Resource Type
Serial/Series Title
United States Geological Survey Reports
211
Water Resources Investigations Reports
207
Biological services program FWS/OBS
134
United States Fish and Wildlife Service Maps
132
Argonne National Laboratory Reports
54
GJBX
52
United States Department of Energy Grand Junction Office Reports
52
30 x 60 Minute Series (Topographic)
44
National Bureau of Standards Reports
27
30 x 60 Minute Series (Topographic-Bathymetric)
10
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Mineral Investigation of the North End Roadless Area, Cochise County, Arizona
From introduction: During the spring and fall of 1979 the U.S. Bureau of Mines made a mineral investigation of the North End Roadless Area, including a literature search, a search of claim records in the Cochise County courthouse and the State office of the Bureau of Land Management, a search for mining claims and mineralized zones, and examination of known mines and prospects. Local residents and officials of mining companies the U.S. Forest Service, and Arizona State government agencies provided information regarding mining activity and mineral deposits.
Date:
1983
Creator:
Bigsby, Philip R.
Object Type:
Report
System:
The UNT Digital Library
Mineral Investigation of the Lime Hills, Narrows, and Sand Cove Wilderness Study Areas, Mohave County, Arizona
From introduction: During 1981 the Bureau of Mines conducted a field investigation of the Bureau of Land Management's Lime Hills, Narrows, and Sand Cove Wilderness Study Areas (WSA's), Mohave County, Arizona as part of a joint effort with the Geological Survey to make a mineral survey of the area. Surface workings and outcrops were examined and samples taken from rock sections that appeared to represent most of the mineralized area. Complete analytical results and sample descriptions are available for public inspection at the Bureau of Mines, Intermountain Field Operations Center, Building 20, Denver Federal Center, Denver, Colo. Part of the area also was examined and sampled in 1979 by L. W. Hamm, Bureau of Mines (Villalobos and Hamm, 1980), during a mineral resource study of the Paiute Primitive Area.
Date:
1983
Creator:
Briggs, John P.
Object Type:
Report
System:
The UNT Digital Library
Manganese Nodule Resources of Three Areas in the Northeast Pacific Ocean: With Proposed Mining-Beneficiation Systems and Costs
From introduction: While much has been written concerning nodule resources, conceptual mine-process systems, and economics, no published work is available which addresses the question of profitability of mining a specific nodule deposit. Therefore, the purposes of this report are to analyze available information on deposits in the northeast Pacific high-grade zone in an attempt to identify areas of high grade and abundance, and determine their minability and profitability based on existing technology and economics. A final purpose, irrespective of profitability, is to analyze the potential beneficial impacts nodule production could have on the U.S. supply of nickel, copper, cobalt, and manganese.
Date:
1983
Creator:
Hillman, C. Thomas
Object Type:
Report
System:
The UNT Digital Library
Mineral Investigation of the Crossman Peak Wilderness Study Area, Mohave County, Arizona
This report presents the results of a mineral survey of the Crossman Peak Wilderness Study Area, Mohave County, Arizona.
Date:
1983
Creator:
Light, Thomas D. & McDonnell, John R., Jr.
Object Type:
Report
System:
The UNT Digital Library
Ground-Water Monitoring in the Tucson Copper Mining District
Abstract: Ground-water and tailings pond monitoring in the Upper Santa Cruz Basin Mines Task Force's Special Studies Area has been performed to determine the nature and extent of aquifer contamination from copper tailings pond's recharge in the basin. A monitoring program for each of three mining areas (Mines A, B, and D) was developed. Analysis of data shows that recharge from Mine A's ponds has caused increased hardness, sulfate and total dissolved solids in local ground water. However, pumpage in the area has controlled most of the water's movement. Pond recharge from Mine B has led to similar conditions, and the degraded water is moving towards a local public-supply well. Pumpage from Mine D's interceptor wells is controlling some, but not all, of the movement of recharge seepage from Mine D's ponds. Recommendations include the need for enhanced monitoring programs at each current mine site, development of a monitoring program for Mine C's area, development of water budgets for all mines, investigation of tailings pond compaction and sliming, establishment of mine closure plans for containment of recharged pond water, and the need for additional interceptor wells in several locations.
