A Study of the Current Transformer with Particular Reference to Iron Loss (open access)

A Study of the Current Transformer with Particular Reference to Iron Loss

Report issued by the Bureau of Standards over studies conducted on current transformers. Emphasis is placed on iron loss. The results of the studies are presented and discussed. This report includes tables, and illustrations.
Date: 1911
Creator: Agnew, P. G.
Object Type: Report
System: The UNT Digital Library
The Determination of the Constants of Instrument Transformers (open access)

The Determination of the Constants of Instrument Transformers

Report issued by the Bureau of Standards over studies on instrument transformers. As stated in the first paragraph, "the principle of the method here described is the same for both current and potential transformers, being an application of the potentiometer method" (p. 281). The methods and equipment studied are presented and discussed.
Date: 1911
Creator: Agnew, P. G. & Fitch, T. T.
Object Type: Report
System: The UNT Digital Library
Aerodynamic Coefficients and Transformation Tables (open access)

Aerodynamic Coefficients and Transformation Tables

From Introduction: "The following brief explanation with tables of equivalents in various systems of units, has been prepared in order to facilitate such transformation."
Date: 1918~
Creator: Ames, Joseph S.
Object Type: Report
System: The UNT Digital Library
Economic Methods of Utilizing Western Lignites (open access)

Economic Methods of Utilizing Western Lignites

Report issued by the Bureau of Mines over western lignite. The economic use of these lignite deposits is discussed. This report includes tables, illustrations, and photographs.
Date: November 1915
Creator: Babcock, E. J.
Object Type: Report
System: The UNT Digital Library
Life Zones and Crop Zones of New Mexico (open access)

Life Zones and Crop Zones of New Mexico

Discusses geography, climate, agricultural practices, and crops of each life zone in New Mexico. Provides mammal, breeding bird, reptile, amphibian, and plant species list for each zone. Includes a life zone map.
Date: September 5, 1913
Creator: Bailey, Vernon
Object Type: Report
System: The UNT Digital Library
Revision of the Pocket Gophers of the Genus Thomomys (open access)

Revision of the Pocket Gophers of the Genus Thomomys

Describes habits, predators, morphology, sexual variation, pelages, and distribution of pocket gophers. Describes genera and group relations. Describes, lists locations and distribution, and provides a key for species and subspecies.
Date: November 15, 1915
Creator: Bailey, Vernon
Object Type: Report
System: The UNT Digital Library
Instruments for Recording Carbon Dioxide in Flue Gases (open access)

Instruments for Recording Carbon Dioxide in Flue Gases

From introduction: "The purpose of the Bureau of Mines in publishing the results is to show the factors which may affect the accuracy of CO2 recorder and the manner in which a recorder should be tested."
Date: 1916
Creator: Barkley, J. F. & Flagg, S. B.
Object Type: Report
System: The UNT Digital Library
The Decline and Ultimate Production of Oil Wells, with Notes on the Valuation of Oil Properties (open access)

The Decline and Ultimate Production of Oil Wells, with Notes on the Valuation of Oil Properties

From General Statement Purpose of the Report: "The present investigation was undertaken for the purpose of supplying some of the material so badly needed in the valuation and more efficient operation of oil properties. Because of the lack of time for further studies, the amount of data already accumulated and the policy of the Bureau of Mines of publishing as soon as possible any information that may be of use to an industry, the bulletin is issued now."
Date: 1919
Creator: Beal, Carl H.
Object Type: Report
System: The UNT Digital Library
Foundry-Cupola Gases and Temperatures (open access)

Foundry-Cupola Gases and Temperatures

From Introduction: "Among the investigations that the Bureau of Mines is conducting with a view to increasing efficiency in utilization of fuels belonging to or for the use of the Government is an investigation of the processes that take place in a foundry cupola during a melt."
Date: 1913
Creator: Belden, A. W.
Object Type: Report
System: The UNT Digital Library
Metallurgical Coke (open access)

Metallurgical Coke

Technical paper issued by the Bureau of Mines over studies on metallurgical coke. As stated in the introduction, "in this paper the attempt is made to summarize the history of coke making in the United States, to indicate the development of different methods and the modern types of ovens, and to point out the composition and physical properties of the metallurgical cokes produced in this country" (p. 5). This paper includes tables, illustrations, photographs, and a map.
Date: September 1913
Creator: Belden, A. W.
Object Type: Report
System: The UNT Digital Library
Washing and Coking Tests of Coal at the Fuel-Testing Plant at the Fuel Testing Plant, Denver, Colo., July 1, 1908, to June 30, 1909 (open access)

Washing and Coking Tests of Coal at the Fuel-Testing Plant at the Fuel Testing Plant, Denver, Colo., July 1, 1908, to June 30, 1909

From Introduction: "This bulletin deals with washing and coking tests of coal made at the Government fuel-testing plant in Denver, Colo., between July 1, 1908, and June 30, 1909."
Date: 1912
Creator: Belden, A. W.; Delamater, G. R.; Groves, J. W. & Way, K. M.
Object Type: Report
System: The UNT Digital Library
The Upper Cretaceous and Eocene floras of South Carolina and Georgia (open access)

The Upper Cretaceous and Eocene floras of South Carolina and Georgia

Introduction: the following report is the first systematic account of fossil plants from the state of South Carolina.
Date: 1914
Creator: Berry, Edward Wilber
Object Type: Report
System: The UNT Digital Library
Meteorology and Aeronautics (open access)

Meteorology and Aeronautics

A handbook in which properties and general phenomena of the atmosphere which aeronauts and aviators should understand are discussed.
Date: 1917
Creator: Blair, William R.
Object Type: Report
System: The UNT Digital Library
Waste of Oil and Gas in the Mid-Continent Fields (open access)

