This report was compiled to distribute for Congressional use concerning the top 50 companies in the United States at the time of writing and their economic information.

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This report analyzes the provisions of the Better Communities Act which provided federal funds to local and state governments for use in community development projects.

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The authors describe a state-of-the-art automatic control system as it is used to control a manufacturing process in an explosive environment. Compact, explosion proof sensing devices and a custom designed interface to a controller input are discussed.

A device for automatic dispensing of precise amounts of finely divided solids has been developed. Precision is a function of dispensing time. Smaller than gram quantities may be dispensed at a rate of about 1/3 g/min with a precision corresponding to a weight range of about 0.001 g for a series. The process consists in moving the material with the effect of the vibratory motion of a miniature air-powered vibrator. Operation is automatically controlled by the electronic system of the weighing unit interfaced to the pneumatic dispensing device via a combination fluidic and pneumatic control system.

Abstracts: The largest ground-water supplies from the 150 to 450-foot thick carbonate-rock aquifer in southwest Ohio are available in a 2,800 square-mile area on the crest and eastern flank of the Cincinnati arch. Well production in the high-yield area is mainly from the Newburg zone, a permeable stratum in the lower part of the Bass Island group. A structure contour map on the top of the Lockport Dolomite shows that the Newburg zone conforms to the configuration of the Cincinnati arch. The chemical quality of the water in the consolidated-rock aquifers is intimately related to the regional flow system, and undergoes a progressive change from a calcium bicarbonate-type in recharge areas to a calcium sulfate-type in areas of natural discharge.

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Research programs, training and educational activities, and operations aspects for the Penn State Breazeale Reactor during July 1, 1972 to June 30, 1973 are reviewed. Personnel and administrative activities for the reactor facility are described. (DCC)

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Free-free absorption is one of the dominant mechanisms governing the absorption of laser radiation by materials heated to temperatures of 0.5 to 2.0 eV. This report describes the theory, the listing, and the running instructions for a code which computes the free-- free Gaunt factor, arising from any given ionic or atomic potential. The calculation makes use of partial wave expansion. The code is capable of computing up to 95 partial waves. The code computes the necessary low energy wave functions by making use of the Green's function solution rather than by directly integrating Schroedinger's equation. In addition to the Gaunt factor, the code also provides the amplitude and the phase shift of every partial wave considered. (auth)

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Analytic and Monte Carlo calculations of the Bramblett- Czirr /sup 235/U transmission experiment STANuc!. Sci. Eng. 35, 350-357 (1969)! were performed. The numbcr of fissions from the uncollided flux could be calculated as a function of depth. The results of experiment and Monte Carlo calculations are tabulated and plotted; fission and total cross sections for /sup 235/U are shown. In view of the agreement between the analytic and Monte Carlo calculations, it appeared that the ENDF/B-III cross sections were inadequate to calculate the Czirr-- Bramblett experiment. (3 figures, 2 tables) (RWR)

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The effects of gas mixture and chamber thickness on the gain and pulse shape of a multiwire proportional counter with delay line readout were studied. The primary concern was with optimizing the position accuracy for high-energy particle physics applications. The best results, both from the point of view of chamber gain and the risetime and uniformity of the delay line pulses were obtained with a 4 mm gap chamber run on a mixture of 30% carbon dioxide and 70% argon. It was found necessary to bias the outer grids negative with respect to ground to prevent electrons in the drift regions from migrating into the multiplication region and spoiling the delay-line pulse shape. (auth)