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Geologic and tectonic characteristics of rockbursts

Description: The modern mining enterprises have attained such scales of engineering activity that their direct influence to a rock massif and in series of cases to the region seismic regime doesn`t provoke any doubts. Excavation and removal of large volumes of rock mass, industrial explosions and other technological factors during long time can lead to the accumulation of man-made changes in rock massifs capable to cause catastrophic consequences. The stress state changes in considerable domains of massif c… more
Date: June 1, 1995
Creator: Adushkin, V. V.; Charlamov, V. A.; Kondratyev, S. V.; Rybnov, Y. S.; Shemyakin, V. M.; Sisov, I. A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Possible future environmental issues for fossil fuel technologies. Final report

Description: The work reported here was carried out for the Department of Energy's Office of Fossil Energy to identify and assess 15 to 20 major environmental issues likely to affect the implementation of fossil energy technologies between 1985 and 2000. The energy technologies specifically addressed are: oil recovery and processing; gas recovery and processing; coal liquefaction; coal gasification (surface); in situ coal gasification; direct coal combustion; advanced power systems; magnetohydrodynamics; su… more
Date: July 1, 1979
Creator: Attaway, L.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electron accelerator for tunneling through hard rock

Description: Earlier work demonstrated that intense sub-microsecond bursts of energetic electrons cause significant pulverization and spalling of a variety of rock types. The spall debris generally consists of sand, dust, and small flakes. If carried out at rapid repetition rate, this can lead to a promising technique for increasing the speed and reducing the cost of underground excavation of tunnels, mines, and storage spaces. The conceptual design features of a Pulsed Electron Tunnel Excavator capable of … more
Date: October 1, 1975
Creator: Avery, R.T. & Keefe, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluate fundamental approaches to longwall dust control. Phase III report

Description: The overall objective of the contract is to evaluate the effectiveness of available dust control technology for double-drum shearer longwall sections in a coordinated, systematic program at a few longwall test sections and to make the results available to the entire coal mining industry. This program is investigating nine different dust control techniques. These nine subprograms encompass a broad range of dust control measures ranging from administrative controls to new hardware. They span not … more
Date: March 31, 1984
Creator: Babbitt, C.; Bartlett, P.; Kelly, J.; Ludlow, J.; Mangolds, A.; Rajan, S. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Effects Of Structural Setting On The Azimuthal Velocities Of Blast Induced Ground Motion In Perlite

Description: A series of small scale explosive tests were performed during the spring of 1994 at a perlite mine located near Socorro, NM. The tests were designed to investigate the azimuthal or directional relationship between small scale geologic structures such as joints and the propagation of explosively induced ground motion. Three shots were initiated within a single borehole located at ground zero (gz) at depths varying from the deepest at 83 m (272 ft) to the shallowest at 10 m (32 ft). The intermedi… more
Date: February 1, 1995
Creator: Beattie, Susan G.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Moving baseline for evaluation of advanced coal-extraction systems

Description: This document reports results from the initial effort to establish baseline economic performance comparators for a program whose intent is to define, develop, and demonstrate advanced systems suitable for coal resource extraction beyond the year 2000. Systems used in this study were selected from contemporary coal mining technology and from conservative conjectures of year 2000 technology. The analysis was also based on a seam thickness of 6 ft. Therefore, the results are specific to the study … more
Date: April 15, 1981
Creator: Bickerton, C. R. & Westerfield, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Blasting detonators incorporating semiconductor bridge technology

Description: The enormity of the coal mine and extraction industries in Russia and the obvious need in both Russia and the US for cost savings and enhanced safety in those industries suggests that joint studies and research would be of mutual benefit. The author suggests that mine sites and well platforms in Russia offer an excellent opportunity for the testing of Sandia`s precise time-delay semiconductor bridge detonators, with the potential for commercialization of the detonators for Russian and other wor… more
Date: May 1, 1994
Creator: Bickes, R. W. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Proceedings of Twenty-Seventh Annual Institute on Mining Health, Safety and Research

Description: This Proceedings contains the presentations made during the program of the Twenty-Seventh Annual Institute on Mining Health, Safety and Research held at Virginia Polytechnic Institute and State University, Blacksburg, Virginia, on August 26-28, 1996. The Twenty-Seventh Annual Institute on Mining, Health, Safety and Research was the latest in a series of conferences held at Virginia Polytechnic Institute and State University, cosponsored by the Mine Safety and Health Administration, United State… more
Date: December 31, 1996
Creator: Bockosh, G. R.; Langton, J. & Karmis, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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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

Utilization of fuel cells to beneficially use coal mine methane. Final report

Description: DOE has been given the responsibility to encourage industry to recover and use methane that is currently being released to the atmosphere. At this time the only method being employed at the Left Fork Mine to remove methane is the mine ventilation system. The methane content was measured at one one-hundredth of a percent. To prevent this methane from being vented to the atmosphere, degasification wells are proposed. To use the coal mine methane, it is proposed to use phosphoric-acid fuel cells t… more
Date: March 1, 1996
Creator: Brown, J. T.; O`Brien, D. G.; Miller, A. R.; Atkins, R. & Sanders, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Management of dry flue gas desulfurization by-products in underground mines. Technical progress report, 1 January--31 March 1994

Description: Southern Illinois University at Carbondale will develop and demonstrate several technologies for the handling and transport of dry coal combustion residues and for the underground placement in abandoned coal mines and assess associated environmental impacts. Although parts of the Residue Characterization portion of the program were delayed because residue samples were not obtained, other parts of the program are proceeding on schedule. The delays in obtaining residue samples were primarily caus… more
Date: April 1, 1994
Creator: Chugh, Y. P.; Esling, S.; Ghafoori, N.; Honaker, R.; Paul, B.; Sevim, H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Management of dry flue gas desulfurization by-products in underground mines. Quarterly report, October--December 1994

