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Hydrologic and Geophysical Studies at Midnite Mine, Wellpinit, Washington: Summary of 1995 Field Season

Description: Abstract: The Midnite Mine is an inactive, hard-rock uranium mine on the Spokane Indian Reservation in Washington State. Oxidation of sulfide-containing minerals, primarily pyrite, produces large quantities of acidic water. Uranium and other radioactive constituents are chemically leached and dissolved in ground and surface waters. The U.S. Bureau of Mines (USBM) has worked closely with the Bureau of Indian Affairs, the Bureau of Land Management, and the Spokane Tribe of Indians to address data… more
Date: 1996
Creator: Williams, Barbara C.
Item Type: Refine your search to only Report
open access

Imaging the Sea Floor

Description: A report that provides examples of 1990's sonar advances that help map the sea floor. Two specific devices are focused on, these are the Sea Beam bathymetric mapping system and the GLORIA sidescan-sonar imaging system.
Date: 1995
Creator: Schlee, John S.; Karl, Herman A. & Torresan, M. E.
Item Type: Refine your search to only Report
open access

Implementation and Validation of a Reynolds Stress Model in the COMMIX-1C/RSM and CAPS-3D/RSM Codes

Description: A Reynolds stress model (RSM) of turbulence, based on seven transport equations, has been linked to the COMMIX-1C/RSM and CAPS-3D/RSM computer codes. Six of the equations model the transport of the components of the Reynolds stress tensor and the seventh models the dissipation of turbulent kinetic energy. When a fluid is heated, four additional transport equations are used: three for the turbulent heat fluxes and one for the variance of temperature fluctuations. All of the analytical and numeri… more
Date: August 1995
Creator: Chang, F. C. & Bottoni, M.
Item Type: Refine your search to only Report
open access

Improved Calibration Facility

Description: Aid in redesign of the calibration facility in order to: 1. Reduce the rate of exposure for calibration personnel below 1 mr/hr; 2. Reduce the rate of exposure outside of the 3745 Building; 3. Reduce the risk of breaking radium sources; 4. Improve the efficiency of calibration procedures by: a. Allowing calibration to be done faster; b. Providing several calibration ranges which can operate simultaneously in the present space allowed; c. Allowing instrument survey work to proceed while calibrat… more
Date: August 22, 1995
Creator: Roesch, W. C.
Item Type: Refine your search to only Report
open access

Improved Grindability of Taconite Ores by Microwave Heating

Description: The 11.S. Bureau of Mines has conducted studies to utilize rapid microwave heating to stress fracture ore samples. Iron ores containing hematite, magnetite, and goethite were subjected to microwave energy in batch operations at 3 kW and heated to average maximum temperatures between 840 and 940 *C. Standard Bond grindability tests showed that microwave heating reduced the work index of iron ores by 10 to 24 pct. In a microwave chamber designed to simulate a continuous throughput operation at 3 … more
Date: 1995
Creator: Walkiewicz, John W.; Lindroth, David P. & Clark, Andrea E.
Item Type: Refine your search to only Report
open access

Improved Performance of Linear Coal Cutting Compared with Rotary Cutting

Description: From abstract: The linear cutting system, developed by the U.S. Bureau of Mines, uses geometric principles developed by Cardan to produce a nearly constant cut depth. The new system has been extensively tested in a synthetic material under laboratory conditions to verify mechanical capability and to identify operational characteristics. This report details the improved performance versus rotary cutting.
Date: 1995
Creator: Roepke, Wallace W.; Hanson, B. D.; Olson, R. C.; Wingquist, C. F. & Myren, T. A.
Item Type: Refine your search to only Report
open access

