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National Institute for Occupational Safety and Health

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  • A discussion on the three-dimensional boundary value problem for electromagnetic fields
    Filetype[PDF - 123.86 KB]
    Personal Author:
    Rankin, David
    Conference Authors:
    Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
    Published Date:
    1973
    Source:
    Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 92-94
    Series:
    Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
    Description:
    Three -dimensional boundary value problems are difficult to solve. Indeed, while the separation of the scalar wave equation can be effected in 11 diff...
    File Type:
    Filetype[PDF - 123.86 KB]
    File Type:
    Filetype[PDF - 123.86 KB]
  • Alumina recovery from copper dump leaching liquors using a supported liquid membrane
    Filetype[PDF - 947.37 KB]
    Personal Author:
    Sandoval, S. P. (Scot Philip), 1958- ; Schultze, L. E. (Lawrence E.) ;
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1989
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9264
    Description:
    "The U.S. Bureau of Mines investigated the separation of aluminum from copper dump leaching liquors using a supported liquid membrane. Aluminum was se...
    File Type:
    Filetype[PDF - 947.37 KB]
    File Type:
    Filetype[PDF - 947.37 KB]
  • Experimental drift linings in a block-caving operation : a field demonstration
    Filetype[PDF - 14.19 MB]
    Personal Author:
    McLaughlin, William C. ; Thomas, L. A. (Lloyd A.) ; ...
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1983
    Series:
    Report of investigations (United States. Bureau of Mines) ; 8811
    Description:
    "Under a cooperative agreement, the Bureau of Mines, Magma Copper Company, and Asarco, Inc., tested backfilled ground support systems at two elevation...
    File Type:
    Filetype[PDF - 14.19 MB]
    File Type:
    Filetype[PDF - 14.19 MB]
  • A strong acid-weak acid method for producing aluminum chloride hexahydrate from kaolinitic clay
    Filetype[PDF - 565.65 KB]
    Personal Author:
    Bauer, D. J. (Donald J.) ; Shanks, D. E. (Donald E.) ; ...
    Corporate Authors:
    United States. Bureau of Mines. ; Eastern Associated Coal Corp. ;
    Published Date:
    1984
    Series:
    Report of investigations (United States. Bureau of Mines) ; 8908
    Description:
    "The Bureau of Mines has conducted extensive studies on the recovery of alumina from kaolinitic clay by a hcl leaching-hcl sparging process. The curre...
    File Type:
    Filetype[PDF - 565.65 KB]
    File Type:
    Filetype[PDF - 565.65 KB]
  • Longwall gate road stability in a steeply pitching thick coal seam with a weak roof
    Filetype[PDF - 6.17 MB]
    Personal Author:
    Barron, Lance R. ; DeMarco, Matthew J. ;
    Corporate Authors:
    United States. Bureau of Mines. ; Eastern Associated Coal Corp. ;
    Published Date:
    1995
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9580
    Description:
    "The U.S. Bureau of Mines conducted a ground pressure analysis of a wide abutment-type chain pillar in a two-entry gate road of a Western U.S. coal mi...
    File Type:
    Filetype[PDF - 6.17 MB]
    File Type:
    Filetype[PDF - 6.17 MB]
  • Statistics-based Safety - Part 1: An Analysis of the Crushed Stone Injuries Occurring During a 10-year Span Provides Insight Into Improving Safety
    Filetype[PDF - 396.02 KB]
    Personal Author:
    Karra, Vijia K., PH.D.
    Published Date:
    0/1/1900
    Description:
    Making sure workers within the aggregates industry go home safely each day is the goal of aggregate companies throughout the United States. At the Nat...
    File Type:
    Filetype[PDF - 396.02 KB]
    File Type:
    Filetype[PDF - 396.02 KB]
  • An investigation of crack propagation with a wedge indenter to improve rock fragmentation efficiency
    Filetype[PDF - 12.53 MB]
    Personal Author:
    Larson, David A. ; Morrell, Roger J. ; ...
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1987
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9106
    Description:
    "The Bureau of Mines conducted basic experiments to study the process of crack propagation with a wedge indenter. The work was conducted under plane s...
    File Type:
    Filetype[PDF - 12.53 MB]
    File Type:
    Filetype[PDF - 12.53 MB]
  • Recovery of cobalt from spent copper leach solutions : improved elution and impurity removal techniques, with revised process economics
    Filetype[PDF - 853.60 KB]
    Personal Author:
    Bennett, P. G. ; Jeffers, T. H. (Thomas H.) ;
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1988
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9190
    Description:
    "The Bureau of Mines developed a process using ion exchange to recover cobalt from spent copper leach solutions. A preliminary economic evaluation of ...
