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Ancient Lavas in Shenandoah National Park Near Luray, Virginia

Description: Abstract: In the Blue Ridge Province of northern Virginia, Maryland, and southern Pennsylvania, Lower Cambrian beds are underlain by a thick sequence of greenstone and interbedded sedimentary rocks known as the Catoctin Formation. An area near Luray, Va., was studied to determine the thickness of the formation, its relationship to overlying and underlying rocks, and the original nature of the lavas from which the Catoctin greenstone was derived. There the Catoctin Formation lies unconformably on granitic rocks. Its basal sedimentary layer ranges from a few inches to 150 feet in thickness and contains pebbles of underlying basement rocks. The erosion surface beneath the Catoctin is irregular, and in several places, hills as much as 1,000 feet high were buried beneath the Catoctin lavas. No important time break is indicated between the deposition of the Catoctin Formation and the overlying Cambrian sediments. The original Catoctin lavas were basaltic and were probably normal plateau basalts. Columnar joints, amygdules, sedimentary dikes, flow breccias, low-dipping primary joints, and other primary structures are well preserved.
Date: 1969
Creator: Reed, John Calvin, Jr.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Communities of Over 1000 Population With Water Containing in Excess of 1000 ppm of Total Dissolved Solids

Description: Report containing lists of communities within the United States that have a population over 1,000 and that have water supplies that contain total dissolved solids over 1,000 parts per million. These are listed separately by state and resource region.
Date: October 1969
Creator: Patterson, W. L. & Banker, R. F.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Development of Direct Contact Condensation Multistage Flash Distillation Process: Phase 1

Description: Report investigating the feasibility of the Atomics International Direct Contact Condensation Multistage Flash (DCC-MSF) Distillation process using "analytical and experimental studies on a direct contact condensation module and a plastic film heat exchanger. (p. iii)
Date: September 1969
Creator: Kohl, A. L.; Shimazaki, T. T.; Wetch, J. R. & Bienvenue, L. L.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Development of Water Purification Systems Based on Reverse Osmosis

Description: Report demonstrating the concept of a small and disposable reverse-osmosis cartridge. Research includes "1) a search for suitable membrane supporting structures and materials during which the hydrodynamic characteristics of a number of potential materials were evaluated, 2) the evaluation of reverse-osmosis membranes cast directly on support materials and on reinforcing materials, and 3) the design, fabrication and testing of a small reverse-osmosis cartridge" (p. 1).
Date: April 1969
Creator: Ellington, R. C.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Dynamics of Wheeled Vehicles, Report 1: A Mathematical Model for the Traversal of Rigid Obstacles by a Pneumatic Tire, Appendix B: Digital Implementation of Segmented Tire Model

Description: Summary: "This appendix presents the procedures for digital implementation of the segmented tire model, developed in the basic report for an analog computer. Two procedures are required: (a) determination of the segment spring coefficient from measured load-deflection test results, and (b) computation of the resultant force vector transmitted to the axle. Digital programs for both procedures were written in Fortran IV for a GE-420 system, and are included" (p. xi).
Date: August 1969
Creator: Murphy, N. R., Jr.
Item Type: Report
Partner: UNT Libraries Government Documents Department

An Evaluation of Advanced Converter Reactors

Description: From foreword: This report is an overall assessment of the technical status and economic potential of advanced converters and breeders, the role of thorium, various reactor fuel cycles, and a systems analysis of the future nuclear-electric power complex.
Date: April 1969
Creator: Advanced Converter Task Force
Item Type: Report
Partner: UNT Libraries Government Documents Department

An Evaluation of Alternate Coolant Fast Breeder Reactors

Description: From foreword: This report evaluates two types of reactors and provides a basis for their consideration in the assessment of the overall program of the AEC.
Date: April 1969
Creator: United States. Alternate Coolant Task Force.
Item Type: Report
Partner: UNT Libraries Government Documents Department

