The authors examine the transient residual thermal signal resulting from an underground nuclear test (buried below the water table) and its potential to affect local groundwater flow and radionuclide migration in a saturated, fractured, volcanic aquifer system. Thermal profiles measured in a drillback hole between 154 days and 6.5 years after the test have been used to calibrate a non-isothermal model of fluid flow. In this process, they have estimated the magnitude and relative changes in permeability, porosity and fracture density between different portions of the disturbed and undisturbed geologic medium surrounding the test location. The relative impacts of buoyancy forces (arising from the thermal residual of the test and the background geothermal gradient) and horizontal pressure gradients on the post-test flow system are better understood. A transient particle/streamline model of contaminant transport is used to visualize streamlines and streaklines of the flow field and to examine the migration of non-reactive radionuclides. Sensitivity analyses are performed to understand the effects of local and sub-regional geologic features, and the effects of fractured zones on the movement of groundwater and thermal energy. Conclusions regarding the overall effect of the thermal regime on the residence times and fluxes of radionuclides out of the …

The general philosophy of this work is to develop an integrated set of decontamination methods and tools that will work on the major CBW threat agents. The work includes some near term techniques that can be demonstrated within a year and implemented soon thereafter as well as longer term research objectives. It is recognized that there is a balance between somewhat less effective methods which can be demonstrated quickly and more effective ones which may require a much longer time to fruition. The optimum goal of this study is to find a single decontamination system for chemical and biological agents which is non-toxic, non-corrosive, and easily deployable. One of the goals is to have decontamination systems that might be used by first responders as well as more complete systems to be used by specialized decontamination teams. Therefore, the overall project goal is to develop better decontamination methods that can be quickly implemented by these organizations. This includes early demonstrations and field work with companies or other government agencies who can identify implementation concerns and needs. The approach taken in this work is somewhat different than the standard military approach to decontamination. In a battlefield scenario, it is critical to decontaminate …

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Funeral program for Nellie Sewell Warren, born December 22, 1908. The funeral was held December 16, 2000 at the St. Paul United Methodist Church, officiated by Rev. Terrence Hayes. Funeral arrangements were made through Sutton-Sutton Mortuary, Inc., and she was buried in the Sunset Memorial Park in San Antonio, Texas.

Lawrence Livermore National Laboratory (LLNL) has developed a new laser-based machining technology that utilizes ultrashort-pulse (0.1-1.0 picosecond) lasers to cut materials with negligible generation of heat or shock. The ultrashort pulse laser, developed for the Department of Energy (Defense Programs) has numerous applications in operations requiring high precision machining. Due to the extremely short duration of the laser pulse, material removal occurs by a different physical mechanism than in conventional machining. As a result, any material (e.g., hardened steel, ceramics, diamond, silicon, etc.) can be machined with minimal heat-affected zone or damage to the remaining material. As a result of the threshold nature of the process, shaped holes, cuts, and textures can be achieved with simple beam shaping. Conventional laser tools used for cutting or high-precision machining (e.g., sculpting, drilling) use long laser pulses (10{sup -8} to over 1 sec) to remove material by heating it to the melting or boiling point (Figure 1.1a). This often results in significant damage to the remaining material and produces considerable slag (Figure 1.2a). With ultrashort laser pulses, material is removed by ionizing the material (Figure 1.1b). The ionized plasma expands away from the surface too quickly for significant energy transfer to the remaining …

The National Museum of the Pacific War presents an interview with Joe Langdell. Langdell joined the Navy in late 1940. He completed Midshipman School. He served aboard USS Arizona (BB-39). They were moored along Ford Island when the Japanese attacked Pearl Harbor. He participated in recovery and clean up after the attack. In early 1942, Langdell was reassigned to the USS Frazier (DD-607). They guarded transports during the Guadalcanal Campaign and Aleutian Islands Campaign. After an operation in early 1944, he remained in the US, was promoted to lieutenant commander, and provided administrative assistance to an admiral.

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

The National Museum of the Pacific War presents an interview with Joe Langdell. Langdell joined the Navy in late 1940. He completed Midshipman School. He served aboard USS Arizona (BB-39). They were moored along Ford Island when the Japanese attacked Pearl Harbor. He participated in recovery and clean up after the attack. In early 1942, Langdell was reassigned to the USS Frazier (DD-607). They guarded transports during the Guadalcanal Campaign and Aleutian Islands Campaign. After an operation in early 1944, he remained in the US, was promoted to lieutenant commander, and provided administrative assistance to an admiral.

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.

Video recording of the Fall Commencement December 16, 2000.

Video recording from The Black Academy of Arts and Letters recorded during the 8th annual Christmas and Kwanzaa concert held on the Naomi Bruton main stage on December 16th, 2000. The footage shows Curtis King giving the opening remarks followed by performances by a youth choir and wind band. The students in the performance all belong to various Dallas Independent School District high schools

Semiweekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.