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Burning Anthracite Barley on a Chain-Grate Stoker in a Two-Arch Furnace
Report issued by the U.S. Bureau of Mines on the use of anthracite barley as a fuel for a chain-grate stoker in a two-arch furnace. The efficiency and capacity of the anthracite barley as fuel is presented. Tables, graphs, and illustrations are included in the report.
Date:
August 1950
Creator:
Burdick, L. R. & Morgan, R. E.
System:
The UNT Digital Library
Temperature Entropy Chart of Thermodynamic Properties of Nitrogen
Report issued by the U.S. Bureau of Mines on the complete revision of the temperature entropy chart developed 25 years prior. The revised chart presented shows the thermodynamic properties of nitrogen.
Date:
September 1950
Creator:
Burnett, E. S.
System:
The UNT Digital Library
Petroleum Engineering Report, Big Spring Field and Other Fields in West Texas and Southeastern New Mexico
Report issued by the Bureau of Mines over petroleum engineering studies conducted in Texas and New Mexico. The results of the studies are presented and discussed. This report includes tables, maps, illustrations, and photographs.
Date:
November 1936
Creator:
Carpenter, Charles B. & Hill, Harry Blackburn
System:
The UNT Digital Library
Petroleum Engineering Study of the Anahuac Field, Chambers County, Texas
Report issued by the U.S. Bureau of Mines on the development and engineering of petroleum fields in Chambers County, Texas. Analyses are presented. Report includes tables, graphs, maps, illustrations, and photographs.
Date:
August 1941
Creator:
Carpenter, Charles B. & Schroeder, H. J.
System:
The UNT Digital Library
Petroleum-Engineering Study of the New Hope Oil Field, Franklin County, Texas
Report issued by the Bureau of Mines regarding studies on the modern petroleum engineering techniques used in Franklin County, Texas. Drilling methods, and analysis of the core samples are presented. This report includes tables, and graphs.
Date:
September 1949
Creator:
Carpenter, Charles B.; Anderson, Kenneth F. & Cook, Alton B.
System:
The UNT Digital Library
Magnolia Oil Field, Columbia County, Arkansas: Part 1. Petroleum-Engineering Study; Part 2. Derivation and Application of Material-Balance Equations
Report issued by the U.S. Bureau of Mines on studies conducted at the Magnolia oil fields in Columbia County, Arkansas. History, geology, and methods are presented. This report includes tables, graphs, maps, and illustrations.
Date:
September 1943
Creator:
Carpenter, Charles B.; Schroeder, H. J. & Cook, Alton B.
System:
The UNT Digital Library
Beneficiation Studies of the Oregon Coastal Dune Sands for Use as Glass Sand
Report issued by the Bureau of Mines on the coastal sands and their potential for being used as glass sand. Samples were tested, and properties of the sands are presented. This report includes tables, maps, and photographs.
Date:
1964
Creator:
Carter, George J.; Harris, Henry M. & Strandberg, Karle G.
System:
The UNT Digital Library
Underground Combustion Oil-Recovery Experiment in the Venango First Sand, Warren County, Pennsylvania
Report by the Bureau of Mines over oil-recovery methods and experiments conducted in Warren County. Preparation, methods, and results of the experiments are presented. This report includes tables, graphs, maps, and illustrations.
Date:
1963
Creator:
Caspero, N. A.; Wertman, W. T. & Eckard, William E.
System:
The UNT Digital Library
Reducing Respirable Dust Levels During Bag Conveying and Stacking Using Bag and Belt Cleaner Device
Abstract: The U.S. Bureau of Mines has designed and tested a system called the Bag and Belt (leaner Device (B&BCD) to reduce dust levels in and around the bag conveying and stacking process. The device physically cleans either 22.7 kg (50 lb) or 45.4 kg (100 lb) paper bags by using a combination of brushes and air jets. It is completely self-contained and is kept under negative pressure by a baghouse to ensure that dust and product removed from the bags during cleaning does not flow into the work environment and contaminate workers. The bags travel through the device on a chain conveyor, which permits any product or dust cleaned from the bags to fall into a hopper at the bottom of the device and be recycled back into the process via a screw conveyor. Once exiting the B&BCD, the outside of the bags and the conveyor are essentially product and dust free. The B&BCD was evaluated at two mineral processing plants to determine reductions with the device in use. The results of both field evaluations showed that the amount of product removed from the outside of the bags varied from 77 to 93 pct.
