This map displays interpreted structural and stratigraphic relations among the Paleozoic and older rocks of the Nevada Test Site region beneath the Miocene volcanic rocks and younger alluvium in the Yucca Flat and northern Frenchman Flat basins. These interpretations are based on a comprehensive examination and review of data for more than 77 drillholes that penetrated part of the pre-Tertiary basement beneath these post-middle Miocene structural basins. Biostratigraphic data from conodont fossils were newly obtained for 31 of these holes, and a thorough review of all prior microfossil paleontologic data is incorporated in the analysis. Subsurface relationships are interpreted in light of a revised regional geologic framework synthesized from detailed geologic mapping in the ranges surrounding Yucca Flat, from comprehensive stratigraphic studies in the region, and from additional detailed field studies on and around the Nevada Test Site. All available data indicate the subsurface geology of Yucca Flat is considerably more complicated than previous interpretations have suggested. The western part of the basin, in particular, is underlain by relics of the eastward-vergent Belted Range thrust system that are folded back toward the west and thrust by local, west-vergent contractional structures of the CP thrust system. Field evidence from the ranges …

Portrait of Josie Cantu. She can be seen wearing a sweater. Cantu (’63) was a journalism major from San Antonio and editor for the 1962 Yucca during her junior year. She was tasked with documenting the excitement of the institution’s “University Year.” Cantu and her team of Yucca staff diligently recorded all of the momentous firsts; including the largest fall enrollment of 8,638 students, the establishment of one-way streets in downtown Denton, the use of student pictures on ID cards, and the first Big-Little Sister Skit Night.

Portrait of Josie Cantu. She can be seen wearing a sweater. Cantu (’63) was a journalism major from San Antonio and editor for the 1962 Yucca during her junior year. She was tasked with documenting the excitement of the institution’s “University Year.” Cantu and her team of Yucca staff diligently recorded all of the momentous firsts; including the largest fall enrollment of 8,638 students, the establishment of one-way streets in downtown Denton, the use of student pictures on ID cards, and the first Big-Little Sister Skit Night.

Profile of Josie Cantu. She can be seen wearing a sweater. Cantu (’63) was a journalism major from San Antonio and editor for the 1962 Yucca during her junior year. She was tasked with documenting the excitement of the institution’s “University Year.” Cantu and her team of Yucca staff diligently recorded all of the momentous firsts; including the largest fall enrollment of 8,638 students, the establishment of one-way streets in downtown Denton, the use of student pictures on ID cards, and the first Big-Little Sister Skit Night.

Profile of Josie Cantu. She can be seen wearing a sweater. Cantu (’63) was a journalism major from San Antonio and editor for the 1962 Yucca during her junior year. She was tasked with documenting the excitement of the institution’s “University Year.” Cantu and her team of Yucca staff diligently recorded all of the momentous firsts; including the largest fall enrollment of 8,638 students, the establishment of one-way streets in downtown Denton, the use of student pictures on ID cards, and the first Big-Little Sister Skit Night.

Photograph of Josie Cantu sitting on a bench. She can be seen in a long over coat and looking directly at the camera. Cantu (’63) was a journalism major from San Antonio and editor for the 1962 Yucca during her junior year. She was tasked with documenting the excitement of the institution’s “University Year.” Cantu and her team of Yucca staff diligently recorded all of the momentous firsts; including the largest fall enrollment of 8,638 students, the establishment of one-way streets in downtown Denton, the use of student pictures on ID cards, and the first Big-Little Sister Skit Night.

Photograph of Josie Cantu sitting on a bench. She can be seen a long over coat and looking directly at the camera. Cantu (’63) was a journalism major from San Antonio and editor for the 1962 Yucca during her junior year. She was tasked with documenting the excitement of the institution’s “University Year.” Cantu and her team of Yucca staff diligently recorded all of the momentous firsts; including the largest fall enrollment of 8,638 students, the establishment of one-way streets in downtown Denton, the use of student pictures on ID cards, and the first Big-Little Sister Skit Night.

Semiweekly student newspaper from the North Texas State College in Denton, Texas that includes local, state, and campus news along with advertising.

Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.

Semiweekly student newspaper from the North Texas State College in Denton, Texas that includes local, state, and campus news along with advertising.

Semiweekly student newspaper from the North Texas State College in Denton, Texas that includes local, state, and campus news along with advertising.

