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What is Known about the Effect of Smoke on Health

Description: From title page: "For some years the Bureau of Mines, in connection with its investigations relating to efficiency in the combustion of fuels, as been engaged in a study of smoke prevention. Popular support for such work is usually based upon the injurious effects of smoke on the human ssytem, and this paper is published as a contribution to the literature dealing with that subject."
Date: December 7, 1926
Creator: White, William Charles
Partner: UNT Libraries Government Documents Department

Laboratory and Full-Scale Sulfur Elimination Tests on Coal from Pratt Bed, Alabama

Description: Report issued by the Bureau of Mines over studies conducted on the Pratt coal bed in Alabama. The report details "washability studies of coal from beds in Alabama and other southern states in which commercially important deposits occur" (p. 1). This report includes tables, graphs, and illustrations.
Date: May 1958
Creator: Perry, R. E.; Gandrud, B. W.; Riley, H. L.; Gayle, J. B. & Eddy, W. H.
Partner: UNT Libraries Government Documents Department

A Survey of Oil Production in Oklahoma By Water Flooding: Part 1. Nowata, Rogers, and Craig Counties

Description: A report of investigations from the U.S. Bureau of Mines on the use of water-flooding in oil production. This is the first part of the two-part report, and covers the areas of Nowata, Rogers, and Craig counties in Oklahoma. This report includes maps, tables, and graphs.
Date: November 1951
Creator: Powell, John P. & Johnston, Kenneth H.
Partner: UNT Libraries Government Documents Department

National Motor-Gasoline Survey, Summer 1951

Description: Report issued by the U.S. Bureau of Mines on the motor fuel sold between July and August, 1951. The report analyzes the properties and characteristics of the fuel samples collected. The report includes tables and graphs.
Date: January 1952
Creator: Blade, O. C.
Partner: UNT Libraries Government Documents Department

Estimate of Known Recoverable Reserves of Coking Coal in Floyd County, Kentucky

Description: Report issued by the U.S. Bureau of Mines on the known recoverable reserves of coking coal in Floyd County, Kentucky. The investigation includes a study on the properties of coal and coal blends found in the area. This report contains maps and tables.
Date: September 1951
Creator: Dowd, James J.; Turnbull, Louis A.; Toenges, Albert L.; Abernethy, R. F. & Reynolds, D. A.
Partner: UNT Libraries Government Documents Department

Thermodynamic Properties of Forsterite and Serpentine

Description: From introduction: "This report contains the results of measurements to obtain the heats of formation of forsterite and chrysotile; entropies at 298.15 K of two polymorphs of serpentine, chrysotile and antigorite; and high temberature heat content increments for antigorite. These results have been combined with other pertinent data to derive heat and free energy values at high temperatures."
Date: June 1967
Creator: King, E. G.; Barany, H.; Weller, W. W. & Pankratz, L. B.
Partner: UNT Libraries Government Documents Department

Carbon Tetrachloride Extinguisher of Electric Fires

Description: Report discussing "the extent and nature of the hazards to firefighters from gases and smoke resulting from the application of carbon tetrachloride extinguisher to electric arcs, burning insulation or fires such as may occur in electrical apparatus and machinery. The experiments described were made for the purpose of determining the nature of gases and smoke and ascertaining their toxic properties" (p. 1).
Date: July 1923
Creator: Katz, S. H.; Gleim, E. J. & Bloomfield, J. J.
Partner: UNT Libraries Government Documents Department

Estimate of Known Recoverable Reserves and the Preparation and Carbonizing Properties of Coking Coal in Anderson County, Tennessee

Description: Report issued by the Bureau of Mines over investigations of coking coal reserves of Anderson County, Tennessee. Testing to determine suitability for producing metallurgical coke is also presented. This report includes tables, maps, photographs, and illustrations.
Date: December 1955
Creator: Williams, Lloyd; James, Curtis; Gandrud, B. W. & Reynolds, D. A.
Partner: UNT Libraries Government Documents Department

Alumina Miniplant Operations: Separation of Aluminum Chloride Liquor from Leach Residue Solids by Classification and Thickening

Description: Report issued by the Bureau of Mines over recovery methods of alumina through leaching of kaolin clay. The materials, equipment, and procedures used are discussed. This report includes tables, and illustrations.
Date: 1983
Creator: Sorensen, Roy T.; Sawyer, Dwight L., Jr. & Turner, Theodore L.
Partner: UNT Libraries Government Documents Department