Date:
1995
Creator:
Cecala, Andrew B.; Timko, Robert J. & Prokop, Alexander D.
System:
The UNT Digital Library
Application of Electrical-Resistivity Surveys to Exploration for Zinc-Lead Deposits, Racine-Spurgeon Area, Newton County, Missouri
Report issued by the Bureau of Mines over surveys conducted on zinc-lead deposits of Newton County, Missouri. Results of the surveys are presented. This report includes tables, maps, and illustrations.
Date:
1959
Creator:
Chester, John William
System:
The UNT Digital Library
Hydrogenation of Petroleum and Lignite Tar Distillates
Report issued by the U.S. Bureau of Mines regarding the operation of the Coal Hydrogenation Demonstration Plant in Missouri. This report summarizes the operating experience gained and the characteristics of the products created during operation of the plant. The report includes graphs, tables, and illustrations.
Date:
April 1950
Creator:
Clarke, E. A.; Chaffee, C. C. & Hirst, L. L.
System:
The UNT Digital Library
Early Operations of the Hydrogenation Demonstration Plant, Using Rock Springs, Wyoming Coal
Report issued by the Bureau of Mines over studies conducted on a coal-hydrogenation demonstration plant. The early operations of the demonstration plant are discussed. This report includes tables, illustrations, and photographs.
Date:
May 1953
Creator:
Clarke, Edwin A.; Chaffee, C. C. & Hirst, L. L.
System:
The UNT Digital Library
Core-Drilling Testing for Base-Metal Mineralization Below the Hope Silver Mines, Granite County, Montana
Report issued by the Bureau of Mines over base-metal testing conducted in Granite County, Montana. Descriptions of the deposits, geology, and the factual data obtained during testing are presented. This report includes tables, maps, and illustrations.
Date:
February 1949
Creator:
Cole, John W.
System:
The UNT Digital Library
Investigation of the Electric Point and Gladstone Lead-Zinc Mines, Stevens County, Washington
Report issued by the Bureau of Mines regarding studies conducted on lead-zinc mines in Stevens County, Washington. As stated in the introduction, "this report presents the factual data obtained from the trenching and sampling operations" (p. 1). This report includes tables, maps, and illustrations.
Date:
January 1949
Creator:
Cole, John W.
System:
The UNT Digital Library
Dust Control Considerations for Deep-Cut Mining when Utilizing Exhaust Ventilation and a Scrubber
Abstract: The U.S. Bureau of Mines conducted a series of laboratory tests to investigate the effectiveness of using a flooded-bed scrubber with exhaust ventilation in deep-cut faces of up to 12.2 m in length. An experimental test program to determine the impact on respirable dust levels resulting from changes in face airflow, curtain setback distance, operator positioning, and operating parameters of the external spray system on the miner was completed. Gravimetric sampling was conducted in the immediate return and at three sampling locations on the off-curtain side of the entry. Statistically significant differences in dust levels on the order of 0.5 to 1.2 mg/m3 were observed between specific sampling locations and changes in several test parameters. Several of the statistically significant relationships were found at the inby operator position, which is the least desirable of the operator locations that were tested. The relative effectiveness of the dust control at the other sampling locations was not severely impacted with the scrubber operating. Dust control was the primary focus of this research; results indicated that a flooded-bed scrubber and exhaust ventilation can be a viable system for extracting deep cuts up to 12.2 m in length. The impact on methane was not …
Date:
1996
Creator:
Colinet, Jay F. & Jankowski, Robert A.
