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United States Earthquakes, 1951

Description: Report discussing earthquake activity in the United States during 1951. The report is broken down by regions and has sections for specific earthquakes.
Date: 1951
Partner: UNT Libraries Government Documents Department
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United States Earthquakes, 1952

Description: Report discussing earthquake activity in the United States during 1952. The report is broken down by regions and has sections for specific earthquakes.
Date: 1952
Partner: UNT Libraries Government Documents Department
open access

United States Earthquakes, 1958

Description: Report discussing earthquake activity in the United States during 1958. The report is broken down by regions and has sections for specific earthquakes.
Date: 1958
Partner: UNT Libraries Government Documents Department
open access

United States Earthquakes, 1954

Description: Report discussing earthquake activity in the United States during 1954. The report is broken down by regions and has sections for specific earthquakes.
Date: 1954
Partner: UNT Libraries Government Documents Department
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The Asbestos Industry

Description: Report issued by the Bureau of Mines over the production and use of asbestos. Descriptions of the different types of asbestos are discussed. Its applications are also discussed. This report includes tables, illustrations, and photographs.
Date: 1955
Creator: Bowles, Oliver
Partner: UNT Libraries Government Documents Department
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Radioactive Manganese Occurrences in the Lower Rio Itapicurú Valley, Bahia, Brazil

Description: From abstract: Radioactive manganese deposits have been found in two swamps and at one locality on the northeast bank of the Rio Itapicuru near Mosquete, municipio of Itapicuru, State of Bahia, Brazil. The occurrences are related to warm springs and consist of surficial manganiferous sinter and of sandstone impregnated with manganese.
Date: April 1958
Creator: Haynes, Donald D.; Mau, Henry & White, Max Gregg
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Uranium in the Mamiña Area, Province of Tarapacá, Chile

Description: Abstract: In 1958 geologists of the U.S. Atomic Energy Commission and the Instituto de Investigaciones Geológicas de Chile made a reconnaissance for uranium in the Mamiña area, Province of Tarapacá in northern Chile.
Date: October 1958
Creator: Knowles, Paul H.; Bowes, William A.; C., Mario Serrano & H., Erik Klohn
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Uranium in the Elqui-Vicuña area, Province of Coquimbo, Chile

Description: Abstract: The Elqui-Vicuna area, Coquimbo province, Chile, was selected for uranium reconnaissance on the basis of two known uranium occurrences and favorable area-wide geologic indications of the possible presence of uranium in commercial quantities.
Date: September 1958
Creator: Bowes, William A.; Knowles, Paul H.; C., Mario Serrano & H., Erik Klohn
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Uranium in the Tocopilla area, Province of Antofagasta, Chile

Description: Abstract: In September-October 1958 a six-day reconnaissance in the Tocopilla area, Antofagasta Province, Chile, was made by members of the U.S. Atomic Energy Commission and the Instituto de Investigaciones Geológicas de Chile for the purpose of evaluating reported uranium occurrences.
Date: February 1959
Creator: Bowes, William A.; Knowles, Paul H.; C., Mario Serrano & S., Rudolfo Grüenwald
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Uranium in the Iquique Area, Province of Tarapaca, Chile

Description: Introduction: This exploratory work was undertaken as a preliminary evaluation of the area's uranium potential, and was limited to reconnaissance for favorable geologic indications of uranium, which included visits to selected localities and mining districts.
Date: October 1958
Creator: Bowes, William A.; Knowles, Paul H.; C., Mario Serrano & H., Erik Klohn
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Uranium in the Coal of São Paulo, Santa Catarina, and Rio Grande do Sul, Brazil

Description: Abstract: Uranium-bearing coal and carbonaceous shale .of the Rio Bonito formation of Pennsylvanian age have been found in the States of Sao Paulo, Santa Catarina, and Rio Grande do Sul, Brazil. The uranium oxide content of the samples collected in the State of Sao Paulo ranges from 0.001 percent to 0.082 percent. The samples collected in Santa Catarina averaged about 0.002 percent uranium oxide; those collected in Rio Grande do Sul, about 0.003 percent uranium oxide. Since the field and labora… more
Date: January 1958
Creator: Haynes, Donald D.; Pierson, Charles T. & White, Max G.
Partner: UNT Libraries Government Documents Department
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Uraniferous Coal and Carbonaceous Shale in Northeast Paraná, Brazil

