Technical Report Archive & Image Library (TRAIL) - 424 Matching Results
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- Clay in Petroleum-Reservoir Rocks: Its effect on Permeability, with Particular Reference to Tejon-Grapevine Area, Kern County, California
- Report issued by the Bureau of Mines over studies conducted on clays of petroleum-reservoir rocks in Kern County, California. The effects of water sensitivity of clays are presented. This report includes tables, maps, illustrations, and photographs.
- Cle Elum Iron-Nickel Deposits, Kittitas County, Washington
- Report issued by the Bureau of Mines over studies conducted on the iron-nickel deposits of Kittitas County, Washington. As stated in the introduction, "the investigation consisted of road building, diamond drilling, sampling, and metallurgical tests" (p. 1). This report includes tables and maps.
- Coal Carbonization: Carbonizing Properties of Medium-Volatile Coals of Different Types
- Report issued by the U.S. Bureau of Mines on the characteristics of different coal varieties after carbonization. The properties of these different coals are presented. This report includes tables, and photographs.
- Coal-Mine Fatalities in April, 1931
- Report issued by the U.S. Bureau of Mines on the coal mine related deaths during the month of April, 1931. The number of fatalities and the causes are presented. This report includes tables and graphs.
- Coal-Mine Fatalities in December, 1930
- Report issued by the U.S. Bureau of Mines on the coal mine related deaths during December, 1930. The number of fatalities and the causes are presented. This report includes tables.
- Coal-Mine Fatalities in February, 1931
- Report issued by the U.S. Bureau of Mines on the coal mine related deaths during the month of February, 1931. The number of fatalities and the causes of each are presented. This report includes tables.
- Coal-Mine Fatalities in January, 1931
- Report issued by the U.S. Bureau of Mines on the coal mine related deaths during the month of January, 1931. The number of fatalities and their causes are presented. This report includes tables.
- Coal-Mine Fatalities in June, 1931
- Report issued by the U.S. Bureau of Mines on the coal mine related deaths that occurred during the month of June, 1931. The number of fatalities and the causes of each are presented. This report includes tables and a graph.
- Coal-Mine Fatalities in March, 1931
- Report issued by the U.S. Bureau of Mines on the coal mine related deaths that occurred during the month of March, 1931. The number of fatalities and their causes are listed. This report includes tables.
- Coal-Mine Fatalities in May, 1926
- Report issued by the U.S. Bureau of Mines on the coal-mining related deaths in May, 1926. The 126 accidents are documented and categorized. The accidents are analyzed in order to prevent future accidents, and to implement safety procedures. This report includes tables.
- Coal-Mine Fatalities in May, 1931
- Report issued by the U.S. Bureau of Mines on the coal mine related deaths that occurred during the month of May, 1931. The number of fatalities and their causes are presented. This report includes tables and graphs.
- Coal-Mine Fatalities in November, 1930
- Report issued by the U.S. Bureau of Mines on the fatalities of coal miners in November, 1930. The common causes of death, and the location of the mines that the fatalities occurred in are listed. This report includes tables.
- Coke from Low-Ash Appalachian Coals for Carbon Electrodes in Aluminum Industry with a Chapter on Comparison of Results Obtained by Trent Process for Cleaning Coal with Those by Float-and-Sink Methods
- Report issued by the U.S. Bureau of Mines on testing conducted on coking coal samples for carbon electrode use in aluminum production. The testing methods, and results are presented. This report includes tables.
- Columbia River Magnetite Sands, Clatsop County, Oregon, and Pacific County, Washington, Hammond and McGowan Deposits
- Report issued by the U.S. Bureau of Mines on investigations of the magnetite-bearing sands near the Columbia River between Oregon and Washington. Properties of the sands and magnetite deposits are listed. This report includes tables, maps, and illustrations.
- Comparative Study of Magnetic Surveys of Worcester County, Maryland: Made on the Ground and From Airplane Observations
- Report issued by the U.S. Bureau of Mines on magnetic surveys conducted on Worcester County, Maryland. The results of observations obtained on the ground and from the air are presented. This report includes tables, graphs, and maps.
- Comparative Yields of Light Oil, Tar, and Constituents from Carbonization Tests at 800 Degrees, 900 Degrees, and 1,000 Degrees Celsius
- Report issued by the U.S. Bureau of Mines on testing done on a variety of American coals collected from 32 coal beds across the country. The carbonizing properties of samples tested at 3 different temperatures are presented. This report includes tables, and graphs.
