| Deepwater Horizon: Coast Guard and Interior Could Improve Their Offshore Energy Inspection Programs |
02 Nov 2011 |
23 pages |
| Authors:
Stephen L Caldwell; Frank Rusco; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
 | The April 2010 explosion of the Deepwater Horizon, a mobile offshore drilling unit (MODU), showed that the consequences of an incident on an offshore energy facility can be significant. A key way to ensure that offshore energy facilities are meeting applicable security, safety, and production standards is through conducting periodic inspections of the facilities. The Coast Guard and the Department of the Interior (Interior) share oversight responsibility for offshore energy ... |
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| Maritime Security: Coast Guard Should Conduct Required Inspections of Offshore Energy Infrastructure |
Oct 2011 |
60 pages |
| Authors:
Stephen L Caldwell; Christopher Conrad; Neil Asaba; Alana Finley; Colleen McEnearney; Erin O Brien; Chuck Bausell; Pamela Davidson; Joshua Ormond; Jessica Orr; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
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| Congressional interest in the security of offshore energy infrastructure has increased because of the lives lost and the substantial damages that resulted from the Deepwater Horizon incident in April 2010. The U.S. Coast Guard -- a component of the Department of Homeland Security (DHS) -- is the lead federal agency for maritime security, including the security of offshore energy infrastructure. The Coast Guard oversees two main types of offshore energy ... |
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| Application of an Arbitrary Lagrangian Eulerian Method to Describe High Velocity Gas-Particle Flow Behavior |
Sep 2011 |
14 pages |
| Authors:
D M Fox; J S Lee; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| Novel computational and small-scale experimental investigations were performed in order to better understand the high velocity flow behavior of gas-particle mixtures. The motion of solid objects impacted by the flow of the mixtures was measured by use of high-speed digital video photography. Computations were performed by use of an arbitrary Lagrangian Eulerian (ALE) treatment in a nonlinear finite element code. Constitutive models for description of the solid component of the ... |
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| Mining and Exploitation of Rare Earth Elements in Africa as an Engagement Strategy in US Africa Command |
17 JUN 2011 |
88 pages |
| Authors:
Eugene V. Becker; NATIONAL DEFENSE UNIV NORFOLK VA JOINT ADVANCED WARFIGHTING SCHOOL
|
| Rare earth elements are a key ingredient in high-technology products that are critical to defense, energy and other industries that impact national security and economic viability. The United States enjoyed a monopoly in rare earth mining and exploitation until the late 1990s when China gained monopoly status. They now supply over 95% of rare earth to the world. China's explosive economic growth has put them on a path to consume ... |
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| Escape from the Delta: Preparation and Evacuation for Catastrophic Flooding in California Emergency Management Agency Region 4 |
29 Mar 2011 |
83 pages |
| Authors:
Timothy C Yuhas; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| We model the regional highway system of Central California and consider the challenge of evacuating a highly populated region from the threat of catastrophic flood. Specifically, we build a minimum cost network flow problem to represent the movement of more than one million people within Yolo, Sacramento, San Joaquin, and Stanislaus Counties. Our model solves for best case evacuation routes and clearing times assuming perfect knowledge of flood inundation and ... |
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| Deepwater Horizon Oil Spill: Preliminary Assessment of Federal Financial Risks and Cost Reimbursement and Notification Policies and Procedures |
12 Nov 2010 |
58 pages |
| Authors:
GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| On April 20, 2010, an oil spill of national significance in the Gulf of Mexico followed an explosion on the mobile offshore drilling unit Deepwater Horizon (the Deepwater Horizon oil spill). The Deepwater Horizon was leased by BP America Production Company (BP) as part of the Macondo project.1 152 days later, on September 19, 2010, BP confirmed the completion of cementing operations to prevent further oil from spilling from the ... |