Date:
July 1983
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Geology and Mineral Resources of the Baltimore, Boston, Lake Champlain, and Providence 1° x 2° NTMS Quadrangles
"This document contains geologic and mineral resources reports for the Baltimore, Boston, Lake Champlain, and Providence 1 x 2 National Topographic Map Series (NTMS) Quadrangles in the Northeastern United States."
Date:
March 1983
Creator:
Karfunkel, Barbara S.
Object Type:
Report
System:
The UNT Digital Library
Multidisciplinary studies of a uranium deposit in the San Juan basin, New Mexico
"Objectives of the Halo Identification Project were to (1) characterize specific deposits, (2) Develop or improve genetic models, and (3) develop and evaluate cost-effective exploration methods for deposits in specific geologic environments."
Date:
February 1983
Creator:
Sayala, Dasharatham & Ward, Daniel L.
Object Type:
Report
System:
The UNT Digital Library
Intermediate-grade uranium resource assessment project for part of the Maybell District, Sand Wash Basin, Colorado
"The purpose of this project was to evaluate and assess the Miocene Browns Park Formation of a part of the Maybell district in the Sand Wash Basin in Moffat County, Colorado, as an intermediate-grade uranium resource"
Date:
April 1983
Creator:
Goodknight, Craig S.
Object Type:
Report
System:
The UNT Digital Library
A system for obtaining high-integrity borehole fluid samples
"The following five operational subsystems of the sampling system are discussed in succeeding sections: Downhole probe and Packer Subsystem, Pump Actuator Subsystem, Cable Winch and Pulley Bridge Subsystem, Instrumentation Subsystem, Power Supply Subsystem."
Date:
June 1983
Creator:
Roberts, Eugene H.
Object Type:
Report
System:
The UNT Digital Library
NURE Stream-Sediment, Hyrogeochemical, and Aeromagnetic Data Characteristics of the Piedmont Region, Eastern United States: A Data Release
A report regarding Nure stream-sediment, hydrochemical, and aeromagnetic data characteristics of the piedmont region, in the Eastern United States:
Date:
November 1983
Creator:
Madson, Michael E.; Rush, Susan F.; Hardy, Lauren C.; LaBonte, Normand E. & Ludlam, John R.
Object Type:
Report
System:
The UNT Digital Library
Airborne Gamma-Ray Spectrometer and Magentometer Survey, Sierra Madre Detail Area (Wyoming): Final Report, Volume 2C
Volume 2C to the parent document, Airborne Gamma-Ray Spectrometer and Magnetometer Survey, Sierra Madre Detail Area, Wyoming: Final Report, Volume 1. This volume contains magnetic profile data in the Sierra Madre detail area.
Date:
1983
Creator:
High Life Helicopters Inc.
Object Type:
Report
System:
The UNT Digital Library
Airborne Gamma-Ray Spectrometer and Magentometer Survey, Sierra Madre Detail Area (Wyoming): Final Report, Volume 2D
Volume 2D to the parent document, Airborne Gamma-Ray Spectrometer and Magnetometer Survey, Sierra Madre Detail Area, Wyoming: Final Report, Volume 1. This volume contains flight line maps, geology maps, legend, flight line/geology overlays, and radiometric contour maps.
Date:
1983
Creator:
High Life Helicopters Inc.
Object Type:
Report
System:
The UNT Digital Library
Energy Related Use Conflicts for the Columbia River Estuary, Volume 2: Atlas
"This volume consists of 3 overviews, an index to the quadrants, and a series of 11 scenario maps that forecast energy related developments of the Lower Columbia River and Estuary from 1981 to 2006."
Date:
June 1983
Creator:
U.S. Fish and Wildlife Service
Object Type:
Report
System:
The UNT Digital Library
Problems Facing Coal Mining and Gas Production in the Hartshorne Coalbeds of the Western Arkoma Basin, Oklahoma
This report provides pertinent geologic information for long-range planning of subsurface coal and gas production from the Hartshorne Coalbeds. Problems encountered include the complex distribution of minable and un-minable coal, high methane content and bed pressure, faulting, variations in degree of dip, presence of natural gas fields in associated sandstones, and legal problems.