An Evaluation of Steam-Cooled Fast Breeder Reactors

Description: From foreword: This report evaluates one family of reactors in the reactor development program of the AEC, an provides a basis for their consideration in the assessment of the overall program.
Date: April 1969
Creator: Oak Ridge National Laboratory
Item Type: Report
Partner: UNT Libraries Government Documents Department

Expedient Reinforcement of Concrete for Use in Southeast Asia: Report 1: Preliminary Tests of Bamboo

Description: "This report summarizes the preliminary results of a current U. S. Army Engineer Waterways Experiment Station (WES) study of the feasibility of using bamboo as an expedient reinforcement for temporary, reinforced concrete structures. The report contains an extensive review of the literature, a description of the test procedures, results of an investigation of the most important engineering properties of bamboo, descriptions of tests of 26 bamboo-reinforced structural elements (20 simply supported beams with 6-ft (1.83-m) spans, and 6 simply supported two-way slabs of varying length, width, and depth), and conclusions and tentative recommendations for the design of bamboo-reinforced structures" (p. xiii).
Date: 1969
Creator: Cox, F. B. & Geymayer, H. G.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Experimental Program to Improve the VTE Distillation Process

Description: Report concerning research for the purpose of designing a fluted tube in downflow Vertical Tube Evaporator (VTE) operation. Liquid flowrate, salinity, and temperature are studied.
Date: September 1969
Creator: Dukler, A. E.; Elliott, L. C. & Grana, C. V.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Field Operation of a Mobile Reverse Osmosis Pilot Plant

Description: Report that "covers the field operation of a 36-in. diameter pressure-vessel-type reverse osmosis system over a seven month period and the post-operational inspection of the unit and associated hardware" - (p. 1).
Date: May 1969
Creator: Watson, E. R.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Fuels and Materials Development Program Quarterly Progress Report, September 30, 1968

Description: From Foreword: "Report containing information about ongoing research and development taking place in the Oak Ridge National Laboratory's Fuels and Materials Development Program. This includes a series of test reports covering such subjects as reactor fuels, the development of nitride fuels, and the effects of radiation on structural materials."
Date: February 1969
Creator: Oak Ridge National Laboratory. Metals and Ceramics Division.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Gold Veins Near Great Falls, Maryland

Description: From abstract: Small deposits of native gold are present along an anastomosing system of quartz veins and shear zones just east of Great Falls, Montgomery County, Md. The deposits were discovered in 1861 and were worked sporadically until 1951, yielding more than 5,000 ounces of gold. The vein system and the principal veins within it strike a few degrees west of north, at an appreciable angle to foliation and fold axial planes in enclosing rocks of the Wissahickon Formation of late Precambrian (?) age. The veins cut granitic rocks of Devonian or pre-Devonian age and may be as young as Triassic. Further development of the deposits is unlikely under present economic conditions because of their generally low gold content and because much of the vein system lies on park property, but study of the Great Falls vein system may be useful in the search for similar deposits elsewhere in the Appalachian Piedmont.
Date: 1969
Creator: Reed, John Calvin, Jr. & Reed, John Calvin
Item Type: Report
Partner: UNT Libraries Government Documents Department

Health Physics Division Annual Progress Report, July 31, 1969

Description: From summary: "Report documenting research and developments made by the Health Physics Division of the Oak Ridge National Laboratory."
Date: October 1969
Creator: Oak Ridge National Laboratory. Health Physics Division.
Item Type: Report
Partner: UNT Libraries Government Documents Department

An Introduction to the Description and Evaluation of Microwave Systems Using Terminal Invariant Parameters

Description: Report presenting the technical background and basis for a new method of evaluating certain performance parameters which are common to all microwave systems. A unique feature of the new measurement concept is its elimination of the precision waveguide and connector requirements for an important class of measurement problems.
Date: October 1969
Creator: Engren, Glenn F.
Item Type: Report
Partner: UNT Libraries Government Documents Department