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System for producing a uniform rubble bed for in-situ processes

Description: A method and a cutter are disclosed for producing a large cavity filled with a uniform bed of rubblized oil shale or other material, for in-situ processing. A raise drill head has a hollow body with a generally circular base and sloping upper surface. A hollow shaft extends from the hollow body. Cutter teeth are mounted on the upper surface of the body and relatively small holes are formed in the body between the cutter teeth. Relatively large peripheral flutes around the body allow material to… more
Date: April 10, 1981
Creator: Galloway, Terry R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Texasgulf solar cogeneration program. Mid-term topical report

Description: The status of technical activities of the Texasgulf Solar Cogeneration Program at the Comanche Creek Sulfur Mine is described. The program efforts reported focus on preparation of a system specification, selection of a site-specific configuration, conceptual design, and facility performance. Trade-off studies performed to select the site-specific cogeneration facility configuration that would be the basis for the conceptual design efforts are described. Study areas included solar system size, t… more
Date: February 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy and land use

Description: This report addresses the land use impacts of past and future energy development and summarizes the major federal and state legislation which influences the potential land use impacts of energy facilities and can thus influence the locations and timing of energy development. In addition, this report describes and presents the data which are used to measure, and in some cases, predict the potential conflicts between energy development and alternative uses of the nation's land resources. The topi… more
Date: December 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Steering system for a train of rail-less vehicles

Description: A steering system for use with a multiple vehicle train is disclosed which permits tracking without rails of one vehicle after another. This system is particularly useful for moving conveyor systems into and out of curved paths of room and pillar underground mine installations. The steering system features an elongated steering bar pivotally connected to each of adjacent vehicles at end portions of the bar permitting angular orientation of each vehicle in respect to the steering bar and other v… more
Date: March 13, 1981
Creator: Voight, Edward Theodore
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Continuous chain bit with downhole cycling capability

Description: A continuous chain bit for hard rock drilling is disclosed which is capable of downhole cycling. A drill head assembly moves axially relative to a support body while the chain on the head assembly is held in position so that the bodily movement of the chain cycles the chain to present new composite links for drilling. A pair of spring fingers on opposite sides of the chain hold the chain against movement. The chain is held in tension by a spring-biased tensioning bar. A head at the working end … more
Date: March 17, 1981
Creator: Ritter, D. F.; St. Clair, J. A. & Togami, H. K.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Failure of man-made cavities in salt and surface subsidence due to sulfur mining

Description: An engineering data base relevant to subsidence due to sulfur mining and to structural failure of cavities in salt is established, evaluated and documented. Nineteen failure events are discussed. Based on these documented failure events, capabilities of and inputs to a mathematical model of cavity failure are determined. Two failure events are adequately documented for use in model verification studies. A conclusion of this study that is pertinent to the Strategic Petroleum Reserve is that cavi… more
Date: January 1, 1981
Creator: Coates, G. K.; Lee, C. A.; McClain, W. C. & Senseny, P. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

New Mexico's energy resources '81. Annual report of Bureau of Geology in the Mining and Minerals Division of New Mexico Energy and Minerals Department

Description: Although production of U/sub 3/O/sub 8/ declined only slightly in 1980, New Mexico's share of domestic production has declined from 48% in 1976 to 35% in 1980. Production projections indicate a continued decline in 1981 and lower production until at least 1984. New Mexico has 41% of total domestic reserves producible in the $50-per-lb cost category. In keeping with the anticipated steady depletion of reserves, production of crude oil in New Mexico was 69.9 million bls, a 6.3% decline in product… more
Date: September 3, 1981
Creator: Arnold, E. C. & Hill, J. M. (comps.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental effects of a tritium release from the Savannah River Plant

Description: On March 27, 1981, a small amount of tritiated water was inadvertently released from the tritium-processing facility during a routine maintenance operation. This report describes the environmental effects of this release both on the SRP site and offsite. Also, the operation of the WIND (Wind Information and Display) emergency response system during the incident is discussed, and the predicted and diagnosed behavior of the tritium plume is compared with tritium concentrations deduced from air, v… more
Date: November 1, 1981
Creator: Garrett, A. J.; Wilhite, E. L. & Buckner, M. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Numerical prediction of subsidence with coupled geomechanical-hydrological modeling

