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Quarry Problems in the Lime Industry

Description: From Introduction: "The purpose of this bulletin is not to describe individual quarries but to describe general methods of operation and give typical illustrations. The methods employed are discussed critically in an effort to elucidate the best working principles and to assist manufactures of lime in correcting errors and establishing their industry on the most economical and efficient basis."
Date: 1927
Creator: Bowles, Oliver & Myers, W. M.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Quartz and Silica: Part 1. - General Summary

Description: Report issued by the U.S. Bureau of Mines discussing quartz and silica minerals. As stated in the foreword, "the purpose of the present paper is to assemble brief summaries of the many widely differing industries engaged in the production and preparation of these minerals in their principal commercial forms" (p. 1). This report includes tables, and illustrations.
Date: August 1931
Creator: Santmyers, Reigart Meredith
Item Type: Report
Partner: UNT Libraries Government Documents Department

Quicksilver

Description: No Description Available.
Date: 1931
Creator: Schuette, C. N.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Quien Sabe Antimony Mine San Benito County, California

Description: Report issued by the Bureau of Mines over metallurgical studies of the Quien Sabe antimony mine. History, geology, and physical features of the mine are presented. This report includes tables, maps, and illustrations.
Date: February 1956
Creator: Wiebelt, Frank Joseph
Item Type: Report
Partner: UNT Libraries Government Documents Department

Radar Positioning System Accuracy Test

Description: Abstract: The U.S. Bureau of Mines conducted research to develop an accurate, real-time, position monitoring and warning system for the vehicles used in surface mining. The product of this research will be technology to reduce accidents and injuries associated with the operation of surface mining haulage equipment. The position monitoring system should reduce accidents related to vehicle position and also increase the efficiency of haulage operations. This research was conducted in preparation for development of an accurate, real-time position monitoring and warning system, which notifies equipment operators when they deviate from a known safe course and are approaching a fixed hazard. A radar positioning system designed for marine applications was evaluated and a series of tests was run to determine the accuracy of the radar positioning system when used in a land vehicle. The radar position determination was compared to surveyed values. Both static and dynamic (moving vehicle) tests were conducted. The static test results were marginal and the dynamic test results were not accurate enough for the position monitoring and warning system. Although a promising technology, the system tested needs to be modified to meet the accuracy requirements of mobile mine equipment.
Date: 1995
Creator: Utt, Walter K.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Rapid Separation of Heavy Rare-Earth Elements

Description: The U.S. Bureau of Mines investigated the separation of heavy rare-earth elements (REE) in an ion-exchange process. An ion-exchange column consisting of two sections, a loading section and a separation section, provides high levels of REE loading and good REE separation with an expected processing cycle of less than a month, while current ion-exchange technology requires more than 5 months. A different resin is used in each section: sulfonic resin in the loading section and iminodiacetic resin in the separation section. The separation section is further divided into two segments: the first conditioned with NH4 and the second with acid. Erbium is loaded onto both segments of the separation column as a retaining ion. Bands of mixed REE eluting between separated bands of pure REE were recycled directly to the column. Without mixed-band recycle, over 80% of the REE eluted from the column was separated into fractions with 99% purity of each element; with such recycle, the percentage of separated elements can be increased to around 90%.
Date: 1995
Creator: Moore, B. W.; Froisland, L. J. & Petersen, A. E.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Reactivity in the South Spoils and Hillside Dump at the Midnite Mine