Structural Analysis of a Mechanized LHD Trench Undercut Caving System

Description: Abstract: This U. S. Bureau of Mines (USBM) report presents results of stress analyses and field observations to investigate the effects of elevated trench drifts on the structural stability of rock mass zones surrounding a production draw drift in a mine utilizing a mechanized load-haul-dump (LHD) trench undercut panel caving system. A two-dimensional boundary-element mine stress model was developed to predict the locations and extent of damaged rock mass zones surrounding draw drifts where adjacent, parallel trench drifts are either elevated or not elevated above the LHD production draw drift level. A Mohr-Coulomb shear-failure criterion was obtained directly from in situ borehole shear test data. Hoek-Brown shear-failure parameter values were computed from borehole-shear and triaxial test data. A procedure is described to estimate these parameters when a rock mass rating (RMR) value and triaxial data on intact samples exist, and no borehole shear test data exist. Results indicate that trench drifts, elevated to the level equal to the height of the LHD production draw drift, would not minimize material damage nor significantly enhance the stability of rib and crown pillar zones surrounding production draw drifts in the mechanized LHD trench undercut caving panel investigated at this mine.
Date: 1995
Creator: Jude, Charles V.
Partner: UNT Libraries Government Documents Department

Effects of Remote Drop and Pumpdown Placement on Cellular Concrete

Description: Abstract: The hazards to the public posed by abandoned mine shafts are well documented. As private development encroaches on previously mined areas, the potential for fatalities and serious injuries from abandoned mine shafts increases. The U.S. Bureau of Mines has conducted research into cellular concrete as a material for sealing these openings. The current work involves testing the characteristics of cellular concrete before and after it had been pumped or dropped from different heights into a simulated mine shaft. Cellular concrete was pumped vertically up to and subsequently dropped from heights of 18 and 37 m into concrete forms. Wet density measurements were made at multiple sampling points in the test circuit. Air content determinations and uniaxial compressive strength testing were conducted. Research results showed significant loss in air content and changes in the characteristics of cellular concrete during pumping or dropping from various heights. Recommendations on effective use of cellular concrete for sealing abandoned mine shafts are made.
Date: 1995
Creator: Boreck, D. L. & Miller, R. E.
Partner: UNT Libraries Government Documents Department

Improved Performance of Linear Coal Cutting Compared with Rotary Cutting

Description: From abstract: The linear cutting system, developed by the U.S. Bureau of Mines, uses geometric principles developed by Cardan to produce a nearly constant cut depth. The new system has been extensively tested in a synthetic material under laboratory conditions to verify mechanical capability and to identify operational characteristics. This report details the improved performance versus rotary cutting.
Date: 1995
Creator: Roepke, Wallace W.; Hanson, B. D.; Olson, R. C.; Wingquist, C. F. & Myren, T. A.
Partner: UNT Libraries Government Documents Department

High-Temperature Cyanide Leaching of Platinum-Group Metals from Automobile Catalysts--Pilot Plant Study

Description: From abstract: The U.S. Bureau of Mines Reno Research Center investigated, developed, and patented a high temperature cyanide leaching process for recovering platinum-group metals (PGM) from automobile catalysts. A batch pilot plant was constructed at the center and operated to demonstrate this technology to industry.
Date: 1995
Creator: Kuczynski, R. J.; Atkinson, G. B. & Dolinar, W. J.
Partner: UNT Libraries Government Documents Department

Field Demonstration of Two Pneumatic Backfilling Technologies

Description: Abstract: This U.S. Bureau of Mines (USBM) report summarizes a field demonstration of pneumatic backfiling technologies conducted at the abandoned Hillside Coal and Iron Slope in Vandling, PA. Researchers demonstrated tro pneumatic backfilling technologies recently developed under the USBM's Abandoned Mine Reclamation Research Program, the Pneumatic Pipefeeder and the High-Efficiency Ejector. Both systems had previously been evaluated at the USBM's subsidence abatement investigation laboratory near Fairchance, PA. The objective of the demonstration was to fill 100% of the abandoned tunnel with backfill stone to prevent further subsidence. The Pneumatic Pipefeeder was used for 21 days, at a rate of 63 to 124 t/d (69 to 136 st/d), to fill 88% of the tunnel. The High-Efficiency Ejector was used for 2 days, at a rate of 125 to 132 t/d (138 to 146 st/d) to fill the remaining 12% of the tunnel. The backfill placed by both systems was tightly compacted. The major problem encountered was wear on the polyethylene pipeline from the abrasion of the high-velocity backfill. The use of heavier steel pipe minimized the problem. A cost analysis for the entire project is given.
Date: 1995
Creator: Dyni, Robert C.; Burnett, Mackenzie & Philbin, David
Partner: UNT Libraries Government Documents Department

Development of Coal Combustion Sensitivity Tests for Smoke Detectors

Description: Standard smoldering and flaming combustion tests using small coal samples have been developed by the U.S. Bureau of Mines as a method to evaluate the response of a smoke detector. The tests are conducted using a standard smoke box designed and constructed according to Underwriters Laboratories. The tests provide a standard, easily reproducible smoke characteristic for smoldering and flaming coal combustion, based upon a comparison of the smoke optical density and the response of a standard ionization chamber to the smoke. With these standard tests, the range of threshold limits for the response of a smoke detector and the detector's reliability can be evaluated for nearly identical smoke visibility and smoke physical characteristics. The detector's threshold response limits and reliability need to be well defined prior to the instrument's use as part of a mine fire warning system for improved mine safety.
Date: 1995
Creator: Edwards, John C. & Morrow, Gerald S.
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
Partner: UNT Libraries Government Documents Department