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| Developing and Exploiting a Unique Dataset from South African Gold Mines for Source Characterization and Wave Propagation |
Sep 2010 |
12 pages |
| Authors:
Jordi Julia; Andrew A Nyblade; Rengin Gok; William R Walter; Lindsay Linzer; Ray Durrheim; PENNSYLVANIA STATE UNIV STATE COLLEGE
|
| In this project, we have developed and exploited a unique seismic dataset to address the characteristics of small seismic events and the associated seismic signals observed at local ( 200 km) and regional ( 2000 km) distances. The dataset has been developed using mining-induced events from three deep gold mines in South Africa recorded on in-mine networks ( 1 km) composed of tens of high-frequency sensors, a network of four ... |
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| Persian Gulf Issues |
29-Sep-2009 |
|
| Authors:
Jean-Francois Seznec; GEORGETOWN UNIV HOSPITAL WASHINGTON DC
|
 | The main points of these briefing charts are: local wars for oil within the Persian Gulf, tensions between US and China leading to armed conflict, major world players unlikely to seek control of one or more Gulf States, Gulf States policies seem to point to a switch away from an emphasis on military might to economic might, long term interest of Saudi Arabia and of other Gulf States is to ... |
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| International Methane Hydrate Research and Development Workshop (6th) held in Bergen, Norway on May 13-15, 2008 |
22 Jul 2009 |
87 pages |
| Authors:
Bjorn Kvamme; Tsutomu Uchida; Hideo Narita; Richard Coffin; Stephen Masutani; NAVAL RESEARCH LAB WASHINGTON DC CHEMICAL DYNAMICS AND DIAGNOSTICS BRANCH
|
| This document reviews the 6th International Methane Hydrate Research and Development Workshop. Researchers from the Norway, Japan and United States have held a series of these workshops in Honolulu Hawaii, Washington, DC, Vina del Mar Chile, Victoria British Columbia, and Edinburgh, Scotland over the last eight years. The primary goals of the workshops are to develop collaborations in field and laboratory research in methane hydrate research that provides sharing of ... |
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| Sea Spray Icing of Drilling and Production Platforms |
Feb-2009 |
63 pages |
| Authors:
Kathleen F Jones; Edgar L Andreas; ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB
|
| Because of the observed decrease in the ice cover in the Beaufort and Chukchi Seas, it is possible that spray icing of rigs used for oil exploration and drilling may be more frequent and possibly more severe in the coming years than it has been in the past. In this report we describe a model for sea spray icing on fixed offshore structures. The accretion of small sea spray droplets ... |
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| Oil and Gas Development in the Arctic Ocean -- Understanding the Legal and Regulatory Framework |
Sep-2008 |
7 pages |
| Authors:
Fatima Ahmad; Samuel Rauch; Mark Hodor; NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION SILVER SPRING MD
|
| Oil and gas companies have been focusing their efforts and devoting substantial resources to the Arctic Ocean with the goal of extracting potentially large oil and gas resources. While the Arctic Region may provide significant sources of energy for the United States, industry and Federal regulatory agencies must consider the impact of increased development in the Arctic environment, which is currently experiencing deterioration of sea ice due to changing climactic ... |
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| Strong Motion Studies in the Mines of Kolar Gold Fields |
Sep 2008 |
9 pages |
| Authors:
C Srinivasan; Yesurathernam A Willy; C Sivakumar; NATIONAL INST OF ROCK MECHANICS GOLDFIELD (INDIA)
|
| Rockbursts are common phenomenon in mines during mining operations. A network of geophones was used to locate and assess the stability of mine workings. The important parameters needed to assess the damage potential and severity of a rockburst is its Richter's local magnitude. It was not possible from the records of geophone due to saturation effect. A strong-motion accelerograph has been installed and has recorded many rockbursts after closure of ... |
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| Regional Event Identification Research in Asia |
Sep 2008 |
11 pages |
| Authors:
Hans E Hartse; George E Randall; Stephen J Arrowsmith; LOS ALAMOS NATIONAL LAB NM
|
