Technical Report Archive & Image Library (TRAIL) - 47 Matching Results
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- Life Zone Investigations in Wyoming
- Characterizes five transcontinental life zones in Wyoming; defines their extent and limits; lists mammal, breeding bird, reptile, amphibian, and plant species; and provides notes on distribution and abundance of trees observed during the survey.
- Approved Electric Lamps for Miners
- From introduction: "The Bureau of Mines calls attention to the dangers of open-flame lamps in any coal mine."
- Abstracts of Current Decisions on Mines and Mining: May to August, 1917
- Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
- Durability of Stucco and Plaster Construction: Progress Report Containing Results of Investigations up to April, 1916
- Technical paper issued by the Bureau of Standards over tests conducted on the durability of stucco construction. Construction methods are discussed. The test results are presented and discussed as well. This paper includes tables, illustrations, and photographs.
- Temperature Measurements in Bessemer and Open-Hearth Practice
- Technical paper issued by the Bureau of Standards over studies conducted on different types of furnaces, specifically the Bessemer and the open-hearth furnace. The results of the studies are presented and discussed. This paper includes tables, and illustrations.
- Gypsum Products: Their Preparation and Uses
- Technical report issued by the Bureau of Mines over the different uses of gypsum. The sources and uses of gypsum are presented and discussed. This report includes tables, photographs, and illustrations.
- Motor Gasoline Properties, Laboratory Methods of Testing, and Practical Specifications
- Technical paper issued by the Bureau of Mines over studies conducted on motor gasoline. The methods, properties, and results of the studies are presented and discussed. This paper includes tables and an illustration.
- Measurement and Specification of the Physical Factors Which Determine the Saturation of Certain Tints of Yellow
- Technical paper issued by the Bureau of Standards over studies conducted on the specifications of color. The specifications of the color yellow are discussed. This paper includes tables, illustrations, and photographs.
- Abstracts of Current Decisions on Mines and Mining: May to August, 1917
- Report issued by the Bureau of Mines over mining decisions made between May and August of 1917. Details of the decisions are presented and discussed.
- Technology of Salt Making in the United States
- Report discussing technology for the production of salt in the United States and also the more important sources of salt in the United States.
- Abstracts of Current Decisions on Mines and Mining: May to August, 1917
- Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
- Approved Electric Lamps for Miners
- Report describing the development of a number of types of lamps for miners that meet the requirements of the Bureau of Mines. Discusses the features and qualities of these lamps in detail.
- Report on Investigations of Aviation Wires and Cables, Their Fastenings and Terminal Connections
- Report presents results that show that it is possible to furnish efficient terminal connections that would allow for repairs for aviation wires and cables and eliminate the use of acid solder and blow torch.
- Investigations of Balloon and Aeroplane Fabrics
- Report presents the experimental results of fabrics used for balloons and aeroplanes. Tensile properties, surface roughness, skin friction, flammability, permeability, and water absorption were tested for different combinations of materials.
- Review of the Development of Engines Suitable for Aeronautic Service - Origin, Means Used, and Results
- Report presents requirements of internal combustion engines suitable for aircraft. Topics include: (1) service requirements for aeronautic engines - power versus weight, reliability, and adaptability factors, (2) general characteristics of present aero engines, (3) aero engine processes and functions of parts versus power-weight ratio, reliability, and adaptability factors, and (4) general arrangement, form, proportions, and materials of aero parts - power-weight ratio, reliability, and adaptability.
- Annual Report of the National Advisory Committee for Aeronautics (2nd) Together With the Message of the President of the United States Transmitting the Report for the Fiscal Year Ending June 30, 1916. Administrative Report Including Technical Report
- Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, Congressional report, summaries of the committee's activities and research accomplished, expenditures, problems, recommendations and a compilation of technical reports produced.
- General Specifications Covering Requirements of Aeronautic Instruments
- Report includes specifications for the use and production of instruments used in the navigation and operation of aircraft. Specifications are included for the following instruments: barometer or altimeter, compass, air speed meter, inclinometer, drift meter, tachometer, oil gauge, oil pressure gauge, gasoline gauge, gasoline flow indicator, distance indicator, barograph, angle of attack indicator, radiator temperature indicator, gasoline feed system pressure indicator, sextant, airplane director.