System:
The UNT Digital Library
Dust Sources and Controls for Multiple-Machine Longwall Faces
Abstract: Longwall mining in lower seam heights may necessitate the use of single-drum shearers to overcome size constraints associated with standard double-drum shearers. To avoid the operational problem of clearance in the tailgate entry with one single-drum shearer, two single-drum machines can be operated on the same face, with each shearer responsible for mining a predefined portion of the face. However, utilization of two shearers on the same face necessitates the positioning of one shearer operator and a jacksetter in the return air of the upwind shearer, thus complicating respirable dust control on the longwall. In an effort to evaluate the unique dust control problems associated with this type of mining, the U.S. Bureau of Mines conducted dust surveys on two multiple-machine longwall operations. Sampling was done to quantify major sources of respirable dust and to identify potential solutions to problem areas. Sampling results indicate that the cutting sequences utilized on multiple-machine faces may have to be designed to minimize dust exposure, as opposed to optimizing productivity or facilitating operational requirements. Also, state-of-the-art dust control techniques typically found on double-drum shearer longwalls must be employed to help minimize the exposure of all face personnel to traditional dust sources.
Date:
1995
Creator:
Colinet, Jay F. & Spencer, Ellsworth R.
System:
The UNT Digital Library
Bureau of Mines Research on Trailing-Cable-Fault Locators
Report issued by the Bureau of Mines over fault locators in trailing cables. The methods used for locating faults are discussed. This report includes tables, illustrations, and photographs.
Date:
1978
Creator:
Conroy, George J.
System:
The UNT Digital Library
Special Studies of Reservoir Oils in Naval Petroleum Reserve No. 1, Elk Hills Field, California
Report from the U.S. Bureau of Mines on studies conducted on the reservoir oils of Elk Hills field. Methods and instrumentation used in the studies are presented. This report includes tables, graphs, and maps.
Date:
April 1947
Creator:
Cook, Alton B. & Shea, G. B.
System:
The UNT Digital Library
A New Method of Determining Variations in Physical Properties of Oil in a Reservoir, with Application to the Scurry Reef Field, Scurry County, Texas
Report issued by the Bureau of Mines over determining the properties of oil reserves. Details about the methods developed to determine these properties are presented. This report includes tables, maps, photographs, and illustrations.
Date:
February 1955
Creator:
Cook, Alton B.; Spencer, G. B.; Bobrowski, F. P. & Chin, Tim
System:
The UNT Digital Library
Magnetic Surveys in the Iron Springs District: Iron County, Utah
Report issued by the Bureau of Mines over magnetometer surveys conducted on iron deposits in Utah. Details of the deposits included in the survey are listed. The methods of testing each deposit are also presented. This report includes tables, maps, photographs, and illustrations.
Date:
January 1950
Creator:
Cook, Kenneth L.
System:
The UNT Digital Library
Recovery of Alumina From Kaolin by the Lime-Soda Sinter Process
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.
System:
The UNT Digital Library
A Process for the Production of Iron-Free Alum: Part 2. Pilot-Plant Development
Report issued by the Bureau of Mines over studies conducted on the production processes of iron-free alum. This is the second part of the report, and focuses on the development and operation of a continuous pilot plant. This report includes tables, graphs, photographs, and illustrations.
Date:
September 1948
Creator:
Cunningham, William K.; Gee, Edwin A. & Heindl, R. August
System:
The UNT Digital Library
Tungsten Deposits of Yuma, Maricopa, Pinal, and Graham Counties, Arizona
Report issued by the Bureau of Mines over tungsten deposits of Arizona. Characteristics of the tungsten deposits are discussed. This report includes tables, maps, and illustrations.
Date:
1959
Creator:
Dale, Vernon B.
System:
The UNT Digital Library
Oil Yields and Stratigraphy of the Green River Formation's Tipton Member at Bureau of Mines Sites Near Green River, Wyoming
Report issued by the Bureau of Mines over the oil yields at the Green River. The average oil yields from the area are discussed. This report includes tables, and illustrations.
Date:
1972
Creator:
Dana, George F. & Smith, John Ward
System:
The UNT Digital Library