| Recent event identification efforts at Los Alamos National Laboratory (LANL) have focused on mining event ground-truth data collection in central Asia and testing far-local to near-regional discriminants using earthquakes, mining explosions, and single-charge chemical explosions. Our mining event efforts have identified over 20 mines and more than 1,000 mining explosions from around the former Soviet nuclear test site (KTS) in eastern Kazakhstan. Using the Kazakh National Data Centre (KNDC) bulletin ... |
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| Kirkuk to Baiji Pipeline Exclusion Zone - Phase 3, Kirkuk, Iraq |
24-Jul-2008 |
35 pages |
| Authors:
Angelina Johnston; Kevin O'Connor; Todd Criswell; OFFICE OF INSPECTOR GENERAL ARLINGTON VA SPECIAL INSPECTOR GENERAL FOR IRAQ RECONSTRUCTION
|
| The objective of the project was to reduce oil pipeline interdictions, improve the reliability of crude oil delivery from the Kirkuk oilfields to the Baiji Oil Refinery, and increase exports of northern crude oil via the Iraq-to-Turkey Pipeline. The objective of this project assessment was to provide real-time information on relief and reconstruction projects to interested parties to enable appropriate action, when warranted. To accomplish this objective, SIGIR determined whether ... |
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| Methods for Improving the Tractability of the Block Sequencing Problem for Open Pit Mining |
01-Jul-2008 |
159 pages |
| Authors:
Martin P Gaupp; COLORADO SCHOOL OF MINES GOLDEN
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| A surface mine optimizes its profits by maximizing the net present value (NPV) of minerals extracted from the orebody. This is accomplished by creating a production schedule that defines when each section, or block, of ore is removed. Doing so efficiently requires adherence to geospatial and operational constraints. A common exact method for determining this block extraction sequence is formulating the problem as a mixed integer program where each block ... |
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| Solving the Principal - Agent Problem in Iraq: Economic Incentives Create a New Model for Security |
DEC 2007 |
133 pages |
| Authors:
Verlan R. Cole; Jayson L. Cramer; L. S. Hollingsworth; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This report evaluates several alternatives that could be used to form a public policy in Iraq for sharing oil revenues with the Iraqi people. Using the Alaska Permanent Fund dividend as a potential model for Iraq, two key criteria were formulated for comparison and contrast with other alternatives currently available to the Iraqi government. The evaluative criteria were: does the model distribute wealth to the people and does it encourage ... |
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| Manufactured Soil Field Demonstration for Constructing Wetlands to Treat Acid Mine Drainage on Abandoned Minelands |
NOV 2007 |
15 pages |
| Authors:
Charles R. Lee; Dennis L. Brandon; Richard A. Price; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| This technical note provides information on the use of dredged material in manufacturing substrate for use in constructing wetlands to treat acid mine drainage from abandoned acid coal minelands. |
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| Developing and Exploiting a Unique Seismic Data Set from South African Gold Mines for Source Characterization and Wave Propagation |
Sep 2007 |
11 pages |
| Authors:
Andrew A Nyblade; William R Walter; Rengin Gok; Lindsay Linzer; Ray Durrheim; LAWRENCE LIVERMORE NATIONAL LAB CA
|
| In this project, we are developing and exploiting a unique seismic data set to address the characteristics of small seismic events and the associated seismic signals observed at local ( 200 km) and regional ( 2000 km) distances. The data set is being developed using mining-induced events from 3 deep gold mines in South Africa recorded on in-mine networks ( 1 km) comprised of hundreds of high-frequency sensors, a network ... |
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| Regional Event Identification Research in Asia |
Sep 2007 |
11 pages |
| Authors:
Hans E Hartse; George E Randall; Xiaoning Yang; Charlotte A Rowe; LOS ALAMOS NATIONAL LAB NM
|
| Recent event identification efforts at Los Alamos National Laboratory (LANL) include mining event ground-truth data collection in central Asia, and efforts to improve the magnitude and distance amplitude correction (MDAC) discrimination methodology through derivation of Eurasian two-dimensional, regional-phase attenuation models and frequency-dependent Pn and Sn geometric-spreading models for a spherical Earth. Our mining event efforts have identified mines around the former Soviet nuclear test site in eastern Kazakhstan. Using the ... |
