Resource Type
Collection
Serial/Series Title
NACA Technical Memorandums
52
United States Bureau of Mines Reports
31
NACA Technical Notes
29
NACA Technical Reports
23
NACA Aircraft Circulars
19
Bulletin (United States. Bureau of Mines)
6
Economic paper (Bureau of Mines)
3
Information circular (United States. Bureau of Mines)
3
Technical paper (United States. Bureau of Mines)
3
United States Geological Survey Reports
3
13 More
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States
164 Matching Results
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Coal-Mine Ventilation Factors
Report discussing results from investigations of coal mining ventilation and discussing problems of ventilation in coal mining.
Date:
1929
Creator:
Greenwald, H. P. & McElroy, G. E.
System:
The UNT Digital Library
Bibliography of Petroleum and Allied Substances, 1922 and 1923
From Introduction: "This bulletin is the seventh in this series of petroleum bibliographies published by the Bureau of Mines, Bulletins 149, 165, 180, 189, 216, and 220 being complications for the years 1915, 1916, 1917, 1918, 1919-20, and 1921, respectively. In this bulletin the same general plan of classification of references has been followed, but several additions have been made."
Date:
1929
Creator:
Britton, H.
System:
The UNT Digital Library
Tests of Strength of Roof Supports Used in Anthracite Mines of Pennsylvania
From Introduction: "The report that follows gives the results to determine the comprehensive strength of artificial roof supports of various kinds used in the mining of anthracite in Pennsylvania."
Date:
1929
Creator:
United States. Bureau of Mines.
System:
The UNT Digital Library
Ochers and Mineral Pigments of the Pacific Northwest : Occurrence, Possible Methods of Preparation, and Testing of Ochers, Siennas, and Colored Clays
From Introduction: "A review is given of the nomenclature, sources, imports, statistics, common methods of preparation, and testing of mineral pigments. A description of the Deer Park-Spokane colored-clay district and the laboratory methods of preparation of these colored clays, ochers, and siennas follows. The following report is merely preliminary in nature, only three months during the summer of 1927 being devoted to the laboratory investigation."
Date:
1929
Creator:
Wilson, Hewitt
System:
The UNT Digital Library
Inspection and Testing of Mine-Type Electrical Equipment for Permissibility
From Introduction: "This publication, therefore, proposes to discuss the theory upon which tests of equipment in explosive atmospheres are based and to consider inspection and other matters pertaining to complete investigations of machines under Schedules 2B and 15."
Date:
1929
Creator:
United States. Bureau of Mines.
System:
The UNT Digital Library
Mining Methods and Practice in the Michigan Copper Mines
From Introduction: "The mining methods described and discussed in this report have been considered historically-that is, from early to present practice. The data for this report were collected during 1927."
Date:
1929
Creator:
Crane, W. R.
System:
The UNT Digital Library
Methods, Costs, and Safety in Stripping and Mining Coal, Copper Ore, Iron Ore, Bauxite, and Pebble Phosphate
From Extent of Open-Pit Mining and Purpose of this Publication: "Various methods and machines are employed, and costs are low; in fact, costs have to be low because coal and ores command a low price on the market. These factors, together with queries on methods and costs of stripping and the increase in open-pit mining, have justified investigation by the Bureau of Mines for this form of mining and publication of the results in this report."
Date:
1929
Creator:
United States. Bureau of Mines.
System:
The UNT Digital Library
Oxides in Pig Iron: Their Origin and Action in the Steel-Making Process
From Introduction: "In summarizing the evidence in the literature it is apparent that there is general agreement among furnace men on the existence of so-called "bad-iron." It is also evident that the existence of dissolved or occluded gases is not an explanation. The presence of suspended oxides has been proved, and at least one plausible explanation for their formation has been given."
Date:
1929
Creator:
Herty, C. H., Jr. & Gaines, J. M., Jr.
System:
The UNT Digital Library
Rock Bursts in the Lake Superior Copper Mines, Keweenaw Point, Michigan
From Introduction: "The effect of rock pressure may be general and continuous disintegration and reduction in size of pillars of ore and rock left for the support of the workings, resulting in the collapse of hanging wall and the closing of stopes, drifts, and shafts, or the action may be sudden and violent and aside from seriously affecting the workings may present a real hazard to the operation of mines. The object in the preparation of this report is to add to the accumulated information and from the facts presented to make suggestions for protective measures to be taken when possible."
Date:
1929
Creator:
Crane, W. R.
System:
The UNT Digital Library
Metal-Mine Accidents in the United States During the Calendar Year 1927
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:
1929
Creator:
Adams, William W.