- Comparison of Gas Masks, Hose Masks, and Oxygen-Breathing Apparatus
- Report providing information about the most appropriate kinds of breathing apparatus -- gas masks, hose masks, or self-contained oxygen-breathing apparatus -- to use in different situations.
- Conditioning Water for Secondary-Recovery in Midcontinent Oil Fields
- Report issued by the U.S. Bureau of Mines on results from a study of water-injection plants in the mid-continent oil producing area. The report lists the field methods used, and the analysis of available water for injection. This report includes maps, illustrations, and photographs.
- A Convenient Table for Determining Metastable Transitions in Mass Spectra
- Report issued by the Bureau of Mines on a table developed for determining metastable transitions. The table is presented. This report includes tables, and illustrations.
- Conversion of Nicaro Nickel Oxide to Nickel Metal
- Report issued by the Bureau of Mines over testing conducted on nickel oxide to produce nickel metal. Details of testing methods and results are presented. This report includes tables, illustrations, and photographs.
- Copper Mines and Prospects Adjacent to Landlocked Bay, Prince William Sound, Alaska
- Report issued by the Bureau of Mines over explorations to find prospective copper mines near Valdez, Alaska. The results of the explorations are presented. This report includes tables, maps, and illustrations.
- Core-Drilling Testing for Base-Metal Mineralization Below the Hope Silver Mines, Granite County, Montana
- Report issued by the Bureau of Mines over base-metal testing conducted in Granite County, Montana. Descriptions of the deposits, geology, and the factual data obtained during testing are presented. This report includes tables, maps, and illustrations.
- Corrosion and Deposits in Regenerative Air Preheaters
- Report issued by the U.S. Bureau of Mines on the field tests performed on air preheaters. It also discusses the corrosion resistance of different materials, and their corrosive effects. This report contains tables, graphs, photographs and illustrations.
- Daisy Fluorite Mine: Rosiclare Lead and Fluorspar Mining Company, Hardin County, Illinois
- Report from the U.S. Bureau of Mines over the studies conducted on the Daisy mine and the Hillside mine in Hardin County, Illinois. Properties of the mines, and the types of mineral deposits found in each are presented. This report includes maps, and illustrations.
- Data Dictionary and Discussion for the Midnite Mine GIS Database
- Abstract: A geographic information system (GIS) database has been developed by the U.S. Bureau of Mines (USBM) for the Midnite Mine and surroundings in northeastern Washington State (Stevens County) on the Spokane Indian Reservation. The mine is an open pit uranium mine which has been inactive since 1981. The GIS database was compiled to serve as a repository and source of historical and research information on the mine site. The database supported USBM hydrological and reclamation research on the mine site. The database also will be used by the Bureau of Land Management and the Bureau of Indian Affairs (as well as others) for environmental assessment and reclamation planning for future remediation and reclamation of the site. This report describes the data in the GIS database and their characteristics. The report also discusses known backgrounds on the data sets and any special considerations encountered by the USBM in developing the database. Most of the database also is planned to be available to the public as a two-CD-ROM set, although separately from this report.
- Data on Pumping at the Anthracite Mines of Pennsylvania
- Report issued by the U.S. Bureau of Mines on the study of pumping at anthracite mines in Pennsylvania. The study was conducted in order to solve anthracite mine-water problems. The report includes maps, photographs, and illustrations.
- Description and Operation of the N-T-U Retort on Colorado Oil Shale
- Report issued by the Bureau of Mines over studies conducted on Colorado oil-shale. Description of the N-T-U retort is presented. This report includes tables, photographs, and illustrations.
- Design and Applications of Some Mathematical Models for Mine-Systems Analysis
- Report issued by the Bureau of Mines over mining systems. As stated in the introduction, "the purpose of this publication is to show possible application, within the field of mining, of some innovations to methods of analysis that have been developed and improved in recent years" (p. 2). This report includes tables, graphs, and illustrations.
- Destructive Distillation of Mixtures of Oil and Coal
- Report issued by the U.S. Bureau of Mines on the characteristics and behavior of oil and coal distillation processes. The effectiveness of the distillation processes and the properties of the oil and coal mixtures are presented. This report includes tables, graphs, and illustrations.