- Nomenclature for Aeronautics
- Report defines the principal terms which have come into use in the development of aeronautics.
- Mufflers for Aeronautic Engines
- Report presents the design, development and experimental results of muffling devices used to reduce noise generated by the airplane power plant.
- Carburetor Design - a Preliminary Study of the State of the Art
- Report presents a preliminary study of the state of the art of the design of carburetors for gasoline engines used in aeronautic, marine and land transportation service.
- Experimental Researches on the Resistance of Air
- Report presents the experimental results of the resistance of air of a body moving in relative movement to the air with which it is surrounded.
- Meteorology and Aeronautics
- A handbook in which properties and general phenomena of the atmosphere which aeronauts and aviators should understand are discussed.
- Theory of an Airplane Encountering Gusts, 2
- Calculations of aerodynamic effects of an airplane encountering gusts are presented.
- Aeronautic Power Plant Investigations
- Report presents the design of radiators, spark plugs and test equipment used to test the performance of aeronautic engines at high altitudes.
- The altitude effect on air speed indicators
- The report present the results of a theoretical and experimental study of the effect, on the performance of air speed indicators, of the different atmospheric conditions experienced at various altitudes.
- Investigation of Pitot Tubes
- Report describes the principles of operation and characteristics of some of the instruments which have been devised or used to measure both low and high speeds of aeroplanes. Since the pitot tube is the instrument which has been most commonly used in the United States and Great Britain as a speedometer for aeroplanes, it is treated first and somewhat more fully than the others.
- The Mining Industry in the Territory of Alaska: During the Calendar Year 1916
- From Introduction: "The year 1916 broke all previous records of mineral production in the Territory. As a consequence, there has been a noteworthy increase in the number of mines in active operation or under development, though the greater part of the increased output is the result of greater activity at mines already producing rather than of opening new mines.The Territorial inspector covered the districts from Fairbanks to Nome and the Federal Inspector covered those of southeastern and southwestern Alaska."
- Cost Accounting for Oil Producers
- From Introduction: "The Bureau of Mines publishes this report in recognition of a distinct need for a simple treatise on accounting methods adapted to the peculiarities of the petroleum industry."
- Mining and Concentration of Carnotite Ores
- From Preface: "Hence the authors have given detailed information in regard to many operations that might have given detailed information in regard to many operations that might receive little notice in an account of the mining of most metals, but the presentation of these facts in regard to carnotite is necessary because of their bearing on profitable mining and concentration, the utilization of low-grade ore, and the preservation of waste."
- Abstracts of Current Decisions on Mines and Mining: September to December, 1916
- Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
- Methods for Increasing the Recovery from Oil Sands
- From Introduction: "In this publication are considered the principles involved in increasing recovery and methods of extracting more oil from the oil-bearing formations than by usual ways of producing. These methods are: The use of gas or vacuum pumps. forcing compressed air or gas through the oil-bearing formations, displacing the oil by water, and better utilization of the natural pressures in the oil-bearing formations."
- Abstracts of Current Decisions on Mines and Mining: January to April, 1917
- Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
- Combustion of Coal and Design of Furnaces
- From Purpose and scope of Investigations: "The combustion investigations of bureau are carried on in two parts. One part is the study of the process of combustion in the fuel bed as affected by the rate of supplying air through the fuel bed, by the character of the fuel as regards structure and composition, by the thickness of fuel bed, by the method of feeding the coal and the air and by the method of heating the coal. The second part of the investigation is the study of the process of combustion of the gases and other combustible rising from the fuel bed in the combustion space, after a sufficient quantity of air has been added. The results of the study are given in this report."
- Deterioration in the Heating Value of Coal During Storage
- From Introduction: "The detailed report is presented in this bulletin, which gives full account of the tests and the analytical data covering a period of five year's storage. Data of somewhat similar experiments for shorter periods with gas coal from the Pittsburgh bed, with Pocahontas coal on the Isthmus of Panama, with Sheridan, Wyo., subbituminous coal, which used for railroad and other purposes in the West, are included."