Description: A coupled finite element geomechanical-hydrology code is currently under development for application to the problem of predicting groundwater disturbances associated with mine subsidence. The structural-fluid coupling is addressed by calculating the subsided mine geometry, with emphasis placed on determining the strata disturbance and locating damaged regions, for input into a hydrology code, which determines localized volume flow rates and aquifer fluctuations. Benefits from coupling will be b… more
Date: January 1, 1981
Creator: Girrens, S. P.; Anderson, C. A.; Bennett, J. G. & Kramer, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Geologic report on the Sand Wash Drilling Project, Moffat and Routt Counties, Colorado

Description: The Sand Wash Basin Drilling Project comprises twenty-seven (27) drill holes located in Moffat and Routt Counties, northwest Colorado, having an aggregate depth of 26,107.5 feet (7957.6 m). The holes penetrate the Browns Park Formation of Miocene age, which is a tuffaceous continental sandstone deposited in fluvial, eolian, and lacustrine environments. Partly based on project drilling results, uranium potential resource estimates for this formation in the $50/lb U/sub 3/O/sub 8/ forward-cost ca… more
Date: September 1, 1981
Creator: Carter, T.E. & Wayland, T.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Subsurface radar applications in the Delaware Basin. Final report, June 1, 1980-January 31, 1981. [To probe into potash bed]

Description: Purpose was to find a method of probing into potash to determine if dangers lie ahead. Of specific interest to Sandia, was the problem of outlining a breccia pipe which Mississippi Chemical Company (MCC) found protruded into the potash bed in Carlsbad, New Mexico, they were mining. MCC mined around it and continued their work. If, however, the discontinuity in the ore (breccia pipe) had any fractures linking with a high pressure water zone above the mining level, the act of mining into the pipe… more
Date: October 1, 1981
Creator: Unterberger, R.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of the mine-by experiment, climax granite, Nevada test site

Description: The Lawrence Livermore National Laboratory (LLNL) is conducting a generic test of retrievable geologic storage of nuclear spent fuel assemlbies, in an underground chamber, at the Nevada Test Site, Nye County, Nevada. This generic test is located 420 m below the surface, in the Climax granitic stock. Eleven canisters of spent fuel approximately 2.5 years out of reactor core (about 1.6 kW/canister thermal output) are now emplaced in a storage drift, along with 6 electrical heaters which simulate … more
Date: June 1, 1981
Creator: Heuze, F.E.; Butkovich, T.R. & Peterson, J.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geologic considerations in underground coal mining system design

Description: Geologic characteristics of coal resources which may impact new extraction technologies are identified and described to aid system designers and planners in their task of designing advanced coal extraction systems for the central Appalachian region. These geologic conditions are then organized into a matrix identified as the baseline mine concept. A sample region, eastern Kentucky, is next analyzed, using both the new baseline mine concept and traditional geologic investigative approach. The ba… more
Date: October 1, 1981
Creator: Camilli, F.A.; Maynard, D.P.; Mangolds, A. & Harris, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wire rope improvement program. Final report. [For draglines]

Description: Activities in five major areas were undertaken during the WRIP: experiments using PNL-developed bend-over-sheave fatigue test machines to generate data on which to base a model for predicting large-diameter rope performance from that of small-diameter ropes; bend-over-sheave fatigue testing to determine differences in rope failure rates at varying rope loads; analyses to determine how wire ropes actually fail; development of a load sensor to record and quantity operational loads on drag and hoi… more
Date: September 1, 1981
Creator: Alzheimer, J. M.; Anderson, W. E.; Beeman, G. H.; Dudder, G. B.; Erickson, R.; Glaeser, W. A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Paraho oil shale module. Critical items identification, Task 11

Description: A critical item in the demonstration plant is one that has a notable impact on plant performance. Generally, these items have required that decisions be made throughout the course of the Phase I work to facilitate design work and preparation of estimates. The approach taken in each case represents the engineer's best judgement, based on both experience and timely evaluations. Certain critical items were identified as important enough to justify formal trade-off studies to document the alternati… more
Date: October 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gas-driven fracture propagation