Date:
1983
Creator:
Iannacchione, Anthony T.; Kertis, C. A.; Houseknecht, D. W. & Perry, J. H.
Object Type:
Report
System:
The UNT Digital Library
Cavity Detection and Delineation Research, Report 1: Microgravimetric and Magnetic Surveys: Medford Cave Site, Florida
Partial abstract: "This report reviews the scope of a research effort initiated in 1974 at the U.S. Army Engineer Waterways Experiment Station with the objectives of (a) assessing the state of the art in geophysical cavity detection and delineation methodology and (b) developing new methods and improving or adapting old methods for application to cavity detection and delineation." This report discusses the geography, topography, site drilling tests, magnetic and microgravimetric surveys, and other information about the Medfor Cave site in Florida.
Date:
March 1983
Creator:
Butler, Dwain K.
Object Type:
Report
System:
The UNT Digital Library
Weir Jetty Performance: Hydraulic and Sedimentary Considerations: Hydraulic Model Investigation
Final report regarding studies of weir jetties as an alternative for jetty design at tidal inlets. "The hydraulic model investigation was performed to study important design parameters for a weir jetty system including weir length, elevation, orientation with respect to the shoreline and the conventional portion of the jetty structure, tidal currents over the weir section, flow patterns in the vicinity of the weir section, sediment movement over the weir and effects of the weir jetty on accretion, and erosion upcoast of the jetty system" (abstract, para. 2).
Date:
March 1983
Creator:
Seabergh, William C.
Object Type:
Report
System:
The UNT Digital Library
Mission Bay Harbor, California, Design for Wave and Surge Protection and Flood Control: Hydraulic Model Investigation
Partial abstract: A 1:100-scale (undistorted) hydraulic model, reproducing Mission Bay Harbor, approximately 3 miles of shoreline, and sufficient offshore area to permit generation of the required test waves, was used to investigate the arrangement and design of proposed structures for (a) improving hazardous entrance conditions, (b) reducing surge inside the harbor, and (c) eliminating potential flood hazards. The original proposal for harbor improvement consisted of a 2,200-ft-long offshore breakwater. The proposed structures for river flood control consisted of (a) a 1,200-ft-long weir in the middle jetty, (b) various south jetty extensions, and (c) diversion dikes on the middle jetty.
Date:
June 1983
Creator:
Curren, Charles R.
Object Type:
Report
System:
The UNT Digital Library
Computations of Turbulent Recirculating Flows with Fully Coupled Solution of Momentum and Continuity Equations
A fully coupled solution algorithm for pressure-linked fluid flow equations earlier found to be rapidly convergent in laminar flows has been extended to calculate turbulent flows. The governing mean flow equations are solved in conjunction with a two-equation (k - epsilon) turbulence model. A number of two-dimensional recirculating flows have been computed and it is shown that the calculation procedure is rapidly convergent in all the cases. The calculations have been compared with published experimental data; their agreement is in accord with other published experiences with the (k - epsilon) model in similar flows.
Date:
August 1983
Creator:
Vanka, S. P.
Object Type:
Report
System:
The UNT Digital Library
Full- and Half-Range Theory of Indefinite Sturm-Liouville Problems
This report is concerned with eigenvalue problems of the form Au = lambda Tu, where A is a selfadjoint positive differential operator and T a selfadjoint indefinite multiplicative operator on a Hilbert space H. Three particular cases are discussed in detail. In the first case, A is positive definite and T is unitary; in the second case, A is positive definite and T is bounded, but T⁻¹ is unbounded; in the third case, A is positive, dim ker(A) = 1, and T is bounded, but T⁻¹is unbounded. Emphasis is on the full-range and half-range expansion properties of the eigenfunctions.
Date:
September 1983
Creator:
Kaper, Hans G.; Kwong, Man Kam; Lekkerkerker, C. G. & Zettl, A.
Object Type:
Report
System:
The UNT Digital Library
Plastic Heat Exchangers for Waste Heat Recovery
Metallic corrosion is one of the major impediments to using the large amounts of heat available in flue and exhaust gases. Our approach is to develop plastic coatings to eliminate this corrosion problem and make this waste heat available economically. The advantages of plastics and their limitations in this application are discussed. Laboratory testing in an acid-condensing environment has been performed on numerous plastics and has identified several plastics with good potential as corrosion barriers. Polyphenylene sulfide, in particular, has resisted sulfuric acid attack for over 5000 hours and can be used at temperatures up to 300 C.