Waste of Oil and Gas in the Mid-Continent Fields

Technical paper issued by the Bureau of Mines over studies of waste in oil and gas fields in the mid-continent area. As stated in the introduction, this report "describes the general amounts and kinds of waste, and attempts to show the importance of conserving these natural resources" (p. 5). This paper includes tables, maps, illustrations, and photographs.
Date: May 1914
Creator: Blatchley, Raymond S.
Object Type: Report
System: The UNT Digital Library
Geology and Ore Deposits of the Park City District, Utah (open access)

Geology and Ore Deposits of the Park City District, Utah

From introduction: This survey was the first systematic work undertaken in this geologic province since the Geological Exploration of the Fortieth Parallel, in 1869, and was the first detailed geologic examination of a wide area in the Wasatch Range. Hence, an unusual amount of general geologic work in the region surrounding the special field was required to establish fundamental geologic facts.
Date: 1912
Creator: Boutwell, John Mason
Object Type: Report
System: The UNT Digital Library
Construction and Operation of a Single-Tube Cracking Furnace for Making Gasoline (open access)

Construction and Operation of a Single-Tube Cracking Furnace for Making Gasoline

Technical paper issued by the Bureau of Mines over the construction of cracking furnaces for gasoline production. Descriptions of the equipment used for construction are presented and discussed. This paper includes photographs.
Date: July 1915
Creator: Bowie, C. P.
Object Type: Report
System: The UNT Digital Library
Oil-storage Tanks and Reservoirs with a Brief Discussion of Losses of Oil in Storage and Methods of Prevention (open access)

Oil-storage Tanks and Reservoirs with a Brief Discussion of Losses of Oil in Storage and Methods of Prevention

From Introduction: "The Bureau of Mines has been conducting investigations with the view of determining the types of containers best adapted to the storage of oil. These investigations have shown that tanks composed wholly of steel give the best results. Practically all such containers in use at present have wooden roofs and this type of construction is here described, although it is the belief of the writer that concrete roofs would be far more satisfactory in every way, and that the difference in cost between a concrete and a wooden roof would, as a rule, in a few year's time, be offset by a saving oil and in cost of repairs and renewals."
Date: 1918
Creator: Bowie, C. P.
Object Type: Report
System: The UNT Digital Library
Rock Quarrying for Cement Manufacture (open access)

Rock Quarrying for Cement Manufacture

Report issued by the Bureau of Mines over rock quarries in the United States. As stated in the introduction, "the bulk of the report deals with quarrying methods and equipment, and gives special attention to drilling and blasting; a chapter on rock mining and one on prospecting are included" (p. 1). This report includes tables, illustrations, and photographs.
Date: June 1918
Creator: Bowles, Oliver
Object Type: Report
System: The UNT Digital Library
Sandstone Quarrying in the United States (open access)

Sandstone Quarrying in the United States

From Preface: "It is the aim of this bulletin to point out in a general way the location of workable sandstone deposits in the United States, and to outline the most efficient and economical methods of quarrying and preparing the rock for structural and other purposes."
Date: 1917
Creator: Bowles, Oliver
Object Type: Report
System: The UNT Digital Library
The Technology of Marble Quarrying (open access)

The Technology of Marble Quarrying

From Preface: "The aim of this bulletin is to present to the marble workers of the United States a concise statement of the most efficient and economical methods now in use for producing and preparing marble. The observations outlined refer chiefly to the methods employed in the quarrying of marble and the conditions that affect successful operation; the structure of marble and its relation to quarry processes; waste through rock imperfections and inefficient quarry methods; and means of eliminating such waste or utilizing it if elimination is impossible."
Date: 1916
Creator: Bowles, Oliver
Object Type: Report
System: The UNT Digital Library
Steaming Tests of Coals and Related Investigations: September 1, 1904, to December 31, 1908 (open access)

Steaming Tests of Coals and Related Investigations: September 1, 1904, to December 31, 1908

Report issued by the Bureau of Mines over studies conducted on fuel-testing plants. The results of steaming tests on coals are presented and discussed. This report includes tables, illustrations, and photographs.
Date: 1912
Creator: Breckenridge, L. P.; Kreisinger, Henry & Ray, Walter T.
Object Type: Report
System: The UNT Digital Library
Mineral Resources of Alaska: Report on Progress of Investigations in 1913 (open access)

Mineral Resources of Alaska: Report on Progress of Investigations in 1913

From preface: The present volume is the tenth of a series of annual bulletins treating of the progress of mining in Alaska and summarizing the results achieved during the year in the investigations of the mineral resources of the Territory.
Date: 1914
Creator: Brooks, Alfred H.
Object Type: Report
System: The UNT Digital Library
Report on Progress of Investigations of Mineral Resources of Alaska in 1909 (open access)

Report on Progress of Investigations of Mineral Resources of Alaska in 1909

Annual summary describing the conditions of the mining industry in Alaska and the economic results obtained by various investigations during the year. Contributions include descriptions of general features of the geology and mineral resources as well as analyses of practical implications.
Date: 1910
Creator: Brooks, Alfred H. (Alfred Hulse), 1871-1924
Object Type: Report
System: The UNT Digital Library
Safety and Efficiency in Mine Tunneling (open access)

Safety and Efficiency in Mine Tunneling

Report presenting the latest research into safety and efficiency in mine tunneling obtained during 1911 and 1912.
Date: 1914
Creator: Brunton, David W. & Davis, John A.
Object Type: Report
System: The UNT Digital Library