Description: A one-dimensional gas-flow drives a wedge-shaped fracture into a linearly elastic, impermeable half-space which is in uniform compression, sigma/sub infinity/, at infinity. Under a constant driving pressure, p/sub 0/, the fracture/flow system accelerates through a sequence of three self-similar asymptotic regimes (laminar, turbulent, inviscid) in which the fracture grows like an elementary function of time (exponential, near-unity power, and linear; respectively). In each regime, the transport … more
Date: October 1, 1981
Creator: Nilson, R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design of highwall mining equipment electronic guidance package

Description: This report provides design specifics and guidance software for a guidance system intended for use in guiding an auger type highwall mining head through thin coal seams to depths of up to 600 ft. A small desk top computer is used at the operator's station to send and receive signals in serialized bit streams to a downhole microprocessor. The guidance system accepts signals from a variety of sensors and uses these signals to plot and control the course of the auger head automatically using compu… more
Date: November 1, 1981
Creator: Brenden, B. B.; Morgen, G. P.; Shorpik, J. R. & Farrar, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Geothermal Energy in Arizona. Quarterly Topical Progress Report, July 1-September 30, 1981

Description: Progress is reported on the following: the legislative and institutional program, cities program, outreach, the integrated alcohol/feedlot/geothermal operation, geothermal energy in the mining industry, geothermal space heating and cooling, identification of a suitable industry for a remote geothermal site, irrigation pumping, coal-fired/geothermal-assisted power plants, and area development plans. (MHR)
Date: January 1, 1981
Creator: White, Don H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Numerical simulation of fluid flow in porous/fractured media

Description: Theoretical models of fluid flow in porous/fractured media can help in the design of in situ fossil energy and mineral extraction technologies. Because of the complexity of these processes, numerical solutions are usually required. Sample calculations illustrate the capabilities of present day computer models.
Date: January 1, 1981
Creator: B.J., Travis & Cook, T.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Niobium - Proceedings of the international symposium

Description: This book presents the papers given at a symposium on niobium. Topics considered at the symposium included niobium mining, ore processing, uses, fabrication, microstructure, mechanical properties, physical properties, corrosion, physical radiation effects, and marketing.
Date: September 1981
Creator: Stuart, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Geostatistics project of the national uranium resource evaluation program. Progress report, October 1980-March 1981

Description: During the period covered by this report, we analyzed the radiometric data collected along the Texas Gulf Coast using ten discriminant analysis techniques to establish radiometric signatures and classify new observations. We conducted a survey of several methods for computing the covariance matrix of large data sets, with particular interest to one-pass algorithms. An investigation of methods of estimating upper-tail percentiles for aerial radiometric data was begun. A feasibility study was con… more
Date: October 1, 1981
Creator: Bement, T. R.; Howell, J. A.; McKay, M. D.; Johnson, M. E.; Tietjen, G. L.; Wecksung, G. W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aerosol sampling and characterization in the developing US oil-shale industry

Description: Aerosol sampling and characterization studies of workplace air were conducted at four demonstration-scale oil shale facilities located in northwestern Colorado and northeastern Utah. These facilities consisted of an underground mining/aboveground retorting facility, two modified in situ retorting facilities with associated underground mining, and a true in situ retorting facility. Emphasis was placed on study of the retorting phase of operation at these facilities. Aerosol samples were collecte… more
Date: January 1, 1981
Creator: Hargis, K.M.; Tillery, M.I.; Gonzales, M. & Garcia, L.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Longwall mining of thin seams

Description: Thin seam operations pose a challenge to the ingenuity of mining engineers to overcome the factor of human inconvenience in the restricted environment and associated high cost production. Surprisingly, low seam longwalls in the Federal Republic of Germany in an average thickness of 35 in. and dipping less than 18/sup 0/ come close to achieving the average production rate of all German longwall operations. They are all plow faces, and a consistent production of 3300 tons per day and a productivi… more
Date: January 1, 1981
Creator: Curth, E A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaluation of high-pressure drilling fluid supply systems

Description: A study was undertaken to help determine the technical and economic feasibility of developing a high-pressure fluid-jet drilling system for the production of geothermal wells. Three system concepts were developed and analyzed in terms of costs, component availability, and required new-component development. These concepts included a single-conduit system that supplies the downhole cutting nozzles directly via surface-located high-pressure pumps; a single-conduit system utilizing low-pressure su… more
Date: October 1, 1981
Creator: McDonald, M.C.; Reichman, J.M. & Theimer, K.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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