Technical Report Archive and Image Library (TRAIL) - 418 Matching Results

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Andover-Sulphur Hill Iron Mines, Sussex County, New Jersey
Report issued by the Bureau of Mines on the iron mines of Sussex County, New Jersey. Descriptions of the physicality, location, and drilling methods used on the deposits are presented. This report includes tables, maps, and illustrations.
Annual Report of the Explosives Division, Fiscal Year 1936
Report issued by the U.S. Bureau of Mines on the U.S. Explosives Division, and the chemical and physical testing conducted. The properties of the studies conducted during 1936 are presented. This report includes tables, illustrations, and photographs.
Annual Report of the Explosives Division, Fiscal Year 1942
Report issued by the U.S. Bureau of Mines on the annual report of work conducted by the Explosives Division during the fiscal year of 1942. Descriptions of testing projects and operations are presented. This report includes tables, graphs, illustrations, and photographs.
Annual Report of the Mining Division, Fiscal Year 1941
Report issued by the U.S. Bureau of Mines on the annual study of the work done by the Mining Division. Investigations, operations, and projects completed during the fiscal year are discussed. This report includes tables, and photographs.
Annual Report of the Mining Division, Fiscal Year 1942
Report issued by the U.S. Bureau of Mines on the annual work conducted by the Mining Division during 1942. Descriptions of projects and operations during the fiscal year are listed. This report contains tables, and photographs.
Annual Report of the Secretary of the Interior for 1949: Synthetic Liquid Fuels, Part 3. - Liquid Fuels from Agricultural Residues
Report issued by the U.S. Bureau of Mines on the development and production of synthetic liquid fuels derived from agricultural products. The amount of synthetic fuels developed from corn is presented. The report includes tables, maps, and illustrations.
Applicability of Radio to Emergency Mine Communications: Progress Report, September 1946 to November 1947
Report issued by the Bureau of Mines over the progress made in emergency mine communications. The results of testing done on low-frequency radio communication are presented. This report includes tables, graphs, illustrations, and photographs.
Application of Buckley-Leverett Techniques in Oil-Reservoir Analysis
Report issued by the Bureau of Mines over new techniques of oil-reservoir analysis. The methods used are presented. This report includes tables, and graphs.
Application of Electrical-Resistivity Surveys to Exploration for Zinc-Lead Deposits, Racine-Spurgeon Area, Newton County, Missouri
Report issued by the Bureau of Mines over surveys conducted on zinc-lead deposits of Newton County, Missouri. Results of the surveys are presented. This report includes tables, maps, and illustrations.
Application of Field Measurements and Computer Modeling to Evaluate Deep Mine Shaft Stability in Northern Idaho
Abstract: Researchers at the U.S. Bureau of Mines have developed personal-computer-based data acquisition, instrumentation, and mine visualization and modeling techniques to evaluate a mine accessway in a deep hard-rock mine in northern Idaho. These techniques were applied to a mine shaft in a large silver mine that has been in operation for many years. A very deep, rectangular, timber-supported shaft extending to depths exceeding 2.3 km (7,500 ft) had been deforming continuously as a result of nearby mining, resulting in operational problems. Preliminary visual observations and rock and support monitoring confirmed that severe diagonal distortion was occurring. Extensive field measurements and data analysis confirmed initial observations, provided insights into the cause of deformation, and defined a general approach to structural modeling. Computer analysis of the problem was initiated by developing a three-dimensional model of the terrain. This represented a volume of rock approximately 80 km3 (40 x 1010 ft) and an area on the surface surrounding the mine 9 km2 (3 square miles). Based on this model, a three-dimensional, finiteelement analysis was conducted to establish boundary conditions for sequentially more detailed two- and three-dimensional submodels of the shaft area. Results from the computer study are being used to develop new approaches to mine design and to provide design guidelines for deep mine accessways subject to severe rock-mass loading conditions.
Bending Fatigue Tests on Flattened Strand Wire Rope at High Working Loads
Abstract: The U.S. Bureau of Mines established a wire rope research laboratory to examine the factors that affect the safety and the useful life of wire rope. In the most recent work, two 32-mm 6x27H flattened strand ropes were degraded on a bending fatigue machine. The two tests were run at constant loads of 285 and 347 kN or safety factors of 2.5 and 2. Nondestructive and tensile strength tests were performed on samples of the ropes to determine the relationship between rope deterioration and rope breaking strength. Neither the area loss nor the number of broken wires measured from nondestructive tests could be used as clear indicators of the loss of strength. However, it was found from the tensile tests for both rope specimens that the strength loss was associated with the reduction of breaking strain. This suggests that measuring the strain of many short sections of a rope in the elastic region may locate the high stress sections and thus determine the condition of the rope.
Beneficiation of Chromite Ores From Western United States
Report issued by the U.S. Bureau of Mines on the sampling of chrome ore deposits in the western United States. Physical properties of the samples collected are presented. This report includes tables.
Beneficiation of Iron-Copper Ores from Kasaan Peninsula, Prince of Wales Island, Alaska
Report issued by the Bureau of Mines over studies conducted on the beneficiation of iron-copper ores. As stated in the summary, "this report summarizes the results of laboratory testing of copper-bearing magnetite ore from the Poorman, Rush and Brown, and Copper Center deposits, Kasaan Peninsula, Prince of Wales Island, southeastern Alaska" (p. 1). This report includes tables, maps, and illustrations.
