Collection
158
American Indians Archive Collection
1
Boy and Girl Scout Annual Reports
1
Harris and Eliza Kempner
1
Oklahoma Historical Society Manuscript Collection
1
Stillwater History Museum at the Sheerar, Stillwater, Oklahoma
1
Serial/Series Title
NACA Technical Memorandums
53
NACA Technical Notes
44
United States Bureau of Mines Reports
35
NACA Technical Reports
34
NACA Aircraft Circulars
23
Report of investigations (United States. Bureau of Mines)
11
United States Geological Survey Reports
11
Coal-Mine Fatalities
8
U.S. Geological Survey professional paper
8
Shorter contributions to general geology
6
22 More
States
Results:
1 - 24 of
216
next
Limits of Inflammability of Gases and Vapors
From Definitions: "It is the object of this paper to present the results of a critical review of all figures published on the limits of inflammability of combustible gases and vapors when in admixture with air, oxygen, or other "atmosphere." Suspended dusts and liquid mists are not considered."
Date:
1931
Creator:
Coward, H. F. & Jones, G. W.
System:
The UNT Digital Library
Laboratory Testing of the Inflammability of Coal and other Dusts Conducted by the Bureau of Mines
From Introduction: "This paper endeavors to collect and describe all of the work in proper order, as briefly as is consistent with a good understanding thereof, and attempts to evaluate it in the light of present-day knowledge derived from large and small scale experiments in the United States and foreign countries."
Date:
October 1931
Creator:
Greenwald, H. P.
System:
The UNT Digital Library
Gases that Occur in Metal Mines
From Conclusions: "Many gases are harmful to man are widely prevalent in metal mines. They influence the safety, health and efficiency of miners; workers and officials should therefore become much more familiar with there occurrence, detection, and handling. The principal means of combating these gases are proper ventilation of all parts of a mine and the adoption of measures to minimize fire hazards and to control a mine fire promptly should it occur."
Date:
1931
Creator:
Harrington, D. & Denny, E. H.
System:
The UNT Digital Library
Coal-Mine Fatalities in the United States, 1929
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:
1931
Creator:
Adams, William W.
System:
The UNT Digital Library
Metal-Mine Accidents in the United States During the Calendar Year 1929
Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date:
1931
Creator:
Adams, William W.
System:
The UNT Digital Library
Permissible Coal-Handling Equipment: Approved from January, 1926, to December, 1930, Inclusive
From Description of Permissible Loaders and Conveyors: "The following descriptions of permissible loading machines and conveyors now included in the bureau's list of approved equipment are given to indicate to mine operators not only the types available but also show to some extent the special features employed in designing machines that minimize the hazard of gas and dust ignitions. Furthermore, the authors hope that the descriptions will have some value to manufactures who may contemplate entering this field of special design."
Date:
1931
Creator:
Ilsley, L. C.; Gleim, E. J. & Brunot, H. B.
System:
The UNT Digital Library
Methods and Apparatus Used in Determining the Gas, Coke, and By-Product Making Properties of American Coals: with Results on a Taggart-Bed Coal from Roda, Wise County, Virginia
From Introduction: "The results of this preliminary investigation, which were reported to the association at the 1928 convention, indicated, first, that fundamental information on the mechanism of carbonization throughout the entire range from low to high temperature coking is desired and, second, that a uniform basis upon which to compare the carbonizing properties of different coals should be developed."
Date:
1931
Creator:
Fieldner, A. C.; Davis, J. D.; Thiessen, R.; Kester, E. B. & Selvig, W. A.
System:
The UNT Digital Library
Concrete Stoppings in Coal Mines for Resisting Explosions: Detailed Tests of Typical Stoppings and Strength of Coal as a Buttress
From Forward: "This paper gives the details of tests to determine the design of stoppings capable of withstanding a pressure, applied to either side, of 50 pounds per square inch, as required by section 104 (a) of the Operating Regulations to Govern Coal-Mining Methods on Leased Lands on the Public Domain, issued in 1921 and quoted on page 3."
Date:
1931
Creator:
Rice, George S.; Greenwald, H. P.; Howarth, H. C. & Avins, S.
System:
The UNT Digital Library
Physical Testing of Explosives at the Bureau of Mines Explosives Experiment Station, Bruceton, Pennsylvania
From Introduction: "The methods of making the physical tests of explosives recorded here are based upon the results of more than 20 years of experience of the staff of the explosives division of the Bureau of Mines at the Pittsburgh testing station and at its successor, the Explosives Experiment Station, Bruceton, Pa. The methods are described in unusual detail to permit repetition that will duplicate, as nearly as possible, the precise manner in which they have been performed in the past and to reduce differences in technique to a minimum."
Date:
1931
Creator:
Munroe, Charles E. & Tiffany, J. E.
System:
The UNT Digital Library
Quicksilver
From Introduction: "Material for this report was gathered during the last quarter of 1928 and the first quarter of 1929, when the author visited the quick-silver-producing districts of California, Nevada, Texas, Oregon, Washington and Arizona to view the progress made in recent years and gather material for a comprehensive study of the present-day quicksilver industry of the United States."
Date:
1931
Creator:
Schuette, C. N.
System:
The UNT Digital Library
Agglutinating, Coking, and By-Product Tests of Coals From Pierce County, Washington
Report discussing testing of coals in Pierce County, Washington. The investigation had three parts: a geological survey of the coal property, washing and crushing tests of the coals, and coking and by-product tests.
