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Geotechnical studies relevant to the containment of underground nuclear explosions at the Nevada Test Site

Description: The Department of Energy and the Department of Defense are actively pursuing a program of nuclear weapons testing by underground explosions at the Nevada Test Site (NTS). Over the past 11 years, scores of tests have been conducted and the safety record is very good. In the short run, emphasis is put on preventing the release of radioactive materials into the atmosphere. In the long run, the subsidence and collapse of the ground above the nuclear cavities also are matters of interest. Currently,… more
Date: May 1, 1982
Creator: Heuze, F.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design and implementation of a fiber-optic gamma-measurement system

Description: The design and implementation of the downhole portion of a measuring system for gamma rays is presented. Included are three alternative designs for radiation-resistant collimating and condensing lenses, sample cells, turning mirrors, and fiber-optic termination techniques. Also discussed are mechanical mounts and positioners, shielding, alignment, test methods, and field installation. Some general design suggestions for optical systems in adverse environments are also presented.
Date: May 19, 1980
Creator: Reedy, R.P.; Crawford, D.W. & Roeske, F. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hanford ferrocyanide waste chemistry and reactivity preliminary catalyst and initiator screening studies

Description: During the 1950s, ferrocyanide was used to scavenge radiocesium from aqueous nitrate-containing Hanford wastes. During the production of defense materials and while these wastes were stored in high-level waste tanks at the Hanford Site, some of these wastes were likely mixed with other waste constituents and materials. Recently, Pacific Northwest Laboratory (PNL) was commissioned by Westinghouse Hanford Company (WHC) to investigate the chemical reactivity of these ferrocyanide-bearing wastes. B… more
Date: May 1, 1992
Creator: Scheele, R. D.; Bryan, S. A.; Johnston, J. W.; Tingey, J. M.; Burger, L. L. & Hallen, R. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Detonator-activated ball shutter

Description: A detonator-activated ball shutter for closing an aperture in about 300 ..mu..seconds is disclosed. The ball shutter containing an aperture through which light, etc., passes, is closed by firing a detonator which propels a projectile for rotating the ball shutter, thereby blocking passage through the aperture.
Date: May 14, 1981
Creator: McWilliams, R. A. & Von Holle, W. G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Reactivation of the Shock-Tunnel Facility at Fort Cronkhite. Final report

Description: This final report describes the results of work undertaken to reactivate the Shock Tunnel Facility at Battery Townsley, Fort Cronkhite, Marin County, California. The facility has been reactivated and can not be utilized for blast testing. The major emphasis will be testing of concepts pertaining to programs of interest to the Federal Emergency Management Agency (FEMA) and in particular to civil defense oriented research. However, a wide variety of testing requirements can be accommodated. For e… more
Date: May 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Numerical and experimental investigation of simulated explosions inside a flow network

Description: The results of a numerical and an experimental study of a flow network subjected to a simulated explosion are presented. The numerical simulation uses a computer code called EVENT that predicts the response of a system under gas-dynamic stress conditions. The experiment uses a real flow system that is injected with a high-pressure gas. The results from these two are compared using a flow parameter such as pressure. We conclude that the numerical calculation matches the results of the experiment… more
Date: May 1, 1982
Creator: Tang, P. K.; Gregory, W. S. & Ricketts, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Operations plan for the Regional Seismic Test Network

Description: The Regional Seismic Test Network program was established to provide a capability for detection of extremely sensitive earth movements. Seismic signals from both natural and man-made earth motions will be analyzed with the ultimate objective of accurately locating underground nuclear explosions. The Sandia National Laboratories, Albuquerque, has designed an unattended seismic station capable of recording seismic information received at the location of the seismometers installed as part of that … more
Date: May 15, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[News Script: News]

Description: Photocopy of a script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date: May 6, 1969, 6:30 a.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

Wire-rope emplacement of diagnostics systems

Description: The study reported here was initiated to determine if, with the Cable Downhole System (CDS) currently under development, there is an advantage to using continuous wire rope to lower the emplacement package to the bottom of the hole. A baseline design using two wire ropes as well as several alternatives are discussed in this report. It was concluded that the advantages of the wire-rope emplacement system do not justify the cost of converting to such a system, especially for LLNL's maximum emplac… more
Date: May 7, 1982
Creator: Burden, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geology of the U12n. 02 (Midi Mist) drift, and postshot observations, Rainier Mesa, Area 12, Nevada Test Site

