UNT Libraries Government Documents Department - 34 Matching Results

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Hydrogenation of Coal and Tar

Description: From Abstract: "This bulletin traces the development of high-pressure, coal and tar hydrogenation technology, based on intensive review of the pertinent literature. The bulletin was written as a part of the Bureau of Mines research program on synthetic liquid fuels. It covers the history and economics of the process; the chemical aspect of hydrogenation of coal, tar, and middle oil; the engineer aspect of converting coal and tar to liquid fuels, principally gasoline; and the equipment of the pr… more
Date: 1968
Creator: Wu, W. R. K. & Storch, H. H.
Item Type: Refine your search to only Report
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Freon-12 Hydrate Desalting Process

Description: Report that "evaluates an operation program of a hydrate process for the desalination of sea water in a 10,000 GPD plant located at the Office of Saline Water Research and Development Test Station (Wrightsvile Beach Test Facility at Wrightsville Beach, New Carolina) for the period march 1967 through July 1968" (p. i).
Date: August 1968
Creator: Garrison, Kenneth; Slape, R. J. & Snedden, L. L.
Item Type: Refine your search to only Report
open access

Diesel Exhaust Contamination of Tunnel Air

Description: Report issued by the Bureau of Mines on investigations of air contamination in tunnels due to diesel exhaust. Air samples were taken inside tunnels and measured for carbon dioxide, carbon monoxide, and nitrogen oxides. This report includes tables and graphs.
Date: February 1968
Creator: Holtz, John C. & Dalzell, Robert W.
Item Type: Refine your search to only Report
open access

New England Beryllium Investigations

Description: Report issued by the Bureau of mines over studies conducted on beryllium deposits in New England. Evaluations of the deposits are presented and discussed. This report includes tables, maps, illustrations, and photographs.
Date: 1968
Creator: Barton, William R. & Goldsmith, Carl E.
Item Type: Refine your search to only Report
open access

Microfilming Maps of Abandoned Anthracite Mines: Mines in the Wyoming Basin, Northern Anthracite Field

Description: Report issued by the Bureau of Mines discussing a program for microfilming maps of abandoned mines in the Pennsylvania anthracite region. As stated in the introduction, "this report contains a catalog of films covering 68 of the 72 mines in the Wyoming Basin of the Northern anthracite field. Maps of active mines are not included" (p. 4). This report includes tables, and maps.
Date: June 1968
Creator: Eaton, W. L. & Gait, G. B.
Item Type: Refine your search to only Report
open access

Cold-Mold Arc Melting and Casting

Description: Report issued by the U.S. Bureau of Mines providing updates and additional information related to cold-mold arc melting and casting. Abstract: "This bulletin reviews the historical background of the cold-mold arc-melting technology, with specific references to the development that led to homogeneous zirconium ingots. Descriptions are given of modern production arc-furnaces for vacuum melting of both exotic and conventional metals. Besides zirconium, specific data are given for production of … more
Date: 1968
Creator: Beall, Robert A. & Hedges, Joseph Harold
Item Type: Refine your search to only Report
open access

Seven New White-winged Doves from Mexico, Central America, and Southwestern United States

Description: Seven new subspecies of the white-winged dove (Zenaida asiatica) are described. The patterns of these recoveries are an invaluable aid to understanding racial distribution of this species. The extent of migration that breed in Central America is not yet adequately known. The range of the doves extends as far north as the southwestern United States.
Date: May 1968
Creator: Saunders, George B.
Item Type: Refine your search to only Report
open access

Acoustic Flowmeter Prototype Evaluation Tests

Description: Summary: "Prototype tests of an acoustic flowmeter system were made in a 24-ftdiam power penstock at Oahe Dam to evaluate the system prior to permanent installation in the outlet works at Summersville Dam. Comparative discharge measurements included acoustic, penstock pressure-momentum (Gibson), turbine model test ratings, scroll-case pressure differential (Winter-Kennedy flowmeter), and surge tank volume changes. The acoustic flowmeter measurements were very consistent and many of the comparis… more
Date: January 1968
Creator: Pickett, Ellis B.
Item Type: Refine your search to only Report
open access

Geology of the Hot Sulphur Springs quadrangle, Grand County, Colorado

Description: Scope and Purpose of Work: The quadrangle was mapped as part of the U.S. Geological Survey program of classifying and evaluating lands in the Public Domain. Mineral rights for coal had been retained in parts or all of Tps. 2 and 3 N., Rs. 77, 78, and 79 W. These areas are in part underlain by sedimentary rocks of Late Cretaceous(?) and early Tertiary age (Middle Park Formation), and in North Park these rocks are called the Coalmont Formation and contain coal. The chief purpose of the work was t… more
Date: 1968
Creator: Izett, Glen Arthur
Item Type: Refine your search to only Report
open access

A Descriptive Catalog of Selected Aerial Photographs of Geologic Features in the United States

Description: From introduction: The U.S. Geological Survey has selected and assembled sets of photographs that illustrate numerous types of geologic features in the United States. This catalog lists these special sets of photographs that are available for purchase and describes the features illustrated. One reduced photograph from each set is shown on the back pages of this catalog to assist the purchaser in his selection.
Date: 1968
Creator: Geological Survey (U.S.)
Item Type: Refine your search to only Report
open access

Geologic Studies, Project Gnome, Eddy County, New Mexico

Description: From abstract: For Project Gnome, part of the Plowshare Program to develop peaceful uses for nuclear energy, a nuclear device was detonated December 10, 1961, underground in rack salt of the Permian Salado Formation southeast of Carlsbad, New Mexico. The Geological Survey's investigations on behalf of the U.S. Atomic Energy Commission provided basic geologic and geophysical information needed to define preshot and postshot geologic and hydrologic conditions at and near the site. This report des… more
Date: 1968
Creator: Gard, Leonard Meade, Jr.
Item Type: Refine your search to only Report
open access

Geology of the Great Smoky Mountains National Park. Tennessee and North Carolina

Description: From Preface: "The present account summarizes the results of a long investigation of the rocks of the Great Smoky Mountains (1946-55) by geologists of the staff of the U.S. Geological Survey, in collaboration with those of the Tennessee Division of Geology. The technical details of this investigation have already been set forth at length in professional papers of the U.S. Geological Survey. The present account contains the gist of these findings about the rocks of the mountains, and is accompan… more
Date: 1968
Creator: King, Philip Burke; Neuman, Robert B. & Hadley, Jarvis B.
Item Type: Refine your search to only Report
open access

Playa Surface Morphology: Miscellaneous Investigations

Description: Abstract: Numerous environmental processes affect the development and stability of playa (lakebed) surfaces. Of special significance are hydrologic processes that control the amount and flow of both surface and ground water, and climatic variations which in turn influence the hydrology. This report, in six parts, examines some aspects of the playa surface environment. Chapter 1 is an introduction. Chapter 2 describes microrelief changes that developed at Harper Playa, California, following floo… more
Date: March 1968
Creator: Neal, James T.
Item Type: Refine your search to only Report
open access

Transverse Antenna Feed Study: Final Report

Description: The program described in this final report had as its goal the investigation of the transverse focal region field distributions of a Cassegrain reflector antenna, evolving applicable microwave feed networks, and analysis of antenna system performance behavior as a function of the various feed electrical and physical parameters. (Author)
Date: May 1968
Creator: Martin, R. W.; Smilen, L. I. & Valentino, P.
Item Type: Refine your search to only Report
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