Description: The Midnite Mine is an inactive open-pit uranium mine located on the Spokane Indian Reservation in Washington State. Drill samples from two large waste rock dumps on the site, known as South Spoils and Hillside Dump, were collected with a Becker hammer drill and evaluated to determine potential of the rock to generate acid mine drainage (AMD). Waste rock at this mine contains both pyrite and uranium, and AMD effects are more complicated on this site than most in that uranium is soluble in both acidic and neutral aqueous solutions. Although AMD protocols identified 26% of the South Spoils samples as potentially acid, under 7% of the spoil samples were actually producing acid. Considerable calcite exists in the South Spoils, and weathering feldspars further contribute to acid neutralization. The Hillside Dump has low concentrations of pyrite and calcite that acid-base accounting protocols would predict to be non-acidic. Accumulation of sulfate in rocks with concentrations of less than 0.3% S causes some of those normally non-acid producing rocks to produce acid in the Hillside Dump.
Date: 1996
Creator: Moore, Bruce W.; Price, Jesse W. & Gardner, Ted
Item Type: Report
Partner: UNT Libraries Government Documents Department

Reactivity Studies During Drying and Relocation of Lead-Zinc-Gold Tailings: Phase 1 - Preliminary Evaluation and Laboratory Testing

Description: The U.S. Bureau of Reclamation requested U.S. Bureau of Mines (USBM) assistance in developing design data for moving lead-zinc-gold tailings from their current location without disrupting the existing chemically stable conditions. This report presents results of USBM work in determining (1) the minimum required time to air dry the tailings to approximately 20 pct moisture under various drying conditions both in the laboratory and in the field, (2) the degree of oxidation or reduction that occurs during drying, (3) the effect of lime or cement addition before drying, and (4) the likely equilibrium conditions of the dried tailings after deposition at the new location. The limited number of tests performed by the USBM in the available time frame established trends in oxidation levels but did not provide absolute statistical validity of data values. All data from drying and oxidation testing are included in appendices to this report.
Date: 1995
Creator: Froisland, L. J. & Lym, P. B.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Real-Time Monitoring of Field Measurements for Mine Design: Greens Creek Mine, Admiralty Island, Alaska

Description: Abstract: Researchers at the U.S. Bureau of Mines conducted field investigations at the Greens Creek Mine in southeast Alaska for the purpose of validating computer design of mining methods and assessing real-time monitoring capabilities. The field study required the application of new technology because of the remoteness of the study site, the need for timely acquisition of data, and a limited budget for instruments and data acquisition. Various sensors were installed to monitor rock mass deformation and strain, temperature, SO gas emissions, and blasting. Data were collected through a distributed personal computer network and high-speed modems. These readings were used to develop visualization models of underground metal mining operations and drift-and-fill mining and real-time graphics displays of ground conditions. Results of the field tests showed that it is possible to gather, process, visualize, and verify mine designs on a real-time basis.
Date: 1996
Creator: Orr, T. J. & Beus, Michael J.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Recent Development of the Producer-Gas Power Plant in the United States

Description: From Introduction: "A summary of the tests made at St. Louis and a resume of the conclusions to be drawn from the tests and from the opinions of gas-producer manufacturers on the status of the gas producer and gas engine was published in a Survey bulletin in 1907. As it is desirable to repeat much of the material that appeared in the former bulletin (now out of print), this presentation may be regarded as a revision of the previous one, although considerable information not previously available for publication has been added."
Date: 1910
Creator: Fernald, Robert Heywood
Item Type: Report
Partner: UNT Libraries Government Documents Department

Recent Developments in Fire-Resistant Hydraulic Fluids for Underground Use

Description: Report issued by the Bureau of Mines discussing the use of fire-resistant hydraulic fluids in coal mines. As stated in the summary, "this report reviews investigations to determine the fire hazard in coal mining when using flammable petroleum hydraulic oils to actuate mining equipment and summarizes research by the Bureau of Mines and industry on fire-resistant hydraulic fluids" (p. 1). This report includes tables, illustrations, and photographs.
Date: 1961
Creator: Polack, Samuel, P.; Smith, Allan F. & Barthe, Henry P.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Recent Developments in Fuel Supply and Demand

Description: Report issued by the U.S. Bureau of Mines discussing the recent supply and demand of fuels. As stated by the author, "my purpose in this address is to review the changes in fuel supply and demand since 1937 and to give you my views on the outlook for the future" (p. 1). This report includes tables, and illustrations.
Date: November 1943
Creator: Fieldner, Arno Carl
Item Type: Report
Partner: UNT Libraries Government Documents Department