Inflatable Devices for Use in Combating Mine Fires

Description: Abstract: The U.S. Bureau of Mines is conducting full-scale laboratory studies on the development of lightweight inflatable devices that can be used for rapidly isolating mine fire areas to allow for fire suppression and/or personnel escape. These inflatable devices were able to stop airflows of over 1,100 m3/min within several minutes. The remotely installed bag was designed to rapidly isolate the fire zone and to then serve, if necessary, as a containment form for the remote injection of low-… more
Date: 1996
Creator: Weiss, E. S.; Conti, R. S.; Bazala, E. M. & Pro, R. W.
Item Type: Refine your search to only Report
open access

Influence of Environmental Factors on Spark Ignition Probability

Description: Abstract: In past years, the U.S. Bureau of Mines has been involved in safety research that could ultimately relate the conditions of spark testing and actual use by estimating the simple ignition probability of a circuit in question. A major problem in estimating this probability is that results show a significant variability, even though gas mixtures and electrical parameters may be closely controlled. Some researchers have suggested that the ambient environmental conditions of the testing ma… more
Date: 1995
Creator: Peterson, Jeffrey Shawn
Item Type: Refine your search to only Report
open access

Information Exchange within the U.S. Department of Energy Pollution Prevention Community

Description: Improving Pollution Prevention and Waste Minimization Program (PP/WMIN) technologies, actions, and culture could be an important cost-cutting step for the US Department of Energy (DOE). Communicating ideas, concepts, process changes, and achievements is essential for the success of this program. The need to openly communicate ideas and concepts in a cost-effective manner is essential in an organization that has such diverse components as research and development, weapons production, and power g… more
Date: July 1995
Creator: Thuot, James R.
Item Type: Refine your search to only Report
open access

An Integrated Database to Support Research on Escherichia Coli

Description: We have used logic programming to design and implement a prototype database of genomic information for the model bacterial organism Escherichia coli. This report presents the fundamental database primitives that can be used to access and manipulate data relating to the E. coli genome. The present system, combined with a tutorial manual, provides immediate access to the integrated knowledge base for E. coli chromosome data. It also serves as the foundation for development of more user-friendly i… more
Date: January 1992
Creator: Baehr, Alezandra; Dunham, George; Ginsburg, Adam; Hagstrom, Ray; Joerg, David; Kazic, Toni et al.
Item Type: Refine your search to only Report
open access

Investigation of Acid Production, Leaching, and Transport of Dissolved Metals at an Abandoned Sulfide Tailings Impoundment: Monitoring and Physical Properties

Description: Abstract: Researchers at the U.S. Bureau of Mines conducted a long-term groundwater monitoring and site characterization program at an abandoned 10-ha, acid-producing, copper-gold tailings impoundment in north-central Washington State. The purpose was to investigate contaminant release and transport, and attenuation mechanisms in the tailings, sediments below the tailings, and gravels downgradient of the impoundment. This report summarizes the monitoring results and physical properties of the t… more
Date: 1995
Creator: Stewart, Bill M.; Williams, B. C. & Lambeth, R. H.
Item Type: Refine your search to only Report
open access

Investigation of Optimum Thrust, Cutting Speed, and Water Pressure for Tungsten Carbide and Polycrystalline Diamond Compact Roof-Bolt Drill Bits

Description: Abstract: Laboratory tests were conducted at the U.S. Bureau of Mines to determine the effects of roof-bolt drilling parameters on penetration rate in sandstone using tungsten carbide alloy (WC-Co) and polycrystalline diamond compact (PDC) drill bits. During the tests, water pressure of 552 kPa was found to be adequate for removing the cuttings from the tops of drill holes. Test results show that for both types of bits, penetration rate increased when thrust was raised from 227 to 1,588 kg. Whe… more
Date: 1995
Creator: Sundae, Laxman S.; Smelser, Thomas W. & Howie, Wayne L.
Item Type: Refine your search to only Report
open access

