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Present Status of Aircraft Instruments (open access)

Present Status of Aircraft Instruments

This report gives a brief description of the present state of development and of the performance characteristics of instruments included in the following group: speed instruments, altitude instruments, navigation instruments, power-plant instruments, oxygen instruments, instruments for aerial photography, fog-flying instruments, general problems, summary of instrument and research problems. The items considered under performance include sensitivity, scale errors, effects of temperature and pressure, effects of acceleration and vibration, time lag, damping, leaks, elastic defects, and friction.
Date: October 9, 1930
Creator: Subcommittee on Instruments
Object Type: Report
System: The UNT Digital Library
Aircraft Woods: Their Properties, Selection, and Characteristics (open access)

Aircraft Woods: Their Properties, Selection, and Characteristics

From Summary: "This report presents, further, information on the properties of various other native species of wood compared with spruce, and discusses the characteristics of a considerable number of them from the standpoint of their possible application in aircraft manufacture to supplement the woods that are now most commonly used."
Date: January 1, 1930
Creator: Markwardt, L. J.
Object Type: Report
System: The UNT Digital Library
Strength of Welded Joints in Tubular Members for Aircraft (open access)

Strength of Welded Joints in Tubular Members for Aircraft

"The object of this investigation is to make available to the aircraft industry authoritative information on the strength, weight, and cost of a number of types of welded joints. This information will, also, assist the aeronautics branch in its work of licensing planes by providing data from which the strength of a given joint may be estimated. As very little material on the strength of aircraft welds has been published, it is believed that such tests made by a disinterested governmental laboratory should be of considerable value to the aircraft industry" (p. 323).
Date: February 6, 1930
Creator: Whittemore, H. L. & Brueggeman, W. C.
Object Type: Report
System: The UNT Digital Library
Potash Bibliography to 1928 (Annotated): Review and Compilation of Technical Literature on Potash Salts (including the Alunites) and Their Foreign Occurrences (open access)

Potash Bibliography to 1928 (Annotated): Review and Compilation of Technical Literature on Potash Salts (including the Alunites) and Their Foreign Occurrences

From Scope and Arrangement of Review: "This review is confined to the technical literature of the origin, history, and foreign occurrences of saline potassium minerals, their mining, description, treatment, and physical-chemical relations. The literature on alunite, jarosite, and related minerals has also been included. The literature on potash minerals associated with the nitrate deposits and on the silicate minerals has been omitted as well as that on analytical methods, statistics, political economy, and the very large field of patent literature. The material in this review is arranged chronologically and alphabetically according to the authors within each year."
Date: 1930
Creator: Berliner, J. F. T.
Object Type: Report
System: The UNT Digital Library
Gas-Lift Method of Flowing Oil Wells: (California Practice) (open access)

Gas-Lift Method of Flowing Oil Wells: (California Practice)

From Introduction: "In this report the author has presented data of actual gas-lift operations in the oil fields of California. Wherever theoretical hypotheses and conclusions are given an attempt has been made to support them by field data gathered during consultation with engineers and operators. The impossibility of drawing conclusions that will apply to all wells or even to one well throughout its life is appreciated by everyone who has studied the subject, and the reader is cautioned not to accept all the data presented as being applicable to every well."
Date: 1930
Creator: Miller, H. C.
Object Type: Report
System: The UNT Digital Library
Construction and Operation of the Bureau of Mines Experimental Oil-Shale Plant, 1925-1927 (open access)

Construction and Operation of the Bureau of Mines Experimental Oil-Shale Plant, 1925-1927

Report describing the construction of the Bureau of Mines experimental oil-shale plant at Rulison, CO, during 1925 and 1926, its operation, and the results obtained from refinery studies of the oil produced.
Date: 1930
Creator: Gavin, Martin J. & Desmond, John S.
Object Type: Report
System: The UNT Digital Library
Innovations in Copper Leaching Employing Ferric Sulphate-Sulphuric Acid (open access)

Innovations in Copper Leaching Employing Ferric Sulphate-Sulphuric Acid

From Introduction: "The Bureau of Mines has attempted to develop a cheap and efficient solvent that would especially meet the requirements of smaller plants. (See Bibliography). A method of producing this solution from sulphurous products and waste liquors was developed by the bureau and tried successfully on a test-plant scale at the Southwest Experiment Station in cooperation with the department of mining and metallurgy, University of Arizona, Tuscon, Ariz."
Date: 1930
Creator: Keyes, Harmon E.
Object Type: Report
System: The UNT Digital Library
Effect of Vacuum on Oil Wells (open access)