Date:
1931
Creator:
Marshall, S. M. & Bird, B. M.
System:
The UNT Digital Library
Jigging, Classification, Tabling, and Flotation Tests of Coals Presenting Difficult Washing Problems, with Particular Reference to Coals from Pierce County, Washington
From Content and Arrangement of Report: "For the convenience of the reader the bulletin has been divided into two parts. Part I describes the investigation and summarizes the most important results. Part II gives the detailed data of the best of the washing tests by each process."
Date:
1931
Creator:
Bird, B. M. & Marshall, S. M.
System:
The UNT Digital Library
Quarry Accidents in the United States During the Calendar Year 1929
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:
1931
Creator:
Adams, William W.
System:
The UNT Digital Library
Petroleum Refinery Statistics: 1929
Report discussing petroleum refinery statistics for 1929.
Date:
1931
Creator:
Hopkins, G. R.
System:
The UNT Digital Library
Relationship Between Oxidizability and Composition of Coal
From Introduction: "Measurement of these differences serve to define completely the chemical nature of coal and is possible as a result of the observations contained in the report." From Scope of Investigation: "The authors have endeavored to test the truth of these observations by a study of a series of coals of widely different rank, and the present report deals with the results of this investigation."
Date:
1931
Creator:
Francis, Wilfrid & Morris, H. M.
System:
The UNT Digital Library
Explosives Accidents in the Anthracite Mines of Pennsylvania: 1923-1927
From Basis and Purpose of Report: "This report constitutes a large-size sample of these causes as taken from the Pennsylvania Department of Mine records. This report should therefore be a valuable experience record for all those who seek to prevent accidents with explosives, especially to all users of explosives."
Date:
1931
Creator:
Howell, S. P.
System:
The UNT Digital Library
A Study of Refractories Service Conditions in Boiler Furnaces
From Scope of Report: "The findings of the preliminary survey are first briefly presented; these are followed by a general description of the furnaces and fuels investigated. A chapter follows on each of the four conditions of service studied: (1) The temperature and composition of the furnace gases, (2) the velocity of the furnace gases, (3) the temperature of the refractories, and (4) the composition and characteristics of boiler-furnace slags. In each chapter the significance of the condition of service, the factors that govern it, the method of investigation, representative data from the installations, and a comparative summary are given."
Date:
1931
Creator:
Sherman, Ralph A.
System:
The UNT Digital Library
United States Earthquakes, 1929
Report discussing earthquake activity in the United States during 1929. The report is broken down by regions and has sections for specific earthquakes.
Date:
1931
Creator:
Heck, N. H. & Bodle, R. R.
System:
The UNT Digital Library
The Oehmichen Peugeot Helicopter
The first flights of the Oehmichen helicopter are detailed as well as various aspects of the construction.
Date:
March 1931
Creator:
unknown
System:
The UNT Digital Library
Basic Requirements of Fuel-Injection Nozzles for Quiescent Combustion Chambers
This report presents test results obtained during an investigation of the performance of a single-cylinder, high-speed, compression-ignition test engine when using multiple-orifice fuel-injection valve nozzles in which the number and the direction of the orifices were varied independently.
Date:
June 1931
Creator:
Spanogle, J. A. & Foster, H. H.
System:
The UNT Digital Library
Metal-Truss Wing Spars
The purpose of the study was to develop improvements in the current methods for the calculation of the loads in members of metal truss wing spars which are subjected to combined bending and compression. The theory developed here has two important practical applications. One is the calculation of the effective moment of inertia of a truss spar from the geometry of the spar and the loads to which the spar is to be subjected. The second is the determination of the most economical location of metal for stiffening a truss spar which has too much deflection.
Date:
July 1931
Creator:
Swickard, Andrew E.
System:
The UNT Digital Library
The Effect of Injection-Valve Opening Pressure on Spray-Tip Penetration
"The effect of various injection-valve opening pressures on the spray-tip penetration was determined for several injection pressure. A common-rail fuel injection system was used. For a given injection pressure a maximum rate of penetration was obtained with an injection-valve opening pressure equal to the injection pressure" (p. 1).
Date:
July 1931
Creator:
Rothrock, A. M. & Marsh, E. T.
System:
The UNT Digital Library
Tests of Six Symmetrical Airfoils in the Variable Density Wind Tunnel
"This paper is the first of a series covering an investigation of a family of airfoils all formed from a basic profile. It gives in preliminary form the results of six symmetrical airfoils, differing only in maximum thickness. The maximum thickness-to-chord ratios are 0.06, 0.09, 0.12, 0.15, 0.18, and 0.21" (p. 1).
Date:
July 1931
Creator:
Jacobs, Eastman N.
System:
The UNT Digital Library
Effect of Nose Shape on the Characteristics of Symmetrical Airfoils
Tests of nine symmetrical airfoils, having different leading-edge radii, were made in the variable density wind tunnel. Three symmetrical NACA airfoils having maximum thickness-to-chord ratio of 0.06, 0.012, and 0.018 were used as basic (or normal) sections; and for each of these thicknesses one thinner and one blunter nose section were developed. Although the slope of the lift curve varies with thickness, these tests show that for any given thickness the slope is independent of nose radius.
Date:
August 1931
Creator:
Pinkerton, Robert M.
System:
The UNT Digital Library