Technical Report Archive & Image Library (TRAIL) - 78 Matching Results
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- Aerial Radiometric and Magnetic Reconnaissance Survey of Baltimore, Washington, and Richmond Quadrangles: Volume 1. Final Report
- Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Baltimore, Washington, and Richmond quadrangles including background information, a description of methods, data reduction and analysis, and data presented in maps, tables, and graphical forms.
- Aerial Radiometric and Magnetic Reconnaissance Survey of Baltimore, Washington, and Richmond Quadrangles: Volume 2-A. Baltimore Quadrangle
- Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Baltimore quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
- Aerial Radiometric and Magnetic Reconnaissance Survey of Baltimore, Washington, and Richmond Quadrangles: Volume 2-B. Washington Quadrangle
- Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Washington quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
- Aerial Radiometric and Magnetic Reconnaissance Survey of Baltimore, Washington, and Richmond Quadrangles: Volume 2-C. Richmond Quadrangle
- Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Richmond quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
- Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 1. Final Report
- Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Canton, Clarksburg, Cumberland, Charleston, Charlottesville, Jenkins, Bluefield, Roanoke, Corbin, Chattanooga, and Rome quadrangle areas including background information, a description of methods, data reduction and analysis, and data presented in maps, tables, and graphical forms.
- Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 2-C. Cumberland Quadrangle
- Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Cumberland quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
- Aerial Radiometric and Magnetic Survey: Eastville/Norfolk National Topographic Map, North Carolina/Virginia/Maryland
- From abstract: "The results of analyses of the airborne gamma radiation and total magnetic field survey flown for the region identified as the Eastville/Norfolk National Topographic Maps, numbered NJ18-10 for Norfolk and NJ18-8,11 for Eastville, are presented in this report."
- Aerial Radiometric and Magnetic Survey: Salisbury National Topographic Map, Virginia/New Jersey/Delaware/Maryland
- Final report documenting a high-sensitivity airborne gamma radiation and magnetic field survey of the Salisbury National Topographic Map segment (NJ 18-5 quadrangle) including a description of the program and results with the flight line profile data and statistical analysis results.
- Aerial Radiometric and Magnetic Survey: Wilmington National Topographic Map, Delaware/Maryland/New Jersey/Pennsylvania
- From abstract: "The results of analyses of the airborne gamma radiation and total magnetic field survey flown for the region identified as the Wilmington National Topographic Maps, numbered NJ18-2 is presented in this report."
- Aerodynamic Measurements Made During Navy Investigation of Human Tolerance to Wind Blasts
- From Summary: "This report presents the aerodynamic measurements made during a Navy investigation conducted in the Langley 8-foot high speed tunnel to determine the actual human tolerance to wind blasts."
- Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses
- From Significance and value of Analyses of Coal: "The analyses published in this report cover samples of coal collected in many different parts of the country with unusual care by experiences men, in such manner as to make them representative of extensive beds of coal."
- Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples
- From Introduction: "This volume contains the descriptions of the samples whose analyses are published in the preceding volume, Part I of this bulletin. The descriptions have been compiled from the notebooks of the persons who collected the samples, have been condensed from accounts given in published reports of the United States Geological Survey, or have furnished by the collection themselves. Inasmuch as the descriptions represent the work of many persons during a period of six years, and inasmuch as they were recorded under widely differing conditions, they necessarily vary in fullness detail."
- Analyses of Mine and Car Samples of Coal Collected in the Fiscal Years 1916 to 1919
- From Introduction: "The present bulletin presents analyses and descriptions of samples collected during the fiscal years 1916 to 1919. In order that the material in this bulletin may be used to supplement that presented in Bulletins 22, 85, and 123, the same plan of geographical classification has been followed, the analyses and descriptions of the samples being grouped in alphabetical order according to the State, country, and town near which the mines or prospects sampled are situated."
- Analyses of Tipple and Delivered Samples of Coal: (Collected During the Fiscal Years 1948 to 1950 Inclusive)
- From Forward: "This bulletin is the first of a new series, which includes analyses of only tipple and delivered coal. It covers samples collected throughout the United States from July 1, 1947 to June 30, 1950 (fiscal years 1948-50). It is planned that future publications of this series will cover a period of one fiscal year only and be issued as soon as possible after June 30 of each year."