Effect of Vacuum on Oil Wells

From Introduction: "Because of the above reasons, because there is a dearth of published information relating to the effect of vacuum oil wells, and because misapplication of vacuum may result in a greatly decreased ultimate recovery of oil, whereas the correct application may have the opposite effect, the Bureau of Mines has authorized this investigation."
Date: 1930
Creator: Lindsly, Ben E. & Berwald, W. B.
Object Type: Report
System: The UNT Digital Library
Engineering Study of the Seminole Area, Seminole and Pottawatomie Counties, Oklahoma (open access)

Engineering Study of the Seminole Area, Seminole and Pottawatomie Counties, Oklahoma

Report issued by the Bureau of Mines over engineering studies conducted on Oklahoma oil fields. The results of the studies are presented and discussed. This report includes tables, illustrations, and photographs.
Date: May 1930
Creator: Brandenthaler, R. R.; Morris, W. S. & Bopp, C. R.
Object Type: Report
System: The UNT Digital Library
Rock-Strata Gases of the Cripple Creek District, Colorado and Their Effect on Mining (open access)

Rock-Strata Gases of the Cripple Creek District, Colorado and Their Effect on Mining

From Introduction: "The presence in the Cripple Creek district, Colo., of irrespirable gas or gases, generally known to consist mainly of nitrogen and carbon dioxide, has been recognized by members of the mining industry in that region almost since underground mining was begun there; the occurrence origin, and possible control of these gases have been discussed in several articles cited at various places in this report. Similar gases have also been studied in other metal-mining districts, as later discussed."
Date: 1930
Creator: Denny, E. H.; Marshall, K. L.; Fieldner, A. C.; Emery, A. H.; Yant, W. P. & Selvig, W. A.
Object Type: Report
System: The UNT Digital Library
Lithologic Studies of Fine-Grained Upper Cretaceous Sedimentary Rocks of the Black Hills Region (open access)

Lithologic Studies of Fine-Grained Upper Cretaceous Sedimentary Rocks of the Black Hills Region

More than nine-tenths of the Upper Cretaceous rocks in northeastern Wyoming are fine-grained shales, mudstones, and calcareous marls. A comparative study of the mineralogy, chemical and mechanical composition, density and porosity, fissility, and lamination of samples of these rocks discloses several relations that throw light on the geologic history and structural deformation of the region, and perhaps on its oil and gas possibilities.
Date: 1930
Creator: Rubey, William Walden
Object Type: Report
System: The UNT Digital Library
Shorter Contributions to General Geology, 1929 (open access)

Shorter Contributions to General Geology, 1929

From introduction: This report describes the deposits of analcite in the Green River formation, to compare them with other similar deposits, and to present them with other similar deposits, and to present the observations and inferences that led him to explain them as alteration products of volcanic ash that fell into an ancient saline lake. The report also records the occurrence of several thin beds of sepiolite, or meerschaum, in the Green River formation and presents new data on the molds of saline minerals of the Green River formation whose determination affects directly the interpretation of the analcite and sepiolite deposits.
Date: 1930
Creator: Mendenhall, W. C.
Object Type: Report
System: The UNT Digital Library
Scouting, Volume 18, Number 11, November 1930 (open access)

Scouting, Volume 18, Number 11, November 1930

Monthly publication of the Boy Scouts of America, written for Boy Scout leaders, officials, and others interested in the work of the Scouts. It includes articles about events and activities, updates from the national headquarters, topical columns and essays, and news from various chapters nationwide. Index appears on page 306.
Date: November 1930
Creator: Boy Scouts of America
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Catalogue of Howard Payne College, 1929-1930 (open access)

Catalogue of Howard Payne College, 1929-1930

Catalogue describes the history, governance, admission requirements, course offerings, and campus life of Howard Payne College in Brownwood, Texas.
Date: June 1930
Creator: Howard Payne College (Brownwood, Tex.)
Object Type: Book
System: The Portal to Texas History
Sand Springs Leader (Sand Springs, Okla.), Vol. 18, No. 12, Ed. 1 Friday, August 29, 1930 (open access)