Beneficiation Studies of the Oregon Coastal Dune Sands for Use as Glass Sand
Report issued by the Bureau of Mines on the coastal sands and their potential for being used as glass sand. Samples were tested, and properties of the sands are presented. This report includes tables, maps, and photographs.
Beryl Mountain, Sullivan County, New Hampshire
Report issued by the Bureau of Mines over exploration of mineral deposits on Beryl Mountain. As stated in the introduction, "testing by surface cuts, trenching, and tunneling was conducted by the Bureau of Mines from August to December 1943" (p. 1). This report includes maps.
Beryl Resources of the Black Hills of South Dakota
Report issued by the U.S. Bureau of Mines on the beryl deposits in the northern Black Hills of South Dakota. The properties and quantity of the beryl samples were evaluated. Maps, illustrations, and tables are included in the report.
Bituminous-Coal Deposits in the Vicinity of Eska, Matanuska Valley Coal Field, Alaska
Report of investigations issued by the U.S. Bureau of Mines on the estimated recoverable reserves of bituminous coal found in the Matanuska Valley Coal Field. The investigation includes studies of the area, and methods of mining which include diamond and churn drilling. This report includes maps, photographs, and illustrations.
Bituminous Coal Deposits of the Matanuska Coalfield, Alaska: Central and Western Parts, Wishbone District
Report issued by the Bureau of Mines discussing bituminous coal production of the Matanuska coalfield in Alaska. A history of the coalfield is presented, as well as drilling methods and data. This report includes tables, maps, and illustrations.
Blackbird Cobalt Deposits, Lemhi County, Idaho
Report from the U.S. Bureau of Mines on exploration of known cobalt ore deposits in Lemhi County, Idaho. Physical features of the area, and properties of the cobalt samples collected are presented. This report includes tables, maps, and illustrations.
Bovill Clay and Sand Deposit, Latah County, Idaho: Geology, Minerology, and Beneficiation Tests
Report issued by the Bureau of Mines on the clay-silica deposits found in Bovill, Idaho. As stated in the abstract, "the geology, mineralogy, beneficiation, and potential uses of the clay and quartz fractions of the Bovill deposit are described" (p. 1). This report includes tables, graphs, photographs, and maps.
Briquetting Subbituminous Coal
Report issued by the Bureau of Mines over briquetting of coal for development of more effective fuel. Materials, equipment, and processes are discussed. This report includes tables, illustrations, and photographs.
Bucket-Drilling the Coso Mercury Deposit, Inyo County, California
Report issued by the Bureau of Mines on the Coso mercury deposits of Inyo County, and development of the bucket drill for obtaining samples. Descriptions of the physical features of the deposits are listed. This report includes tables, maps, photographs, and illustrations.
Bureau of Mines Multiple-Diaphragm Recording Subsurface-Pressure Gage
Report issued by the U.S. Bureau of Mines on the measuring of temperature and pressure in oil and gas wells. Descriptions of the instrumentation developed and used for these measurements are presented. This report includes tables, graphs, and illustrations.
Bureau of Mines Research on Trailing-Cable-Fault Locators
Report issued by the Bureau of Mines over fault locators in trailing cables. The methods used for locating faults are discussed. This report includes tables, illustrations, and photographs.
Burning Anthracite Barley on a Chain-Grate Stoker in a Two-Arch Furnace
Report issued by the U.S. Bureau of Mines on the use of anthracite barley as a fuel for a chain-grate stoker in a two-arch furnace. The efficiency and capacity of the anthracite barley as fuel is presented. Tables, graphs, and illustrations are included in the report.
Byproduct Coke-Oven Tests of Washington Coals
Report issued by the U.S. Bureau of Mines on the coking-coal testing done on Washington coal. Descriptions of the testing, and properties of the coals tested are presented. This report includes tables, and photographs.
Carbon Tetrachloride Extinguisher of Electric Fires
Report discussing "the extent and nature of the hazards to firefighters from gases and smoke resulting from the application of carbon tetrachloride extinguisher to electric arcs, burning insulation or fires such as may occur in electrical apparatus and machinery. The experiments described were made for the purpose of determining the nature of gases and smoke and ascertaining their toxic properties" (p. 1).
Characteristics and Analyses of Ninety-Two Colorado Crude Oils
Report issued by the Bureau of Mines over the characteristics and properties of many different crude-oil samples from Colorado. The properties of each sample are presented. This report includes table, maps, and illustrations.
Characterization of Dredged River Sediments in 10 Upland Disposal Sites of Alabama
Abstract: The U.S. Bureau of Mines, Tuscaloosa Research Center, in cooperation with the U.S. Army Corps of Engineers under interagency Agreement No. 14-09-0078-1510, conducted a comprehensive sampling program of 10 upland disposal sites along the Alabama, Black Warrior, and Tombigbee River systems in Alabama. Samples from each site were characterized according to particle size, chemical analysis, mineralogical content, and potential end use. Additionally, samples were subjected to the Toxic Characteristic Leachate Procedure to determine the presence of potentially harmful heavy metals. Based on the results of these studies, each sample was determined to have properties amenable for use as aggregate in general-purpose portland cement concretes and certain asphalt concrete applications.
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 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.