Description: Mining of the Ul2n.02 drift for the Midi Mist event started on December 31, 1965, in Rainier Mesa, Nevada Test Site, and was completed on December 30, 1966. The drift was mined along a bearing of S. 65/sup 0/ W. at an altitude of 1,850.2 m (6,070.2 ft) to a length of 643 m (2,109 ft). The drift lies in tunnel bed 4 and penetrates stratigraphically up the section through sub-units 4AB, 4CD, 4E, 4F, 4G, 4H, and 4J, all of Tertiary age. Two faults mapped at the surface of the mesa were identified … more
Date: May 1, 1980
Creator: Ege, J R; Danilchik, W & Feazel, C T
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quantification of neptunium by isotope dilution mass spectrometry

Description: A surface ionization-diffusion-type ionization source that uses a rhenium filament overplated with platinum has been developed and optimized for 0.1-ng neptunium samples. This source is capable of measuring the neptunium content of nuclear-test-debris samples to 0.15% precision at the 95% confidence level. 14 refs., 3 figs., 3 tabs.
Date: May 1, 1986
Creator: Efurd, D. W.; Drake, J.; Roensch, F. R.; Cappis, J. H. & Perrin, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Resurrection of neutrinos as dark matter

Description: It is shown that new observations of large scale structure in the universe (voids, foam, and large-scale velocity fields) are best understood if the dominant matter of the universe is in the form of massive (9eV less than or equal to m/sub nu/ less than or equal to 35 eV) neutrinos. Cold dark matter, even with biasing, seems unable to duplicate the combination of these observations (although a fine-tuned loophole with cold matter and percolated explosions may also marginally work.) The previous… more
Date: May 1, 1986
Creator: Schramm, D. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[News Script: Fire]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date: May 27, 1972, 6:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

Seismic Verification of Nuclear Testing Treaties

Description: This report addresses the issues of detection, identification, yield estimation, and evasion to arrive at answers to the two critical questions: 1) Down to what size explosion can underground testing be seismically monitored with high confidence? 2) How accurately can the yields of underground explosions be measured?
Date: May 1988
Creator: United States. Congress. Office of Technology Assessment.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Application of the TraPPE force field to predicting isothermal pressure-volume curves at high pressures and high temperatures

Description: Knowledge of the thermophysical properties of materials at extreme pressure and temperature conditions is essential for improving our understanding of many planetary and detonation processes. Significant gaps in what is known about the behavior of materials at high density and high temperature exist, largely due to the limitations and dangers of performing experiments at the necessary extreme conditions. Modeling these systems through the use of equations of state and particle-based simulation … more
Date: May 19, 2006
Creator: Eggimann, B L; Siepmann, J I & Fried, L E
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Turbulence-Flame Interactions in Type Ia Supernovae

Description: The large range of time and length scales involved in type Ia supernovae (SN Ia) requires the use of flame models. As a prelude to exploring various options for flame models, we consider, in this paper, high-resolution three-dimensional simulations of the small-scale dynamics of nuclear flames in the supernova environment in which the details of the flame structure are fully resolved. The range of densities examined, 1 to 8 x 107 g cm-3, spans the transition from the laminar flamelet regime to … more
Date: May 27, 2008
Creator: Aspden, Andrew J.; Bell, John B.; Day, Marc S.; Woosley, Stan E. & Zingale, Mike
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Diversity of Decline-Rate-Corrected Type 1a Supernova Rise times:One Mode or Two?

Description: B-band light-curve rise times for eight unusually well-observed nearby Type Ia supernova (SNe) are fitted by a newly developed template-building algorithm, using light-curve functions that are smooth, flexible, and free of potential bias from externally derived templates and other prior assumptions. From the available literature, photometric BVRI data collected over many months, including the earliest points, are reconciled, combined, and fitted to a unique time of explosion for each SN. On ave… more
Date: May 1, 2007
Creator: Strovink, Mark
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Measurement and modeling of energetic-material mass transfer to soil-pore water - Project CP-1227 final technical report.

Description: Military test and training ranges operate with live-fire engagements to provide realism important to the maintenance of key tactical skills. Ordnance detonations during these operations typically produce minute residues of parent explosive chemical compounds. Occasional low-order detonations also disperse solid-phase energetic material onto the surface soil. These detonation remnants are implicated in chemical contamination impacts to groundwater on a limited set of ranges where environmental c… more
Date: May 1, 2006
Creator: Stein, Joshua S.; Sallaberry, Cedric M.; Webb, Stephen Walter; Phelan, James M. & Hadgu, Teklu
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

BREN Tower: A Monument to the Material Culture of Radiation Dosimetry Research

Description: With a height of more than 1,500 feet, the BREN (Bare Reactor Experiment, Nevada) Tower dominates the surrounding desert landscape of the Nevada Test Site. Associated with the nuclear research and atmospheric testing programs carried out during the 1950s and 1960s, the tower was a vital component in a series of experiments aimed at characterizing radiation fields from nuclear detonations. Research programs conducted at the tower provided the data for the baseline dosimetry studies crucial to de… more
Date: May 30, 2008
Creator: Edwards, Susan
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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