Description: From abstract: Uraniferous coal has been found in northeast Parana', Brazil, in the Rio Bonito formation of Pennsylvanian age. In the majority of coal samples taken the uranium oxide content ranges from 0.005 to 0.030 percent, but selected screened samples have contained as much as 0.45 percent uranium oxide. The sampled thickness of the coal seam ranges from 17 to 54 centimeters and averages 31 centimeters. Channel samples across the entire thickness of the coal zone were taken in two places. … more
Date: January 1957
Creator: Haynes, Donald D. & Pierson, Charles Thomas
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Radioactive Minerals in the Southern Part of Brazil

Description: From introduction: This report describes the results of reconnaissance for radioactivity of rocks, exclusive of coal, in the States of Rio de Janeiro, Sao Paulo, Parana, Santa Catarina and Rio Grande do Sul during the years 195 through 1956. Reports on reconnaissance and detailed studies of uraniferous coal are being prepared for publication. This report concerns work performed by the Brazilian National Nuclear Energy Commission and the United States Geological Survey (on behalf of the United S… more
Date: January 1957
Creator: Pierson, Charles Thomas; Haynes, Donald D. & Ribeiro Filho, Evaristo
Partner: UNT Libraries Government Documents Department
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Magnesite Deposits of Central Ceará, Brazil

Description: From introduction: The purpose of this study was to investigate the quantity and quality of [Central Ceara, Brazil] magnesite, and the writer concludes that this group of deposits constitutes one of the major reserves of high-grade magnesite in the Western Hemisphere. The ore could be used in the production of any commercial grade of magnesia with little or no beneficiation. Soil and alluvial overburden is thin between widespread outcrops, so all the deposits could be mined from open pits.
Date: 1950
Creator: Bodenlos, Alfred J.
Partner: UNT Libraries Government Documents Department
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Radioactive Source Materials in Los Estados Unidos de Venezuela

Description: From Abstract: "This report summarizes data available on radioactive source materials in Los Estados Unidos de Venezuela accumulated by geologists of the Dirección Técnica de Geología and antecedent agencies prior to June 1951, and by the writers from June to November 1951."
Date: February 1953
Creator: Wyant, Donald G. & Sharp, William N.
Partner: UNT Libraries Government Documents Department
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Possibilities for uranium in Ecuador

Description: Discussing evidence of the potential of uranium in Ecuador
Date: August 1953
Creator: Judd, Edward K. & DeSanctis, Helen E.
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Uranium in the Cuzco-Anta Area, Department of Cuzco, Peru

Description: Introduction: The specific purpose of the work was to learn whether the selenium indicated by the presence of Astragalus g. was uniformly distributed in one or more formations, i.e., probably syngenetic, or whether it was spatially and, therefore genetically, related to alteration.
Date: March 1959
Creator: Gabelman, John W. & Jordán O., Victor
Partner: UNT Libraries Government Documents Department
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The Sayapullo Mine Area, Cajamarca Department, Peru

Description: Introduction: The writer visited the Sayapullo mine May 14 and 15, 1959, for comparative orientation, study of the uranium occurrence, and observation of alternation-metallization relations.
Date: July 1959
Creator: Gabelman, John W.
Partner: UNT Libraries Government Documents Department
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The Coal Industry of Brazil: Part 2. Technology of Mining and Preparation

Description: Report issued by the Bureau of Mines discussing the coal industry in Brazil. An emphasis is placed on the technological advancements of mining and preparation of coal. This report includes tables, maps, illustrations, and photographs.
Date: 1951
Creator: Good, John E.; Abreu, Alvaro & Fraser, Thomas
Partner: UNT Libraries Government Documents Department
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Preliminary Reconnaissance for Uranium, Colombia, South America

Description: Summarizing the Observations, interpretations, and recommendations of the Authors who were assigned for a two month period to cooperate with the Colombian government in an evaluation of their uranium exploration program.
Date: March 30, 1956
Creator: Isachsen, Y. William & Collins, G. E.
Partner: UNT Libraries Government Documents Department
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Possibilities for uranium in Peru

Description: Discussing evidence of the potential of uranium in Peru
Date: July 1953
Creator: Judd, Edward K. & DeSanctis, Helen E.
Partner: UNT Libraries Government Documents Department
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Geologic Outline of Peru

Description: Descriptions of the geology of Peru
Date: September 1956
Creator: Hartsock, John K.
Partner: UNT Libraries Government Documents Department
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Uranium Exploration and Development in Argentina

Description: Report discussing initial ventures in a joint project between the United States Atomic Energy Commission and the Comision Nacional de la Energía Atomica of Argentina (CNEA) to examine existing uranium deposits in Argentina and determine the best course for new prospecting programs. This document outlines the findings for specific locations visited in Argentina and their relative importance.
Date: April 1959
Creator: Stocking, Hobart E.; Wood, H. B. & Keyes, W. W.
Partner: UNT Libraries Government Documents Department
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