- An analytical study of the effect of airplane wake on the lateral dispersion of aerial sprays
- From the Introduction: "In the present reports the paths of liquid spray droplets issued in the flow field behind an airplane are calculated."
- Annual Report of Research and Technologic Work on Coal: Fiscal Year 1941
- Report issued by the U.S. Bureau of Mines discussing the annual report over the research and technology of coal during 1941. As stated in the foreword, "these investigations increase our fund of exact knowledge on the properties and composition of American coals and lead to better methods in mining, preparing, storing, and utilizing coal" (p. 4). This report includes tables, illustrations, photographs, and a map.
- Baltimore Harbor and Channels Deepening Study: Chesapeake Bay Hydraulic Model Investigation
- From abstract: Tests on the Chesapeake Bay hydraulic model were conducted to specifically investigate possible changes in the hydrodynamic characteristics of velocity, salinity, and tidal elevations associated with the proposed channel enlargements.
- Baltimore, Maryland--Pennsylvania--Virginia--West Virginia
- Map showing biological resources (aquatic organisms, terrestrial organisms, land use, etc.) in the Baltimore region of the Atlantic coast area. Scale 1:250,000.
- Beach and Borrow Site Sediment Investigation for a Beach Nourishment at Ocean City, Maryland
- Report describing the methodology used to sample and analyze sediment at Ocean City, Maryland as part of a beach nourishment project. During the project, sediment was moved from borrow sites to construct parts of the beach area; both the borrow sites and native beach were tested.
- Birds of Maryland and the District of Columbia
- Summary of the birds of Maryland and the District of Columbia, including geographical distribution, details on each species, and several maps of breeding ranges.
- Castleman Basin, Garrett County, Maryland
- Report published by the U.S. Bureau of Mines containing the results of a survey to determine the status of the coal beds in Maryland. The report discusses the characteristics of the coal in the area as well as mining practices and geologic overview.
- Chromite and Other Mineral Deposits in Serpentine Rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware
- From abstract: The Piedmont Upland in Maryland, Pennsylvania, and Delaware is about 160 miles long and at the most 50 miles wide. Rocks that underlie the province are the Baltimore gneiss of Precambrian age and quartzite, gneiss, schist, marble, phyllite, and greenstone, which make up the Glenarm series of early Paleozoic(?) age. These are intruded by granitic, gabbroic, and ultramafic igneous rocks. Most of the ultramafic rocks, originally peridotite, pyroxenite, and dunite, have been partly or completely altered to serpentine and talc; they are all designated by the general term serpentine. The bodies of serpentine are commonly elongate and conformable with the enclosing rocks.
- City Smoke Ordinances and Smoke Abatement
- From Introduction: "In connection with the fuel investigations conducted by the Bureau of Mines much information has been accumulated as to the smoke abatement activities in various cities. The essential features of the information are presented in this report, which, it is believed, will be of public interest and benefit, especially to those communities that are just beginning organized effort to abate unnecessary smoke."
- Coal-Mine Accidents in the United States and Foreign Countries
- From Introduction: "The lack of comparable and accurate statistics of coal-mine accidents in the united States as a whole led the Bureau of Mines in 1911 to undertake the collection of such data. The mining departments of the leading foreign coal-producing countries have long taken cognizance of the importance of statistics. The bureau feels that in presenting the tables embodied in this report it is offering the and comparable statistics of coal-min accidents for the country as a whole that have ever been published."
- 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.
- [Cumberland Quadrangle: Average Record Data Listings]
- Averaged record (statistical analysis) data listings taken during aerial gamma-ray and magnetic surveys of the Cumberland quadrangle in Maryland, Pennsylvania, Virginia, and West Virginia.
- [Cumberland Quadrangle: Flight-Line Averages]
- Flight-line averaged data taken during aerial gamma-ray and magnetic surveys, documenting mean values of eU, eTh, K, eU/eTh, eU/K, and eTh/K in geologic units for each flight line of the Cumberland quadrangle in Maryland, Pennsylvania, Virginia, and West Virginia.