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| Defense Contract Management: DOD's Lack of Adherence to Key Contracting Principles on Iraq Oil Contract Put Government Interests at Risk |
JUL 2007 |
42 pages |
| Authors:
John P. Hutton; Marie Ahearn; Penny B. Augustine; Greg Campbell; Jr. James Arthur; Eric Lesonsky; Stephen Lord; Anne McDonough-Hughes; Janet McKelvey; Kenneth Patton; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| The Department of Defense's (DoD) U.S. Army Corps of Engineers (Corps) awarded the $2.5 billion Restore Iraqi Oil (RIO I) contract to Kellogg Brown & Root in March 2003 in an effort to reestablish Iraq's oil infrastructure. The contract was also used to ensure adequate fuel supplies inside Iraq. RIO I was a cost-plus-award-fee type contract that provided for payment of the contractor's costs, a fixed fee determined at inception ... |
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| Mine-Impact Burial Model (IMPACT35) Verification and Improvement Using Sediment Bearing Factor Method |
Jan 2007 |
17 pages |
| Authors:
Peter C Chu; Chenwu Fan; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Recently, a 3-D model (IMPACT35) was developed to predict a falling cylindrical mine's location and orientation in air-water-sediment columns. The model contains the following three components: 1) triple coordinate transform, 2) hydrodynamics of falling rigid object in a single medium (air, water, or sediment) and in multiple media (air-water and water-sediment interfaces), and 3) delta method for sediment resistance with the transient pore pressure. Two mine-impact burial experiments were conducted ... |
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| A System for Discovering Bioengineered Threats by Knowledge Base Driven Mining of Toxin Data |
AUG 2006 |
52 pages |
| Authors:
S. Swaminathan; BROOKHAVEN NATIONAL LAB UPTON NY
|
| This project was funded to establish a Toxin Knowledge Base (TKB) which will encompass information about bacterial toxins in general and toxins relevant to biodefense, in particular. The overall goal of this project is to establish an easy to use database viz. a Knowledge Base to populate itself and expand using machine learning techniques, to make it more dynamic. It is designed to be a bioinformatics resource focused on molecular ... |
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| Improving the Performance of a Mixed-Integer Production Scheduling Model for LKAB's Iron Ore Mine, Kiruna, Sweden |
MAY 2006 |
70 pages |
| Authors:
Michael A. Martinez; COLORADO SCHOOL OF MINES GOLDEN
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| LKAB operates the Kiruna underground iron ore mine, which utilizes a mining method known as large-scale sublevel caving. To optimize production scheduling at Kiruna, we present a combined (short- and long-term) resolution model using mixed-integer programming. The model, which incorporates various operational requirements unique to sublevel caving, minimizes deviations from demand to produce a schedule containing monthly time periods. However, the resulting model is large and solution times for schedules ... |
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| The Geology of Liberia: A Selected Bibliography of Liberian Geology, Geography and Earth Science |
MAY 2006 |
173 pages |
| Authors:
Robert L. Hadden; ARMY TOPOGRAPHIC ENGINEERING CENTER ALEXANDRIA VA
|
| This bibliography on the water and geological information or Liberia was begun in 1995 as a request through the US Department or State by the Government or Liberia. It brings together selected citations from a variety of different cartographic, geographical, geological and hydrological resources and specialized library collections. Most of the citations have location information on where these items can be located and used on site, and either borrowed through ... |
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| Sand Mining Impacts on Long-Term Dune Erosion in Southern Monterey Bay |
2006 |
15 pages |
| Authors:
Edward Thornton; Abby Sallenger; Juan C. Sesto; Laura Egley; Timothy McGee; Rost Parsons; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Southern Monterey Bay was the most intensively mined shoreline (with sand removed directly from the surf zone) in the U.S. during the period from 1906 until 1990, when the mines were closed following hypotheses that the mining caused coastal erosion It is estimated that the yearly averaged amount of mined sand between 1940 and 1984 was 128,000 m3/yr, which is approximately 50% of the yearly average dune volume loss during ... |