- Detection and Control of Spontaneous Heating in Coal Mine Pillars--a Case Study
- This U.S. Bureau of Mines study examined spontaneous heating episodes in coal mine pillars in an active underground coal mine. The information obtained from these incidents was then analyzed to learn which sampling methods provided the earliest indication of pillar heating. The objective of this study was to discover if the location of future events of pillar spontaneous heating could be inferred from the available information. The spontaneous heating-prone area in this evaluation involved pillars located just in by the mine portals. Several detection methods were used to determine gas levels outside as well as inside the affected pillars. It was hoped that, by incorporating external and internal sampling methods into an organized program, locations undergoing spontaneous heating could be determined more readily. This study found that by drilling small-diameter boreholes into the pillars, then obtaining gas samples from the affected pillars, the ability to locate early spontaneous heating episodes was improved. However, the ability to accurately predict future spontaneous heating events remains in question.
- Determining Seepage Characteristics of Mill-Tailings Dams by the Finite-Element Method
- Report issued by the Bureau of Mines over studies of mill-tailings dams, and disposal. Methods and development of tailings dams are discussed. This report includes tables, charts, photographs, and illustrations.
- Development and Preliminary Operation of the Gas-Combustion Oil-Shale Pilot Retort
- Report issued by the Bureau of Mines over operations of an oil-shale pilot plant. As stated in the summary, "this report describes the step-by-step development of the Gas-Combustion retort and the various modifications and means of air admission used to obtain a workable unit" (p. 2). This report includes tables, graphs, and illustrations.
- Development and Production History on the Salt Flat and Other Fault Fields of East Central Texas
- Report issued by the Bureau of Mines over the Salt Flat fields in East Central Texas. As stated in the introduction, "this report deals with the development and production history of the Salt Flat field and gives comparative data on five outstanding fault fields. Two of these fields are producing from limestone and three from sandstone reservoirs" (p. 2-3). This report includes tables, maps, photographs, and illustrations.
- Development of a Mobile Compressor and Utility Station
- Report issued by the U.S. Bureau of Mines on the development of a mobile compressor and utility station in the oil-shale mine near Rifle, Colorado during 1949. The report includes photographs and illustrations of the mobile station.
- The Development of an Electrolytic Method for the Determination of Inclusions in Plain-Carbon Steels
- Report issued by the U.S. Bureau of Mines on the specifications and development of methods used in plain-carbon steel production. Proposed methods and experiment results are presented. This report includes tables, graphs, and photographs.
- Development of Coal Combustion Sensitivity Tests for Smoke Detectors
- Standard smoldering and flaming combustion tests using small coal samples have been developed by the U.S. Bureau of Mines as a method to evaluate the response of a smoke detector. The tests are conducted using a standard smoke box designed and constructed according to Underwriters Laboratories. The tests provide a standard, easily reproducible smoke characteristic for smoldering and flaming coal combustion, based upon a comparison of the smoke optical density and the response of a standard ionization chamber to the smoke. With these standard tests, the range of threshold limits for the response of a smoke detector and the detector's reliability can be evaluated for nearly identical smoke visibility and smoke physical characteristics. The detector's threshold response limits and reliability need to be well defined prior to the instrument's use as part of a mine fire warning system for improved mine safety.
- Diamond Drilling at the Boston Consolidated Copper Mine, Salt Lake County, Utah
- Report issued by the Bureau of Mines over diamond-drilling projects in Salt Lake County. The geology, physical features, and history of the mines are presented. This report includes tables, maps, illustrations, and photographs.
- Diamond Drilling in the Metaline District, Pend Oreille County, Washington
- Report issued by the Bureau of Mines on exploration by diamond drilling in Pend Oreille County. Results of the exploration are presented. This report includes tables, maps, illustrations, and photographs.
- Diesel Engines Underground: [Part] 4. Effect on Composition of Exhaust Gas of Variables Influencing Fuel Injection
- Report issued by the Bureau of Mines over diesel engine operations. As stated in the introduction, "it is the purpose of this report to present such data and to reemphasize the importance of adequate maintenance for diesel engines used underground" (p. 2). This report includes tables, and illustrations.
- Diesel Exhaust Contamination of Tunnel Air
- Report issued by the Bureau of Mines on investigations of air contamination in tunnels due to diesel exhaust. Air samples were taken inside tunnels and measured for carbon dioxide, carbon monoxide, and nitrogen oxides. This report includes tables and graphs.
