An empirally derived mathematical model was developed to calculate the pressure and temperature history during condensation of water vapor in an underground-nuclear-explosion cavity. The condensation process is non-isothermal. Use has been made of the Clapeyron-Clausius equation as a basis for development of the model. Analytic fits to the vapor pressure and the latent heat of vaporization for saturated-water vapor, together with an estimated value for the heat-transfer coefficient, have been used to describe the phenomena. The calculated pressure-history during condensation has been determined to be exponential, with a time constant somewhat less than that observed during the cooling of the superheated steam from the explosion. The behavior of the calculated condensation-pressure compares well with the observed-pressure record (until just prior to cavity collapse) for a particular nuclear-detonation event for which data is available. (auth)

The questions asked and answered include: Why was the program renamed from PNE (Peaceful Nuclear Explosives) to NEA? Why are storage cavities needed? Why can`t existing caves and mines be used? Isn`t a mined cavity safer for radioactive disposal? Why can`t one tolerate asymmetry between the US and USSR PNE capability? Why do we need PNE execution capability to support verification capability? Why shouldn`t the money go directly to verification? What is the priority of PNE research compared to other energy technology research? What is the US obligation under Article V of the NPT if it is determined that PNE`s are not worthwhile? What new information is available which shows that PNE`s will be politically acceptable? How much has been spent to develop PNE`s to date? What viable technology has resulted? The remainder of the paper discusses research programs being carried out on nuclear explosion technology and one technology that has resulted from the PNE program, namely, stimulation of oil and gas extraction.

To provide the Astronuclear Laboratory personnel with a background for understanding the newer fields of digital systems, data-processing systems, pulse communications and telemetering, a brief lecture was given on March 30, 1962 and was supplemented by WANL-TR-156, R. A. Clark, et al. It was requested that the lecture notes also be published to be available as a reference. The purpose of these notes is to provide description of some basic type circuits and techniques which was common to the field. It begins with basic descriptions and works up to complete systems. The notes will be published in separate sections whenever time allows complete write-up.

None

This 1974 annual report presents a brief overview of work being performed in the following areas at the Mound Plant: explosive operations, nuclear operations, analytical developments, environmental control and waste management, computer programming, and supporting activities.

Monthly report documenting Imperial Sugar operational expenses for the year, broken down by actual sales and production, with estimated operational numbers for the remainder of the year.

Report on irrigation in Texas, including summaries, tables, crop irrigation, charts, precipitation, and more.