Date:
September 1983
Creator:
Roach, P. D. & Holtz, Robert E.
Object Type:
Report
System:
The UNT Digital Library
Fully Coupled Calculation of Fluid Flows with Limited Use of Computer Storage
The report describes and demonstrates the performance of a modification to an earlier solution algorithm for the calculation of multidimensional fluid flow, heat transfer, and combustion processes. The modification significantly reduces the computer storage required by the earlier algorithm without degrading the rate of convergence. The modification called as telescoping subdomain analysis (TSDA) splits the flow domain into overlapping subregions and solves them in a sequence, with known conditions on the boundaries of the subregions. The procedure has been tested in four different two-dimensional recirculating flows and the convergence rates have been equivalent to the rates with full-domain analysis. The modification offers significant savings of computer storage and cost and permits calculations with larger finite-difference grids.
Date:
October 1983
Creator:
Vanka, S. P.
Object Type:
Report
System:
The UNT Digital Library
An Approach to Programming Multiprocessing Algorithms on the Denelcor HEP
In the process of learning how to write code for the Denelcor HEP, we have developed an approach that others may well find useful. We believe that the basic synchronization primitives of the HEP (i.e., asynchronous variables), along with the prototypical patterns for their use given in the HEP FORTRAN 77 User's Guide, form too low-level a conceptual basis for the formulation of multiprocessing algorithms. We advocate the use of monitors, which can be easily implemented using the HEP primitives. Attempts to solve substantial problems without introducing higher-level constructs such as monitors can produce code that is unreliable, unintelligible, and restricted to the specific dialect of FORTRAN currently supported on the HEP. Our experience leads us to believe that solutions which are both clear and efficient can be formulated using monitors.
Date:
December 1983
Creator:
Lusk, Ewing L. & Overbeek, Ross A.
Object Type:
Report
System:
The UNT Digital Library
Implementation of Monitors with Macros: A Programming Aid for the HEP and Other Parallel Processors
In a previous paper, the advantages of using monitors when implementing multiprocessing algorithms for the Denelcor HEP were delineated. A detailed presentation is given here of how monitors can be implemented on the HEP using a simple macro processor. The thesis is developed that a small body of general-purpose monitors can be defined to handle most standard synchronization patterns. We include the macro packages required to implement some of the more common synchronization patterns, including the fairly complex logic discussed before. Code produced using these macro packages is portable from one multiprocessing environment to another. Indeed, by recoding the set of basic macros (about 100 lines of code for the Denelcor HEP), most programs that are now being written could be moved to any similar multiprocessing system.
Date:
December 1983
Creator:
Lusk, Ewing L. & Overbeek, Ross A.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Cracked Core Spray Injection Line Piping from the Quad Cities Units 1 and 2 Boiling Water Reactors
Elbow assemblies and adjacent piping from the loops A and B core spray injection lines of Quad Cities Units 1 and 2 Boiling Water Reactors have been examined in order to determine the nature and causes of coolant leakages and flaw indications detected during hydrostatic tests and subsequent ultrasonic inspections. The elbow assemblies were found to contain multiple intergranular cracks in the weld heat-affected zones. The cracking was predominantly axial in orientation in the forged elbow and wedge components, whereas mixed axial and circumferential cracking was seen in the wrought piping pieces. In at least two instances, axial cracks completely penetrated the circumferential weld joining adjacent components. Based upon the observations made in the present study, the failures were attributed to intergranular stress corrosion cracking caused by the weld-induced sensitized microstructure and residual stresses present; dissolved oxygen in the reactor coolant apparently served as the corrosive species. The predominantly axial orientation of the cracks present in the forged components is believed to be related to the banded microstructure present in these components. The metallographic studies reported are supplemented by x-radiography, chemical analysis and mechanical test results, determinations of the degree of sensitization present, and measurements of weld metal delta ferrite …
Date:
December 1983
Creator:
Diercks, D. R.
Object Type:
Report
System:
The UNT Digital Library