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| Optimizing the Long-Term Capacity Expansion and Protection of Iraqi Oil Infrastructure |
SEP 2005 |
139 pages |
| Authors:
Patrick S. Brown; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis introduces a tri-level defender-attacker-defender optimization model that prescribes how Iraq's oil infrastructure can, over time, be expanded, protected, and operated, even in the face of insurgent attacks. The outer-most defender model is a mixed-integer program that, given a set of anticipated insurgent attacks, specifies a quarterly capital expansion, defense, and operation plan to maximize oil exports over a decade-long planning horizon. The intermediate attacker model, observing the outer ... |
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| A System for Discovering Bioengineering Threats by Knowledge Base Driven Mining of Toxin Data |
AUG 2005 |
33 pages |
| Authors:
Subramanyam Swaminathan; I. V. Ramakrishnan; M. Kifer; H. Davulcu; BROOKHAVEN NATIONAL LAB UPTON NY
|
| The overall goal of this project is to establish a Toxin Knowledge Base (TKB) a bioinformatics resource primarily focused on molecular information about toxins and other virulence factors that are the natural products of biological and potential biological warfare (RW and PBW) agents. The resource will be mined to assimilate synthesize, analyze and disseminate genomic and structural information on BW and PBW genes and their products. The TKB will be ... |
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| A Better Noise Compliance Method and Validation of Mine Noise Dosimetry Data |
JUN 2005 |
18 pages |
| Authors:
Jeremy M. Slagley; Steven E. Guffey; WEST VIRGINIA UNIV MORGANTOWN DEPT OF INDUSTRIAL ENGINEERING
|
| Given the costs of Noise-Induced Hearing Loss in mining, and MSHA's proactive attention given to all mines, an average exposure determination may be more appropriate for compliance decisions than the current shift-by-shift basis. If dose averages are used, database errors must be minimized. Errors in dosimetry data can be detected by a variety of means, including: 1. from an understanding of the mathematics relating action level doses to permissible exposure ... |
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| Active Noise Control of Stageloader Noise in Longwall Mining |
10 FEB 2005 |
22 pages |
| Authors:
Jeremy M. Slagley; Steven E. Guffey; WEST VIRGINIA UNIV MORGANTOWN DEPT OF INDUSTRIAL ENGINEERING
|
| With the large-scale mechanization inherent to the mining industry, noise-induced hearing loss remains a major concern. As part of on-going efforts to develop engineering controls to reduce noise levels in longwall mining, active noise control experiments were conducted above ground on a modified non- working stageloader. Recorded underground stageloader noise was broadcast into the above ground stageloader. The result was an average 7 dBA reduction when the active noise control ... |
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| Phase I and II Archaeological Investigations at Shaw Air Force Base and the Poinsett Electronic Combat Range, Sumter County, South Carolina |
FEB 2005 |
218 pages |
| Authors:
Alvin J. Banguilan; John S. Cable; Charles E. Cantley; Leslie Raymer; Victoria Dabir-Banguilan; NEW SOUTH ASSOCIATES STONE MOUNTAIN GA
|
| This report presents the results of Phase II archaeological testing of three sites 38SU58, 38SU191 and 38SU222 as well as the results of a Phase I survey of three tracks. The tested sites all contained prehistoric cultural materials dating to the Archaic, Woodland and Mississippian periods. Site 38SU58 was determined to be not eligible for nomination to the National Register of Historian Places, while sites 38SU191 and 38SU222 were determined ... |
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| Software Cost Estimation and Sizing Methods: Issues and Guidelines |
2005 |
|
| Authors:
Shari L. Pfleeger; Felicia Wu; Rosalind Lewis; RAND CORP SANTA MONICA CA
|
| Estimating the size and cost of software is a risky business. When software is a crucial component in numerous space, weapon, aircraft, and information technology projects critical to operations, as it often is for the Air Force, accurate estimates of software costs are essential. Because software size is usually the most influential factor in determining software costs, good estimates of size are critical to good cost estimation. Rather than seeking ... |