Ion Replacement Program Annual Report: 1993

Description: Annual report of the Ion Replacement Electrorefining Program at Aronne National Laboratory describing their research and activities. There are three key accomplishments highlighted for the year: (1) identification of a suitable sodium(beta){double_prime}-alumina/molten salt electrolyte system that functions reproducibly at 723 K, (2) actual separation of dysprosium and lanthanum in experiments, and (3) the identification of a metal alloy, Li{sub x}Sb, as an alternative ion replacement electro… more
Date: July 1993
Creator: Tomczuk, Z.; Willit, J. L. & Fischer, A. K.
Item Type: Refine your search to only Report
open access

IPNS Upgrade: a Feasibility Study

Description: Many of Argonne National Laboratory`s (ANL`s) scientific staff members were very active in R & D work related to accelerator-based spoliation sources in the 1970s and early 1980s. In 1984, the Seitz/Eastman Panel of the National Academy of Sciences reviewed U.S. materials science research facilities. One of the recommendations of this panel was that the United States build a reactor-based steady-state source, the Advanced Neutron Source (ANS), at Oak Ridge National Laboratory. Subsequently, R &… more
Date: April 1995
Creator: Argonne National Laboratory
Item Type: Refine your search to only Report
open access

Is There a Large Risk of Radiation? a Critical Review of Pessimistic Claims

Description: A number of situations where it has been claimed that moderate radiation doses cause leukemia or other cancers are carefully reviewed. We look at cases in the United States, Great Britain, and the Soviet Union. Usually it can be demonstrated that there is an alternative, more probable, explanation for the effect seen. In several cases the authors of the papers have fallen into statistical traps. The most frequent is a posteriori selection of cohort boundaries in both space and time: a trap illu… more
Date: July 1992
Creator: Shihab-Eldin, Adnan; Shlyakhter, Alexander & Wilson, Richard
Item Type: Refine your search to only Report
open access

Issues and Options in Designing and Implementing Limited Access Programs in Marine Fisheries

Description: The following report was prepared after a series of workshops held by the ad hoc NMFS Limited Access Working Group (LAWG) in the period 1994-97. This report discusses the basics of limited access programs to be developed and implemented in NMFS fisheries, design and scoping considerations, limited access alternatives, nature of the fishing right, coordination and equity, implementation--including eligibility, monitoring, and evaluations, and evaluation.
Date: May 1998
Creator: Pooley, Samuel G.
Item Type: Refine your search to only Report
open access

The Kewalo Research Facility: on the Forefront for More than 40 Years

Description: The following report provides extensive information on the Kewalo Research Facility of Oahu Island. The Kewalo Research Facility sits on Kewalo Basin and is the center for ongoing research programs designed to examine the most important environmental parameters on the behavior and physiology of tunas. Along with tuna the Kewalo Research facility is also a primary location to stage research activities associated with the studies and preservation of the Hawaiian monk seals, it also provides an im… more
Date: October 1999
Creator: Brill, Richard W.
Item Type: Refine your search to only Report
open access

A Kinetic Model for Conventional Flotation of Coal

Description: The U.S. Bureau of Mines has developed a computer model to 'describe a flotation process. Coal data from conventional flotation has been converted to a simple, two-parameter kinetic model developed by Reuter and van Deventer (j,2 3. Each set of coal data was represented by two constants, a and a, and an average flotation rate. The success of the model was demonstrated when the calculated and experimental recoveries showed good correlation. The two-parameter model allows complex data to be defin… more
Date: 1995
Creator: Susko, Frank J. & Stanley, Don A.
Item Type: Refine your search to only Report
open access

Kxp and kxpl : a Busy Man's LaTeX

Description: This report introduces the following programs: kxp: a time-saving LaTeX preprocessor, kxpl: kxp plus latex, kxh: a help facility for kxp and LaTex, ptex: a program for printing a LaTeX document, and pptex: a program for printing parts of a LaTeX document. More detailed descriptions will be given in Part 2: A Reference Manual. The appendix gives instructions on how to use Argonne's Mathematics and Computer Science Division letterhead and intralaboratory memo L(sup A)T(sub E)X styles.
Date: March 1991
Creator: Kwong, Man Kam
Item Type: Refine your search to only Report
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