- Disposal of Oil-Field Brines in the Arkansas River Drainage Area in Western Kansas
- Report issued by the U.S. Bureau of Mines on the disposal methods of oil-field brine. The study focuses on the Arkansas River area of western Kansas. This report includes tables, graphs, illustrations, and maps.
- Drilling and Dustiness of Metal-Mine Air
- Report issued by the U.S. Bureau of Mines on the air quality in metal-mines after using wet drills. Dust samples are collected and compared to samples collected from similar metal-mines in South Africa and Australia. This report includes tables.
- Drilling and Sampling Tertiary Gold-Bearing Gravels at Badger Hill, Nevada County, California
- Report issued by the Bureau of Mines over gold-bearing deposits of Nevada County, California. Drilling and sampling of these gold deposits are discussed. This report includes tables, maps, illustrations, and photographs.
- Dust Control Considerations for Deep-Cut Mining when Utilizing Exhaust Ventilation and a Scrubber
- Abstract: The U.S. Bureau of Mines conducted a series of laboratory tests to investigate the effectiveness of using a flooded-bed scrubber with exhaust ventilation in deep-cut faces of up to 12.2 m in length. An experimental test program to determine the impact on respirable dust levels resulting from changes in face airflow, curtain setback distance, operator positioning, and operating parameters of the external spray system on the miner was completed. Gravimetric sampling was conducted in the immediate return and at three sampling locations on the off-curtain side of the entry. Statistically significant differences in dust levels on the order of 0.5 to 1.2 mg/m3 were observed between specific sampling locations and changes in several test parameters. Several of the statistically significant relationships were found at the inby operator position, which is the least desirable of the operator locations that were tested. The relative effectiveness of the dust control at the other sampling locations was not severely impacted with the scrubber operating. Dust control was the primary focus of this research; results indicated that a flooded-bed scrubber and exhaust ventilation can be a viable system for extracting deep cuts up to 12.2 m in length. The impact on methane was not evaluated.
- Dust Sources and Controls for Multiple-Machine Longwall Faces
- Abstract: Longwall mining in lower seam heights may necessitate the use of single-drum shearers to overcome size constraints associated with standard double-drum shearers. To avoid the operational problem of clearance in the tailgate entry with one single-drum shearer, two single-drum machines can be operated on the same face, with each shearer responsible for mining a predefined portion of the face. However, utilization of two shearers on the same face necessitates the positioning of one shearer operator and a jacksetter in the return air of the upwind shearer, thus complicating respirable dust control on the longwall. In an effort to evaluate the unique dust control problems associated with this type of mining, the U.S. Bureau of Mines conducted dust surveys on two multiple-machine longwall operations. Sampling was done to quantify major sources of respirable dust and to identify potential solutions to problem areas. Sampling results indicate that the cutting sequences utilized on multiple-machine faces may have to be designed to minimize dust exposure, as opposed to optimizing productivity or facilitating operational requirements. Also, state-of-the-art dust control techniques typically found on double-drum shearer longwalls must be employed to help minimize the exposure of all face personnel to traditional dust sources.
- Early Operations of the Hydrogenation Demonstration Plant, Using Rock Springs, Wyoming Coal
- Report issued by the Bureau of Mines over studies conducted on a coal-hydrogenation demonstration plant. The early operations of the demonstration plant are discussed. This report includes tables, illustrations, and photographs.
- Educational Agencies in Mining Communities
- Report on the importance of industrial education in the mining sector. It explains general education and facilities for specialized education for proficiency in a given field.
- Effect of Oil-Base Drilling Fluid Filtrate on Analysis of Cores from South Coles Levee, California, and Rangely, Colorado Fields
- Report issued by the U.S. Bureau of Mines on the study of contamination of cores obtained with conventional core barrels. The effect of the oil-based drilling fluid and analysis of the cores are presented. The report includes tables, graphs, and illustrations.
- Effectiveness of Bleeder Entries in Ventilating Pillared Areas of Bituminous-Coal Mines
- Report issued by the Bureau of Mines over studies conducted on bleeder application in bituminous coal mines. The methods and results of the studies are presented. This report includes illustrations.
- Effects of Ancient Stream Channel Deposits on Mine Roof Stability: A Case Study
- Report issued by the Bureau of Mines over studies conducted on mine roof stability. Mining methods to improve roof stability are discussed. This report includes tables, maps, illustrations, and photographs.