Sand Springs Leader (Sand Springs, Okla.), Vol. 18, No. 12, Ed. 1 Friday, August 29, 1930

Weekly newspaper from Sand Springs, Oklahoma that includes local, state, and national news along with advertising.
Date: August 29, 1930
Creator: Engle, C. L.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Scouting, Volume 18, Number 2, February 1930 (open access)

Scouting, Volume 18, Number 2, February 1930

Monthly publication of the Boy Scouts of America, written for Boy Scout leaders, officials, and others interested in the work of the Scouts. It includes articles about events and activities, updates from the national headquarters, topical columns and essays, and news from various chapters nationwide. Index appears on page 54.
Date: February 1930
Creator: Boy Scouts of America
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Humble Bee (Baytown, Tex.), Vol. 07, No. 15, Ed. 1 Thursday, February 6, 1930 (open access)

Humble Bee (Baytown, Tex.), Vol. 07, No. 15, Ed. 1 Thursday, February 6, 1930

Semimonthly newspaper from Baytown, Texas published by the Humble Oil and Refining Company that includes news and information of interest to their Baytown plant employees.
Date: February 6, 1930
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Scouting, Volume 18, Number 12, December 1930 (open access)

Scouting, Volume 18, Number 12, December 1930

Monthly publication of the Boy Scouts of America, written for Boy Scout leaders, officials, and others interested in the work of the Scouts. It includes articles about events and activities, updates from the national headquarters, topical columns and essays, and news from various chapters nationwide. Index appears on page 338.
Date: December 1930
Creator: Boy Scouts of America
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
The Evening Derrick (Drumright, Okla.), Vol. 16, No. 221, Ed. 1 Thursday, February 6, 1930 (open access)

The Evening Derrick (Drumright, Okla.), Vol. 16, No. 221, Ed. 1 Thursday, February 6, 1930

Daily newspaper from Drumright, Oklahoma that includes local, state, and national news along with advertising.
Date: February 6, 1930
Creator: Allard, Lou S.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Evening Derrick (Drumright, Okla.), Vol. 16, No. 221, Ed. 1 Thursday, February 6, 1930 (open access)

The Evening Derrick (Drumright, Okla.), Vol. 16, No. 221, Ed. 1 Thursday, February 6, 1930

Daily newspaper from Drumright, Oklahoma that includes local, state, and national news along with advertising.
Date: February 6, 1930
Creator: Allard, Lou S.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Scouting, Volume 18, Number 1, January 1930 (open access)

Scouting, Volume 18, Number 1, January 1930

Monthly publication of the Boy Scouts of America, written for Boy Scout leaders, officials, and others interested in the work of the Scouts. It includes articles about events and activities, updates from the national headquarters, topical columns and essays, and news from various chapters nationwide. Index appears on page 30.
Date: January 1930
Creator: Boy Scouts of America
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Sooner State Press (Norman, Okla.), Vol. 22, No. 46, Ed. 1 Saturday, August 2, 1930 (open access)

Sooner State Press (Norman, Okla.), Vol. 22, No. 46, Ed. 1 Saturday, August 2, 1930

Weekly newspaper from the School of Journalism of the University of Oklahoma in Norman, Oklahoma "published in the interest of the newspaper editors and publishers of the state" that includes industry and campus news.
Date: August 2, 1930
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
Scouting, Volume 18, Number 9, September 1930 (open access)

Scouting, Volume 18, Number 9, September 1930

Monthly publication of the Boy Scouts of America, written for Boy Scout leaders, officials, and others interested in the work of the Scouts. It includes articles about events and activities, updates from the national headquarters, topical columns and essays, and news from various chapters nationwide. Index appears on page 250.
Date: September 1930
Creator: Boy Scouts of America
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Humble Bee (Baytown, Tex.), Vol. 07, No. 23, Ed. 1 Wednesday, June 11, 1930 (open access)

Humble Bee (Baytown, Tex.), Vol. 07, No. 23, Ed. 1 Wednesday, June 11, 1930

Semimonthly newspaper from Baytown, Texas published by the Humble Oil and Refining Company that includes news and information of interest to their Baytown plant employees.
Date: June 11, 1930
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History