Description: On September 30, 1993, the US Department of Energy, Morgantown Energy Technology Center and Southern Illinois University at Carbondale (SIUC) entered into a cooperative agreement entitled ``Management of Dry Flue Gas Desulfurization By-Products in Underground Mines`` (DE-FC21-93MC30252). Under the agreement, Southern Illinois University at Carbondale will develop and demonstrate several technologies for the placement of coal combustion residues in abandoned coal mines, and will assess the envir… more
Date: January 1, 1995
Creator: Chugh, Y.; Dutta, D.; Esling, S.; Ghafoori, N.; Paul, B.; Sevim, H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lightweight combustion residues-based structural materials for use in mines. Technical report, September 1--November 30, 1994

Description: The overall goal of the project is to develop a 70--80 pcf, 2,500--3,000 psi-compressive-strength cellular concrete-type product from PCC fly ash, PCC bottom ash, and/or FBC spent bed ash alone or in suitable combination thereof. The developed combustion residue-based lightweight structural material will be used to replace wooden posts and crib members in underground mines. This report outlines the work completed in the first quarter of the project. The density gradient centrifuge (DGC) has bee… more
Date: December 31, 1994
Creator: Chugh, Y.P.; Zhang, Y.; Ghosh, A.K. & Palmer, S.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Lightweight combustion residues-based structural materials for use in mines. Quarterly report, 1 December 1994--28 February 1995

Description: The overall goal of this project is to develop, design and test artificial supports (post and crib members) for use in mines manufactured from coal combustion by-product (CCB) based lightweight structural materials. The lightweight cement-fly ash grout with density ranging from 70 to 110 pcf has been developed incorporating very high volume (50--60 % of whole solid materials) fly ash. Characterization of individual component materials for the CCB-based structural materials has been performed fo… more
Date: December 1995
Creator: Chugh, Yoginder P.; Zhang, Yuzhuo; Ghosh, A. K.; Palmer, S. R; Peng, Suping & Xiao, Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lightweight Combustion Residues-Based Structural Materials for Use in Mines. Quarterly Report, 1 March 1995--31 May 1995

Description: The overall goal of this PrOject is to develop, design, and test artificial supports (post and crib members), for use in mines, which will be manufactured from coal combustion by-products (CCB) based lightweight structural materials. During the last quarter (Dec. 1, 1994--Feb. 28, 1995), it was reported that low LOI ({approx}5%) F-fly ash-based lightweight materials with density ranging from 70-1 110 pcf and compressive strength ranging from about 1,500 psi to 5,000 psi had been developed. Duri… more
Date: 1995-22~
Creator: Chugh, Yoginder P.; Zhang, Yuzhuo; Ghosh, Ashok Kumar; Palmer, Stephen R.; Peng, Suping & Xiao, Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Computer cast blast modelling

Description: Cast blasting can be designed to utilize explosive energy effectively and economically for coal mining operations to remove overburden material. The more overburden removed by explosives, the less blasted material there is left to be transported with mechanical equipment, such as draglines and trucks. In order to optimize the percentage of rock that is cast, a higher powder factor than normal is required plus an initiation technique designed to produce a much greater degree of horizontal muck m… more
Date: July 1, 1994
Creator: Chung, S.; McGill, M. & Preece, D. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Combined Air Sparge and Bioremediation of an Underground Coal Gasification Site

Description: EG&G Technical Services of West Virginia (TSWV) Inc. is successfully remediating a former underground coal gasification (UCG) test site in northeastern Wyoming. EG&G is demonstrating the effectiveness of combined air sparge and biostimulation technology. This project is being conducted for the U.S. Department of Energy (DOE ) - Morgantown Energy Technology Center (METC), the lease holder of the site. UCG testing from 1976 through 1979 contaminated three water-bearing units at the site with benz… more
Date: December 1, 1996
Creator: Covell, J. R. & Thomas, M. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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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
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Conceptual design of a regional water quality screening model. [RFF; Reach; HANFORD; ARQUAL; SEAS; NASQUAN]

Description: This water quality assessment methodology is intended to predict concentrations at future times and to estimate the impacts on water quality of energy-related activities (including industrial boilers). Estimates of impacts on water quality at future times are based on incremental changes in pollutant inputs to the body water. Important features of the model are: use of measured concentrations to account for existing conditions; consideration of incremental changes in pollutant loads; emphasis o… more
Date: January 1, 1981
Creator: Davis, M J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of ADAM/1 model for advanced coal-extraction concepts

Description: The Advanced Coal Extraction Project is sponsored by the Department of Energy at the Jet Propulsion Laboratory to define and develop advanced underground coal extraction systems which: (1) are suitable for significant remaining resources after the year 2000, and (2) promise a significant improvement in production cost and miner safety, with no degradation in miner health, environmental quality and resource recovery. System requirements in the five performance areas have been defined by Goldsmit… more
Date: January 15, 1982
Creator: Deshpande, G. K. & Gangal, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fuelcell-Hybrid Mine loader (LHD)

Description: The fuel cell hybrid mine loader project, sponsored by a government-industry consortium, was implemented to determine the viability of proton exchange membrane (PEM) fuel cells in underground mining applications. The Department of Energy (DOE) sponsored this project with cost-share support from industry. The project had three main goals: (1) to develop a mine loader powered by a fuel cell, (2) to develop associated metal-hydride storage and refueling systems, and (3) to demonstrate the fuel cel… more
Date: July 10, 2009
Creator: Dippo, James L; Erikson, Tim & Hess, Kris
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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