    File Type:
    Filetype[PDF - 853.60 KB]
    File Type:
    Filetype[PDF - 853.60 KB]
  • Testing modified coal-cutting bit designs for reduced energy, dust, and incendivity
    Filetype[PDF - 16.30 MB]
    Personal Author:
    Roepke, Wallace W. ; Hanson, Bruce D. ;
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1983
    Series:
    Report of investigations (United States. Bureau of Mines) ; 8801
    Description:
    "Four bit designs, two conical and two radial, were tested in coal against a 60 deg. Conical reference bit to obtain data on orthogonal cutting forces...
    File Type:
    Filetype[PDF - 16.30 MB]
    File Type:
    Filetype[PDF - 16.30 MB]
  • A photographic method for determining mineral reflectances in underground mines
    Filetype[PDF - 6.98 MB]
    Personal Author:
    Mayton, Alan G.
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1987
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9107
    Description:
    "The Bureau of Mines conducted a study to (1) determine from laboratory tests the feasibility of a photographic method for determining reflectances th...
    File Type:
    Filetype[PDF - 6.98 MB]
    File Type:
    Filetype[PDF - 6.98 MB]
  • Bending fatigue test 1 on a 2-inch 6x25 fiber core wire rope
    Filetype[PDF - 2.09 MB]
    Personal Author:
    McKewan, William M. ; Miscoe, Anthony J. ; ...
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1992
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9408
    Description:
    "The U.S. Bureau of Mines has established a wire rope research laboratory to examine the factors that affect the life of wire rope. A 2-in-diam 6x25 f...
    File Type:
    Filetype[PDF - 2.09 MB]
    File Type:
    Filetype[PDF - 2.09 MB]
  • Methane absorption in oil shale and its potential mine hazard
    Filetype[PDF - 627.22 KB]
    Personal Author:
    Matta, Joseph E. ; LaScola, John C. ; ...
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1977
    Series:
    Report of investigations (United States. Bureau of Mines) ; 8243
    Description:
    "The Bureau of Mines made laboratory absorption measurements on oil shale samples, which showed that the amount of methane absorbed is porportional to...
    File Type:
    Filetype[PDF - 627.22 KB]
    File Type:
    Filetype[PDF - 627.22 KB]
  • Updated analysis of longwall pillar stability (ALPS) computer program incorporates new coal mine roof rating (CMRR)
    Filetype[PDF - 89.77 KB]
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    February 1995
    Series:
    Technology news (United States. Bureau of Mines) ; 445
    Description:
    "The objective of this work is to develop a comprehensive, practical method for designing longwall gate entries that considers coal pillar size, mine ...
    File Type:
    Filetype[PDF - 89.77 KB]
    File Type:
    Filetype[PDF - 89.77 KB]
  • High-temperature relative enthalpies of Vâ‚‚0â‚…
    Filetype[PDF - 509.41 KB]
    Personal Author:
    Ferrante, M. J. (Michael John), 1930- ; Mrazek, R. V. (Robert V.) ;
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1986
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9039
    Description:
    "Relative enthalpies of V2O5 from 298.15 to 1,101.0 K were measured at the Bureau of Mines to provide data needed for the advancement of mineral techn...
    File Type:
    Filetype[PDF - 509.41 KB]
    File Type:
    Filetype[PDF - 509.41 KB]
  • Computer modeling of dust and forces for longwall mining systems
    Filetype[PDF - 1.16 MB]
    Personal Author:
    Hanson, Bruce D. ; Roepke, Wallace W. ;
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1988
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9203
    Description:
    "An interactive computer program has been developed by the Bureau of Mines which enables the user to identify the effect of cutting system changes on ...
    File Type:
    Filetype[PDF - 1.16 MB]
    File Type:
    Filetype[PDF - 1.16 MB]
  • Calamity Hollow Mine Fire Project (in five parts): 2. Operation of the burnout control system
    Filetype[PDF - 2.44 MB]
    Personal Author:
    Chaiken, Robert F. ; Dalveryny, Louis E. ; ...
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1989
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9241
    Description:
    "During the period from January to May 1982, the U.S. Bureau of Mines carried out a continuous field test of the burnout control process for controlli...
    File Type:
    Filetype[PDF - 2.44 MB]
    File Type:
    Filetype[PDF - 2.44 MB]
  • Protective structures for low-coal shuttle car operator
    Filetype[PDF - 1.74 MB]
    Personal Author:
    Bartels, John R. ; Kwitowski, August J. ; ...
    Corporate Authors:
    United States. Bureau of Mines.
    Published Date:
    1987
    Series:
    Report of investigations (United States. Bureau of Mines) ; 9143
    Description:
    "This report discusses the Bureau of Mines efforts to develop partial protective structures for operators of low-coal shuttle cars. In coal seams 48 i...
    File Type:
    Filetype[PDF - 1.74 MB]
    File Type:
    Filetype[PDF - 1.74 MB]
  • Longwall retreat of gate road pillars