- The Use of Permissible Explosives in the Coal Mines of Illinois
- From Introduction: "The report deals briefly with the dangers of black blasting powder now in such common use in coal mining. It discusses the development of permissible explosives and their introduction into Illinois coal mines and points out the characteristic differences between permissible explosives and black blasting powder. "
- Coking of Illinois Coals
- From Scope of Report: "The first part of this report outlines the present factors in the problem of coking Illinois coals and points out the future prospects. The second part of this report deals with the character of Illinois coals, their nature, physical properties, and chemical composition. The last part describes the tests made and gives detailed results."
- Control of Hookworm Infection at the Deep Gold Mines of the Mother Lode, California
- From Introduction: "This report presents of an investigation of hookworm infection in the deep gold mines of the Mother Lode, California. In this investigation 1,440 miners of Mother Lode have been examined for hookworm infection; 444 miners were found to be infected; and 91 miners have taken the treatment and have gotten rid of the infection."
- Occupational Hazards at Blast-Furnace Plants and Accident Prevention: Based on Records of Accidents at Blast Furnaces in Pennsylvania in 1915
- From Preface: "The information presented in this report is the outcome of a detailed investigation made at the blast-furnace plants of Pennsylvania during the year 1915 by the inspectors of the department of labor and industry of that State and by F.H. Wilcox, metallurgical engineer of the Bureau of Mines. It is hoped that this detailed review of the causes, circumstances, and prevention of accidents will be of assistance to the executive officials of the plants and to the employees by making clear the responsibility for accidents, by emphasizing the probability of repetition of many accidents unless care is taken, and by demonstrating the practicability of safeguards, thus resulting in a lessened number of injuries and fatalities."
- The Mining Industry in the Territory of Alaska During the Calendar Year 1915
- From Introduction: "This condition is likely to be serious, as preparations have been made for opening the Matanuska, Bering River, and Neanna coal fields, and a number of permits granting the free use of 10-acre tracts in other fields throughout the Territory have been issued.The need of a comprehensive inspection law and experienced engineers to safeguard the opening of coal mines by operators who are not familiar with coal mining and are using inexperienced help is obvious."
- Yearbook of the Bureau of Mines 1916
- From Introduction: "This bulletin describes in some detail the more important work done by the Bureau of Mines during 1916 in efforts to increase safety and efficiency in the mineral industries. This bulletin gives descriptions of some noteworthy safety devices and discusses in fuller detail than the annual reports the relation of the bureau's work to the general problems of safety and efficiency in the mineral industries and the significance of the results that the bureau has been able to achieve."
- Abstracts of Current Decisions on Mines and Mining: May to August, 1916
- Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
- Concentration Experiments with the Siliceous Red Hematite of the Birmingham District, Alabama
- From Introduction: "The results of concentration experiments with these ores made a more thorough and systematic investigation desirable. In consequence, the author subsequently collected samples in the district, and these became the basis of the experimental work described in this report. The results are published by the Bureau of Mines as a part of its efforts to increase efficiency in the utilization of mineral resources."
- 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."
- Extraction of Gasoline from Natural Gas by Absorption Methods
- From Introduction: "This report deals with a method of extracting gasoline from natural gas by absorbing the gasoline in oil and subsequently separating it from the oil by distillation."
- Blast-Furnace Breakouts, Explosions, and Slips, and Methods of Prevention
- From Introduction: "This bulletin, which is arranged in three parts, treats of the causes and prevention of blast-furnace breakouts, explosions, and slips."
- Siliceous Dust in Relation to Pulmonary Disease Among Miners in the Joplin District, Missouri
- From Introduction: "This report describes the lead and zinc deposits and the mining methods employed in the sheet-ground area of the Joplin district, Missouri, and discusses the causes and the methods of abating rock dust in the mines, the chemical and physical characteristics of the dust, and the quantities present in mine air."
- The Wet Thiogen Process for Recovering Sulphur from Sulphur Dioxide in Smelter Gases: A Critical Study
- From Introduction: "A critical study of the wet Thiogen process for extracting sulphur from smoke of smelters is one of several investigations related to the general smelter-smoke problem that are being conducted under direction of the Bureau of Mines. Work on the Thiogen process was started again in January, 1916, in the laboratories of the new mining experiment station at Berkeley, Cal., and was continued during the spring of 2016 until a point was reached where it was felt that the essential parts of the process had been carefully covered, and that some definite statements concerning the technical features and possibilities of the process, as given in this report, were warranted."