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| Assessment of Characteristics and Remedial Alternatives for Abandoned Mine Drainage: Case Study at Staple Bend Tunnel Unit of Allegheny Portage Railroad National Historic Site, Cambria County, Pennsylvania, 2004 |
2005 |
59 pages |
| Authors:
Charles A. Cravotta III; GEOLOGICAL SURVEY RESTON VA
|
| This report describes field, laboratory, and computational methods that could be used to assess remedial strategies for abandoned mine drainage (AMD). During April-June, 2004, the assessment process was applied to AMD from bituminous coal deposits at a test site in the Staple Bend Tunnel Unit of Allegheny Portage Railroad National Historic Site (ALPO-SBTU) in Cambria County, Pennsylvania. The purpose of this study was (1) to characterize the AMD quantity and ... |
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| Rockburst Model Validation |
MAR 2004 |
63 pages |
| Authors:
Kenneth F. Sprenke; Allan C. Rohay; Michael C. Stickney; IDAHO UNIV MOSCOW DEPT OF GEOLOGICAL SCIENCES
|
| Characterization of mining-related seismic events is critical to the implementation of the Comprehensive Nuclear Test-Ban Treaty monitoring system. Mine seismicity from uncontrolled sources are particularly troublesome, with magnitudes up to 4 or 5, producing signal strengths comparable to 1-10 kiloton contained nuclear explosions. The Coeur d'Alene district in northern Idaho is the most rockburst-prone mining district in the United States, producing a daily average of about 3 events with magnitudes ... |
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| Monitoring and Mining Data Streams |
OCT 2003 |
14 pages |
| Authors:
Stan B. Edonik; BROWN UNIV PROVIDENCE RI
|
| The work of the first year of this effort was to support the implementation of the prototype for the Aurora stream processing engine and to investigate applications for this technology. An initial version of Aurora was completed, and we worked with William Vanderschallie on an Army application that involved water supply threat-level detection. The rest of this report discusses these two activities. |
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| BAMBOO: Accelerating Closed Itemset Mining by Deeply Pushing the Length-Decreasing Support Constraint |
29 SEP 2003 |
15 pages |
| Authors:
Jianyong Wang; George Karypis; MINNESOTA UNIV MINNEAPOLIS DEPT OF COMPUTER SCIENCE
|
| Previous study has shown that mining frequent patterns with length-decreasing support constraint is very helpful in removing some uninteresting patterns based on the observation that short patterns will tend to be interesting if they have a high support, whereas long patterns can still be very interesting even if their support is relatively low. However, a large number of non-closed (i.e., redundant) patterns can still not be filtered out by simply ... |
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| A Constraint Satisfaction Neural Network Approach for Data Mining Classification and Association Rules in Breast Cancer Databases |
JAN 2003 |
52 pages |
| Authors:
Georgia D. Tourassi; DUKE UNIV MEDICAL CENTER DURHAM NC
|
| We propose to explore an innovative, data mining (DM) process for application in breast cancer (BC) databases. The DM process is the Constraint Satisfaction Neural Network (CSNN). Contrary to feed-toward networks and statistical models, the CSNN has a non- hierarchical architecture that allows it to be used either as a prediction/classification tool or as an analysis tool for mining association rules in databases. This is a feasibility study to investigate ... |
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| A New Approach to Assessing Gas and Oil Resources in the Intermountain West |
FEB 2002 |
|
| Authors:
Tom LaTourrette; Mark Bernstein; Paul Holtberg; Chris Pernin; Ben Vollaard; RAND CORP SANTA MONICA CA
|
| The availability of gas and oil resources in the Intermountain Western United States has become the subject of increased debate in recent years. Several studies have concluded that substantial amounts of gas and oil resources in the region are inaccessible because of legally restricted access to federal lands (e.g., National Petroleum Council, 1999; Advanced Resources International, 2001). Some stakeholders have reacted to the studies by calling for reduced access restrictions, ... |
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| U.S. Government Funding for Science and Technology Cooperation with Russia |
2002 |
|
| Authors:
Caroline Wagner; Irene Brahmakulam; D. J. Peterson; Inda Staheli; Anny Wong; RAND CORP SANTA MONICA CA
|