- [Cumberland Quadrangle: Single Record Data Listings]
- Single record (reduced data) listings taken during aerial gamma-ray and magnetic surveys of the Cumberland quadrangle in Maryland, Pennsylvania, Virginia, and West Virginia.
- [Cumberland Quadrangle: Statistical Summaries]
- Statistical summary tables of data taken during aerial gamma-ray and magnetic surveys, listing distribution types, statistical parameters, and number of samples of eU, eTh, K, eU/eTh, eU/K, and eTh/K for the Cumberland quadrangle in Maryland, Pennsylvania, Virginia, and West Virginia.
- [Data Distributions for All Good Records]
- Tables listing data distributions for single record and average record data for flight lines in the survey area.
- Downstream Effects of Reservoir Releases to the Potomac River from Luke, Maryland, to Washington D.C.
- From purpose and scope: This report describes a method of estimating downstream responses of reservoir releases from the Bloomington and Savage Reservoirs in the upper Potomac River basin.
- Eastville, Virginia--Maryland--North Carolina
- Map showing biological resources (aquatic organisms, terrestrial organisms, land use, etc.) in the Eastville region of the Atlantic coast area. Scale 1:250,000.
- An Elementary Review of the Mathieu-Hill Equation of Real Variable Based on Numerical Solutions
- Abstract: description is given of a large number of trajectories of Mathieu's equation made on the ENIAC in 1948 and available at BRL. A large chart describing the behaviour of the solutions is given. The occasion is taken to review the essentials of the Mathieu theory for the benefit of the occasional user-proceeding from the point of view of an inspection of the numerical data.
- Estimate of Known Recoverable Reserves of Coking Coal in Allegany County, Maryland
- Report issued by the U.S. Bureau of Mines investigating the estimated reserves of coking coal in Allegany County, Maryland. The investigation also studied properties of coals and coal blends not widely used for metallurgical coke making. This report includes maps and tables.
- Estimate of Known Recoverable Reserves of Coking Coal in Allegany County, Maryland
- Report issued by the U.S. Bureau of Mines investigating the estimated reserves of coking coal in Allegany County, Maryland. The investigation also studied properties of coals and coal blends not widely used for metallurgical coke making. This report includes maps and tables.
- An Experimental Evaluation of the Radiation Protection Afforded by a Large Modern Concrete Office Building
- Abstract: "An experimental study was made to determine the effective shielding provided by a modern reinforced-concrete office building (AEC Headquarters building) from nuclear fallout. Pocket ionization chambers were used for measurement of the radiation-field strength. Fallout was simulated with distributed and point-source configurations of Co-60 and Ir-192 sources. Four typical sections were selected for study, and experiments were performed on each. These included an external wing with exposed basement walls and an external wing with a buried basement. Roof studies were made on an internal wing with a full basement and on the east end of wing A, which has a thin-roof construction. The thick-roof construction of 8 in. of concrete and 2 in. of rigid insulation covers all the building except the east end of wing A, which has 4 in. of concrete and 2 in. of insulation."
- The Feldspars of the New England and North Appalachian States
- From Introduction: "The investigations presented in this bulletin have been undertaken by the bureau with a view to a better understanding of the conditions which confront the producer of commercial feldspar and also with the object of determining wherein the various deposits of feldspar differ."
- Fisheries Ecosystem Model of the Chesapeake Bay: Methodology, Parameterization, and Model Exploration
- Report on the construction of a model to manage fisheries in the Chesapeake Bay region, to see how stocks affect the food web and provide quantified estimations. "This report describes an ecosystem model of the Chesapeake Bay, the Chesapeake Bay Fisheries Ecosystem Model (CBFEM), prepared using the Ecopath with Ecosim approach and software" (p. 5).
- [Flight Line Survey Data, Flight Lines 28-41, Days 323-347, Richmond/Baltimore Survey]
- Single-record reduced data listing for Richmond/Baltimore Survey area arranged by flight line. See pages 4-3 through 4-5 of report.