Recent Developments in Water Flooding in Nowata County, Oklahoma: Oil Fields, 1954-55

Description: Report issued by the Bureau of Mines over development of systematic flooding in oil field reservoirs. As stated in the introduction, "this report presents a discussion of four full-scale water-flooding projects in the Delaware-Childers field and 1 pilot project in the Curl Creek field" (p. 1). This report includes tables, graphs, maps, and illustrations.
Date: May 1955
Creator: Eakin, J. L.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Recent Progress in the Thawing of Frozen Gravel in Placer Mining

Description: Technical paper issued by the Bureau of Mines over progress made for thawing gravel in placer mines. Different thawing tests are presented and discussed. This paper includes tables, photographs, and illustrations.
Date: June 1922
Creator: Janin, Charles
Item Type: Report
Partner: UNT Libraries Government Documents Department

Reconnaissance of Gold-Mining Districts in the Black Hills, South Dakota

Description: From Introduction: "The principal purpose of the survey is to make public information not generally known concerning the gold deposits in the Black Hills. Operating mines, particularly the Homestake, are discussed only briefly."
Date: 1940
Creator: Allsman, Paul T.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Reconnaissance of Iron Occurrences in Colorado

Description: Report issued by the U.S. Bureau of Mines discussing iron deposits found in Colorado. As stated in the summary, "this paper describes the location and general features of iron occurrences in Colorado" (p. 1). History, geology, production, and use of Colorado iron ore is presented. This report includes tables, illustrations, and a map.
Date: 1959
Creator: Harrer, C. M. & Tesch, W. J., Jr.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Reconnaissance of Metal Mining in the San Juan Region: Ouray, San Juan, and San Miguel Counties, Colorado

Description: Report issued by the U.S. Bureau of Mines discussing metal mines in Colorado. As stated in the summary, "this paper describes the mineral deposits and discusses mining and milling methods and related operating conditions in an important gold, silver, lead, and zinc producing area in Ouray, San Juan, and San Miguel Counties, Colo., embracing 250 square miles" (p. 5). This report includes tables, maps, and illustrations.
Date: March 1950
Creator: King, William H. & Allsman, Paul T.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Reconnaissance of the Beluga River Coalfield, Alaska

Description: Report issued by the Bureau of Mines over studies conducted on the Beluga River coalfield "to determine, if possible, which areas were most favorable for developing large reserves of coal suitable for open-pit mining" (p. 1). Description of the coal deposits, and results of the study are presented. This report includes tables, illustrations, and maps.
Date: 1958
Creator: Maloney, Raymond P.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Reconnaissance of the Cartersville Manganese Deposits, Bartow County, Georgia

Description: Report issued by the Bureau of Mines over attempts to extract manganese ore from different sources in Bartow County, Georgia. Location, amount, and analysis of the manganese deposits are presented. This report includes tables, and maps.
Date: January 1954
Creator: O'Neill, J. F. & Wyndham, C. E.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Reconnaissance Studies of Alaskan Beach Sands, Eastern Gulf of Alaska

Description: Report issued by the Bureau of Mines over studies of East Alaska beach sands to determine if there was any valuable mineral content. The results of these studies are presented. This report includes tables, and maps.
Date: 1962
Creator: Thomas, Bruce I. & Berryhill, Robert V.
Item Type: Report
Partner: UNT Libraries Government Documents Department

Recovery of Alumina From Kaolin by the Lime-Soda Sinter Process

Description: Report issued by the U.S. Bureau of Mines on exploration of kaolin clay deposits for alumina. Properties of the kaolin clay and alumina recovered are listed. This report includes tables, graphs, and illustrations.
Date: May 1947
Creator: Cservenyak, Frank J.
Item Type: Report
Partner: UNT Libraries Government Documents Department