System:
The UNT Digital Library
Drilling and Blasting in Metal-Mine Drifts and Crosscuts
From Introduction: "This report shows the results obtained and conclusions drawn from observing the blasting of 108 rounds at 13 mines in six different States. Kinds of rock drills, drill steel, and forms of drill bits are not considered."
Date:
1929
Creator:
Gardner, E. D.
System:
The UNT Digital Library
Bauxite: Float-and-Sink Fractionations and Flotation Experiments
From Introduction: "This report presents the results of an investigation of the physical properties and characteristics of bauxite, with special reference to the possibility of applying commercial methods of concentration to low-grade bauxite."
Date:
1929
Creator:
Gandrud, B. W. & De Vaney, Fred D.
System:
The UNT Digital Library
Permissible Storage - Battery Locomotives and Power Trucks
From Introduction: "The purpose of this paper is therefore to give essential data in regard to the construction of approved storage-battery locomotives and power trucks."
Date:
1929
Creator:
Ilsley, L. C.; Gleim, E. J. & Brunot, H. B.
System:
The UNT Digital Library
Quarry Accidents in the United States During the Calendar Year 1927
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:
1929
Creator:
Adams, William W.
System:
The UNT Digital Library
Metallurgical Limestone: Problems in Production and Utilization
From Introduction: "The purpose of this report is to cover as completely as possible our present knowledge of the utilization of metallurgical stone and the problems connected with its quarrying or mining and preparation."
Date:
1929
Creator:
United States. Bureau of Mines.
System:
The UNT Digital Library
Coal-Washing Investigations: Methods and Tests
From Introduction: "The investigations described in this bulletin are confined to a study of the washing characteristics of bituminous coals. The washing characteristics of coals from many of the most important coal-producing fields of the Eastern and Central States were examined."
Date:
1929
Creator:
Yancey, H. F. & Fraser, Thomas
System:
The UNT Digital Library
Fuel-Efficiency Tests on Batch Oil Stills
From Introduction Need for Tests: "This bulletin presents in condensed form the results of these tests and the deductions made from them. The tests were made at two refineries, designated here at plant 1 and plant 2."
Date:
1929
Creator:
Kreisinger, Henry; Argyle, W. R. & Rice, W. E.
System:
The UNT Digital Library
Summarized Data of Gold Production
Report presenting data on gold production around the world, with specific focus on the gold production the United States.
Date:
1929
Creator:
Ridgway, Robert Henderson
System:
The UNT Digital Library
Summarized Data of Zinc Production Showing the Relation of Production in the United States to That of the World
Report presenting summarized data of zinc production, both in the United States and around the world.
Date:
1929
Creator:
Pehrson, Elmer Walter
System:
The UNT Digital Library
Summarized Data of Lead Production Showing the Relation of Production in the United States to That of the World
Report presenting information on the production of lead since 1800.
Date:
1929
Creator:
Smith, Lewis Anderson
System:
The UNT Digital Library
The Drag and Interference of a Nacelle in the Presence of a Wing
A wing interference investigation was conducted to determine why the N.A.C.A. cowling did not yield the expected increase in speed when adapted to the outboard nacelles of trimotored airplanes. The results indicate that the drag and interference of the engine nacelle with the cowling, when combined with a thick wing, can be reduced from its value as originally applied by changing its position and fairing it into the wing.
Date:
October 1929
Creator:
Jacobs, Eastman N.
System:
The UNT Digital Library
The Impact on Seaplane Floats During Landing
"In order to make a stress analysis of seaplane floats, and especially of the members connecting the floats with the fuselage, it is of great importance to determine the maximum pressure acting on the floats during landing. Here, the author gives a formula for maximum pressures during landing that permits one to apply experimental results to different bodies and different velocities. The author notes that the formula checks very well with experimental results" (p. 1).
Date:
October 1929
Creator:
von Karman, T.
System:
The UNT Digital Library
The effect of the wings of single engine airplanes on propulsive efficiency as shown by full scale wind tunnel tests
An investigation was conducted to determine the effect of the wings on propulsive efficiency. The wings are shown to cause a reduction of 1 percent to 3 percent in propulsive efficiency, which is about the same for monoplane as well as biplane wings.
Date:
October 1929
Creator:
Weick, Fred E. & Wood, Donald H.
System:
The UNT Digital Library
Spiral Tendency in Blind Flying
"The flight path followed by an airplane which was being flown by a blindfolded pilot was observed and recorded. When the pilot attempted to make a straight-away flight there was a tendency to deviate from the straight path and to take up a spiral one" (p. 1).
Date:
August 1929
Creator:
Carroll, Thomas & McAvoy, William H.
System:
The UNT Digital Library