- [Flight Line Survey Data, Flight Lines 101-106, Days 324-346, Richmond/Baltimore Survey]
- Single-record reduced data listing for Richmond/Baltimore Survey area arranged by flight line. See pages 4-3 through 4-5 of report.
- [Flight Line Survey Data, Flight Lines 153-203, Days 315-323, Richmond/Baltimore Survey]
- Single-record reduced data listing for Richmond/Baltimore Survey area arranged by flight line. See pages 4-3 through 4-5 of report.
- Flood Prevention in Anthracite Mines, Northern Field: Anthracite Region of Pennsylvania, Project Number 1 (Lackawanna)
- From Scope of Report: "The report covers the following: (a) A brief description of the proposed Conowingo tunnel system, which will drain the anthracite mines of Pennsylvania into the Susquehanna River at Conowingo. Md.; (b) economic development of the Northern field and the improvements desired; (c) geology and hydrology of the Northern field; (d) the basic problem, plans, and costs of Project No.1 (Lackawanna) ; (e) economic analysis and justification of the project; and (f) final recommendations, including financing and cooperation of local interests."
- Flood Protection Plans for Cumberland, Maryland & Ridgeley, West Virginia: Hydraulic Model Investigation
- Report of a hydraulic model investigation "to determine the most economical method of providing protection for Cumberland and Ridgeley against floods somewhat greater than the flood of March 1936 Specifically, the model was used to determine: the proper sections and grades of channels required to pass the design flood with maximum reductions in flood stages; the minimum heights of levees and walls; and the channel treatment required at bridges to insure the safe passage of floodwaters with minimum alterations to the structures" (p. 4).
- The Gabbros and Associated Hornblende Rocks Occurring in the Neighborhood of Baltimore, Maryland
- From introduction: The present paper is intended as a contribution to our knowledge of a particular phase of metamorphism in eruptive rocks, i.e., that one which is dependent on the secondary development of hornblende by the paramorphism or pseudomorphism of pyroxene.
- Geology of the Harpers Ferry Quadrangle, Virginia, Maryland, and West Virginia
- The following report documents the geological mapping of the Harpers Ferry quadrangle, Virginia, Maryland, and West Virginia, from between 1989 and 1990.
- Geology of the Waterford Quadrangle, Virginia and Maryland, and the Virginia Part of the Point of Rocks Quadrangle
- The following report analyzes the geology of the Waterford quadrangle and the Virginia part of the Point of Rocks quadrangle.
- Gold Veins Near Great Falls, Maryland
- From abstract: Small deposits of native gold are present along an anastomosing system of quartz veins and shear zones just east of Great Falls, Montgomery County, Md. The deposits were discovered in 1861 and were worked sporadically until 1951, yielding more than 5,000 ounces of gold. The vein system and the principal veins within it strike a few degrees west of north, at an appreciable angle to foliation and fold axial planes in enclosing rocks of the Wissahickon Formation of late Precambrian (?) age. The veins cut granitic rocks of Devonian or pre-Devonian age and may be as young as Triassic. Further development of the deposits is unlikely under present economic conditions because of their generally low gold content and because much of the vein system lies on park property, but study of the Great Falls vein system may be useful in the search for similar deposits elsewhere in the Appalachian Piedmont.
- [Illustrations: Castleman Basin, Garrett County, Maryland]
- Maps illustrating coal beds in Castleman Basin, located in Garrett County, Maryland. The maps accompany the U.S. Bureau of Mines Bulletin discussing the geologic study and investigation of the coals in the area.
- Investigation of Lower Coal Beds in Georges Creek and North Part of Upper Potomac Basins, Allegany and Garrett Counties, Maryland: Reserves, Petrographic and Chemical Characteristics of Coals, and Stratigraphy of Area
- Report presenting the results of an investigation into various charactaristics that could increase the output lower, thinner coal beds, to replace the upper coal beds which are nearing exhaustion.
- Investigation of Lower Coal Beds in Georges Creek and North Part of Upper Potomac Basins, Allegany and Garrett Counties, Maryland: Reserves, Petrographic and Chemical Characteristics of Coals, and Stratigraphy of Area (Maps)
- Series of eleven maps to illustrate coal mines in Maryland, to accompany a report about thinning in the coal beds.