| The United States government spent, on average, $350 million a year in the 1990s to support science and technology (S&T) cooperation with Russia. The amount rose in the early 1990s, peaked in 1996, and then began dropping in the late 1990s. When aggregated by dollars spent, the areas most likely to be the subject of cooperation are aerospace and aeronautical projects, engineering research, energy, and earth sciences. When counted by ... |
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| Analysis of Geophysical Logs From Six Boreholes at Lariat Gulch, Former U.S. Air Force Site PJKS, Jefferson County, Colorado |
2002 |
44 pages |
| Authors:
Frederick L. Paillet; Richard E. Hodges; Barbara S. Corland; DEPARTMENT OF THE INTERIOR WASHINGTON DC
|
| This report presents and describes geophysical logs for six boreholes in Lariat Gulch, a topographic gulch at the former U.S. Air Force site PJKS in Jefferson County near Denver, Colorado. Geophysical logs include gamma, normal resistivity, fluid-column temperature and resistivity, caliper, televiewer, and heat-pulse flowmeter. These logs were run in two boreholes penetrating only the Fountain Formation of Pennsylvanian and Permian age (logged to depths of about 65 and 570 ... |
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| U.S. Fish and Wildlife Service: Information on Oil and Gas Activities in the National Wildlife Refuge System |
31 OCT 2001 |
18 pages |
| Authors:
GENERAL ACCOUNTING OFFICE WASHINGTON DC
|
| This report responds to a request for specific information on activities related to oil and gas development and production that occurs in the U.S. Fish and Wildlife Service's National Wildlife Refuge System. The first national wildlife refuge was created in 1903 when President Theodore Roosevelt set aside a tiny island off the east coast of Florida for the protection of pelicans and other species of birds. Since then, the National ... |
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| Study of Anomalous Mine Blasts |
Oct 2001 |
11 pages |
| Authors:
Michael A Hedlin; Vitaly I Khalturin; CALIFORNIA UNIV SAN DIEGO LA JOLLA
|
| The Altai-Sayan mining region located east of Novosibirsk, Russia, comprises over 72 mines which are located between 7 and 559 km from the International Monitoring System (IMS) primary 3-component station ZAL. We have origin time and location estimates of 853 blasts that have occurred in this trend between 1/1/1995 and 6/30/2000. The mines are known to use millisecond delay-fire blasting and had explosive yields ranging from 10T to 500 T. ... |
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| Infrasound Detection of Large Mining Blasts in Kazakstan |
Oct 2001 |
11 pages |
| Authors:
Won-Young Kim; LAMONT-DOHERTY EARTH OBSERVATORY PALISADES NY
|
| Since October, 1997, we have recorded infrasound signals at Kurchatov, Kazakstan, from large mining blasts in Kazakstan and the Altay-Sayan region, Siberia. Kurchatov is an ideal site for research on infrasound and application of synergistic (seismic and acoustic) methods of event discrimination. This is because it operates a 21-element short-period seismic array and a three-component broadband seismographic station and because of its close proximity to large (100+ ton) mining operations. ... |
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| New Forces at Work in Mining: Industry Views of Critical Technologies |
2001 |
|
| Authors:
D. J. Peterson; Tom LaTourrette; James T. Bartis; RAND CORP SANTA MONICA CA
|
| This report presents an overview of technologies critical to the economic health of the mining and quarrying industries in the United States. The findings were derived from confidential discussions with leading representatives of 58 mining firms, equipment manufacturers, research institutions, and other organizations who were selected for their prominent positions in the industry and their ability to think broadly and creatively about current technology trends. The study was commissioned by ... |
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| An Analysis of Large Mining Blasts in Wyoming and Central Asia |
Sep 2000 |
11 pages |
| Authors:
Michael A Hedlin; CALIFORNIA UNIV SAN DIEGO LA JOLLA INST OF GEOPHYSICS AND PLANETARY PHYSICS
|
| We have conducted a preliminary analysis of kiloton class, anomalous, mining blasts in Wyoming using IMS seismic data. This research has begun on two fronts. We are examining well documented mine blasts in the Powder River Basin trend in Wyoming using the Pinedale seismic array (PDAR) and the single station ULM. These data are being used with near-regional video, seismic and acoustic data collected by UCSD, LANL, SMU and AFTAC ... |
