Photograph of the Dura Steel exhibit at the OLA Convention, Oklahoma City, OK. Photo by Johnny Melton, Oklahoma City, OK, for the Oklahoma Lumberman's Association Acct., July 15, 1978.

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

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

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

On 1 August 1975 under Department of Energy Contract EN-77-C-02-4299, Sundstrand Energy Systems commenced development of a Kilowatt Isotope Power System (KIPS) directed toward satisfying the higher power requirements of satellites of the 1980s and beyond. The KIPS is a /sup 238/PuO/sub 2/ fueled organic Rankine cycle turbine power system which will provide design output power in the range of 500 to 2000 W/sub (e)/ with a minimum of system changes. The principal objectives of the Phase 1 development effort were to: conceptually design a flight system; design a Ground Demonstration System (GDS) that is prototypic of the flight system in order to prove the feasibility of the flight system design; fabricate and assemble the GDS; and performance and endurance test the GDS using electric heaters in lieu of the isotope heat source. Results of the work performed under the Phase 1 contract to 1 July 1978 are presented.

Results of research to develop a plan for the long-term environmental assessment of geopressured/geothermal resource development in the Louisiana Gulf Coast region are reported. An overall view of the environmental issues facing decision-makers in the area of geopressured resource development is presented, along with a plan for monitoring potential environmental impacts. Separate assessments and plans are presented for geological effects, air and water quality, ecosystem quality, and socioeconomic and cultural considerations. (JGB)

Methods of producing low-cost silicon sheet for solar cells are under active development. In the crystal-growing processes a refractory crucible is required to hold the molten silicon, while in the ribbon processes an additional refractory shaping die is needed to enable silicon ribbon to be produced. In several ribbon processes the high-temperature materials are a limiting factor in the development of the technique. The objective of this study is to develop and evaluate refractory die and container materials. Mass spectrometric studies of molten silicon in contact with silicon nitride and silicon carbide show that the vapor pressure of silicon is lower over these materials than over the oxides (beryllium oxide, alumina, and silica) studied previously. Measured carbon and nitrogen contents are 6.4 x 10/sup 19/ atoms/cm/sup 3/ and 3.3 x 10/sup 18/ atoms/cm/sup 3/, respectively. The fabrication of O' and ..beta..' Sialons was found to be strongly dependent upon the nature of the silicon nitride powder. A modified hot pressing procedure was adopted to allow volatilization of chlorine-containing species from the SN402 grade powder. ..beta..' Sialon of composition X = 1 appears to offer some promise as a candidate die material, but materials containing a higher alumina composition (X = …

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

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

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

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

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Alvin V. Shoemaker, President, Blyth Eastman Dillon & Company, Inc."

This report describes work done in Fiscal Year 1977 by the Fusion Reactor Studies Group of LLL on the conceptual design of a 1000-MW(e) Tandem Mirror Reactor (TMR). The high Q (defined as the ratio of fusion power to injection power) predicted for the TMR (approximately 5) reduces the recirculating power to a nondominant problem and results in an attractive mirror fusion power plant. The fusion plasma of the TMR is contained in the 100-m-long central cell where the magnetic field strength is a modest 2 T. The blanket for neutron energy recovery and tritium breeding is cylindrical and, along with the solenoidal magnet, is divided into 3-m-long modules to facilitate maintenance. The central cell is fueled (but not heated) by the injection of low-energy neutral beams near its ends. Thus, the central cell is simple and of low technology. The end-cell plasmas must be of high density and high energy in order to plug and heat (via the electrons) the central-cell plasma. The present conceptual design uses 1.2-MeV neutral-beam injection for the end plugs and a cryogenic-aluminum, Yin-Yang magnet that produces an incremental field of about 1 T over a field of 16 T produced by a pair of …

The main emphasis in Station No. 1 during this quarter was on the production and evaluation of a series of baseline ''clean runs''. These were designed to demonstrate that this furnace, when operating without any stainless steel parts in the interior, could produce material of a chemical quality sufficient to prepare solar cells of approximately 10% efficiency. However, interpretation of the solar cell results was complicated by the observation, that all EFG ribbon when grown using carbon crucibles has a reduced solar cell performance. It was then hypothesized that oxygen could act as an internal gettering mechanism for transition metal impurities, thus reducing their deleterious effects on the minority carrier lifetime in EFG silicon. Hence, experiments were undertaken to add oxygen to the melts contained in carbon crucibles. These experiments revealed that even small traces of oxygen, when introduced in the gas phase above the melt and near the meniscus, can significantly destabilize growth and may also generate excess silicon-carbide at the meniscus and thus cause an excessive number of ''freezes''. If this observation can be definitely confirmed, it is obviously very important since so far it is believed that all SiC occurring on the ribobns is an inevitable consequence …

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Photograph of the exterior of a building identified as Port Arthur City Hall at 444 Fourth Street. The building is several stories high. There is an awning extending over a driveway on one side with a car underneath it. In the foreground, there is a yard with trees, shrubs, and park lights. In the bottom right corner of the photograph, "Watkins Studio" is embossed.

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