Semiweekly student newspaper from the North Texas State College in Denton, Texas that includes local, state, and campus news along with advertising.

The purpose of this analysis is to calculate the number densities and isotopic weight percentages of the standard materials to be used in the neutronics (criticality and radiation shielding) evaluations by the Waste Package Development Department. The objective of this analysis is to provide material number density information which can be referenced by future neutronics design analyses, such as for those supporting the Conceptual Design Report.

Weekly newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.

The results of experiments performed by John K. Bates et al. on the reaction of nuclear waste glass with a gamma-irradiated 90{sup 0}C aqueous solution were analyzed using theory developed from past research in radiation chemistry. The aqueous solution they used is similar to what would be expected in a water-saturated environment in a nuclear waste repository in tuff. The purpose of our study was to develop an understanding of the radiation-chemical processes that occurred in the Bates et al. experiments so the results could be applied to the design and performance analysis of a proposed repository in unsaturated tuff in Nevada. For the Bates et al. experiments at the highest dose (269 Mrad), which originally contained about 16 ml of "equilibrated" water taken from Nevada Test Site Well J-13 and 5.4 ml of air, we predicted that water decomposition to H{sub 2} and O{sub 2} would produce a pressure increase of at least 1.0 MPa at 20{sup 0}C. We also predicted that nitrogen fixation from the air would occur, producing an increase of 1.6 x 10{sup -4} M in total fixed nitrogen concentration in solution. In addition, an equimolar production of H{sup +} would occur, which would be buffered …

Weekly newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.

Stress corrosion cracking (SCC) in the Yucca Mountain waste package closure welds is believed to be the greatest threat to long-term containment. Use of stress mitigation to eliminate tensile stresses resulting from welding can prevent SCC. A laser technology with sufficient average power to achieve high throughput has been developed and commercially deployed with high peak power and sufficiently high average power to be an effective laser peening system. An appropriately applied version of this process could be applied to eliminate SCC in the waste package closure welds.

A multiphase waste form referred to as the ceramic waste form (CWF) will be used to immobilize radioactively contaminated salt wastes recovered after the electrometallurgical treatment of spent sodium-bonded nuclear fuel. The CWF is made by first occluding salt in zeolite and then encapsulating the zeolite in a borosilicate binder glass. A variety of surrogate CWF materials were made using pressureless consolidation (PC) methods for comparison with CWF consolidated using a hot isostatic press (HIP) method and to study the effects of glass/zeolite batching ratio and processing conditions on the physical and chemical properties of the resulting materials. The data summarized in this report will also be used to support qualification of the PC CWF for disposal in the proposed federal high-level radioactive waste repository at Yucca Mountain. The phase composition and microstructure of HIP CWF and PC CWF are essentially identical: both are composed of about 70% sodalite, 25% binder glass, and a 5% total of inclusion phases (halite, nepheline, and various oxides and silicates). The primary difference is that PC CWF materials have higher porosities than HIP CWFs. The product consistency test (PCT) that was initially developed to monitor homogeneous glass waste forms was used to measure the …

The Uranium in Soils Integrated Demonstration requested an assessment of soil excavation needs relative to soil remediation. The following list identifies the DOE sites assessed: Mound Laboratory, Paducah Gaseous Diffusion Plant, Portsmouth Gaseous Diffusion Plant, Nevada Test Site, Lawrence Livermore National Laboratory, Rocky Flats Plant, Los Alamos National Laboratory, Sandia National Laboratory, Idaho National Engineering Laboratory, Hanford Site, and Fernald Site. The reviewed sites fall into one or more of the following three categories: production, EPA National Priorities List, or CERCLA (superfund) designation. Only three of the sites appear to have the need for a remotely operated excavator rope. Hanford and Idaho Falls have areas of high-level radioactive contamination either buried or in/under buildings. The Fernald site has a need for remote operated equipment of different types. It is their feeling that remote equipment can be used to remove the health dangers to humans by removing them from the area. Most interviewees stated that characterization technologies needs are more immediate concern over excavation. In addition, the sites do not have similar geographic conditions which would aid in the development of a generic precision excavator. The sites visited were not ready to utilize or provide the required design information necessary to …

Semiweekly student newspaper from the North Texas State College in Denton, Texas that includes local, state, and campus news along with advertising.

Weekly student newspaper from Texas Western College in El Paso, Texas that includes campus news and information along with advertising.

Weekly newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.