|
| A Mine Explosion Source Phenomenology Experiment |
Sep 2000 |
5 pages |
| Authors:
James F Lewkowicz; Jessie L Bonner; Alfredo Urzua; WESTON GEOPHYSICAL CORP LEXINGTON MA
|
| The seismic and acoustic discrimination of large surface and underground mine blasts, including mine collapses and rock bursts, continues to be a difficult scientific problem (Report of a Working Group from Government, Industry and National Laboratories, 1999). Under a Comprehensive Nuclear-Test-Ban Treaty monitoring regime the discrimination of signals from such large mine blasts may be ambiguous. The difficulty is due, in part, to the lack of complete understanding of the ... |
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| Characterization of Mining-Induced Seismicity in the Witwatersrand Basin, South Africa |
Sep 2000 |
3 pages |
| Authors:
T H Jordan; E Richardson; C Wright; S Webb; E Kgaswane; T Kwadiba; R McRae-Samuel; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF EARTH ATMOSPHERIC AND PLANETARY SCIENCES
|
| The objective of this research is to characterize the seismicity of South Africa, with emphasis on understanding the distribution and properties of mining-induced events in the Witwatersrand Basin. The study has focused on the two-year period from April, 1997 to May, 1999, when MIT and the Carnegie Institution of Washington, supported by the U.S. National Science Foundation and in cooperation with the University of Witwatersrand and a number of other ... |
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| Monitoring Routine Mine Seismicity in the Conterminous United States |
Sep 2000 |
11 pages |
| Authors:
James W Dewey; Alena L Leeds; GEOLOGICAL SURVEY DENVER CO
|
| We are applying standard U.S. Geological Survey/National Earthquake Information Center (USGS/NEIC) earthquake detection and location methodologies to monitor routine mine seismicity in the conterminous U.S. Our principal goal is to develop knowledge of mining seismicity in districts from which teleseismically recorded mining associated seismic events might occur. This knowledge would provide a basis for understanding future seismic events from these mining districts that might be located by the International Data ... |
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| Analysis of the Administration's Proposal to Ensure Solvency of the United Mine Workers of America Combined Benefit Fund |
15 AUG 2000 |
48 pages |
| Authors:
GENERAL ACCOUNTING OFFICE WASHINGTON DC ACCOUNTING AND INFORMATION MANAGEMENT DIV
|
| This report reviews the administration's proposal to ensure the solvency of the United Mine Workers of America (UMWA) Combined Benefit Fund. Specifically, we analyze the impact of the administration's proposal to (1) extend the Abandoned Mine Land Reclamation (AML) fees, (2) reverse the effects of National Coal v. Chater (National Coal), (3) reverse the effects of Dixie Fuel Company v. Social Security Administration (Dixie Fuel, ... |
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| Acid Mine Drainage Treatment |
MAY 2000 |
7 pages |
| Authors:
Jon Fripp; Paul F. Ziemkiewicz; Hari Charkavorki; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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| Contaminated water flowing from abandoned coal mines is one of the most significant contributors to water pollution in former and current coal- producing areas. Acid mine drainage (AMD) can have severe impacts to aquatic resources, can stunt terrestrial plant growth and harm wetlands, contaminate groundwater, raise water treatment costs, and damage concrete and metal structures. In the Appalachian Mountains of the eastern United States alone, more than 7,500 miles of ... |
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| Piston Coring Capabilities at SACLANTCEN: Minimizing and Assessing Core Disturbance |
NOV 1999 |
37 pages |
| Authors:
John C. Osler; Lavinio Gualdesi; Enzo Michelozzi; Briano Tonarelli; SACLANT UNDERSEA RESEARCH CENTRE LA SPEZIA (ITALY)
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| Piston and gravity coring are techniques used to collect samples of seabed material. There are many variables that can be adjusted when operating a piston corer, such as free-fall height, core liner material, weight, piston friction, rigging, and winch speed. In order to develop a capability at SACLANTCEN to collect longer cores with minimal disturbance, the aforementioned variables were adjusted in a systematic manner in ... |
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Mining Engineering
