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Showing 44581 - 44600 of 82805 results
  • Releasing the Energy of Workers to Create a Saffer Workplace The Value of Using Mentors to Enhance Safety Training
    Releasing the Energy of Workers to Create a Saffer Workplace: The Value of Using Mentors to Enhance Safety Training
    Camm, Thomas W. ;
    Cullen, Elaine T.
    2002/01/01 | Mining Publications
    The mentor/learner model is a time-honored approach to teaching, including within the mining industry. Miners know when they see excellence and have a deep respect for experts in their field. By using expert miners as mentors to other, less-experienced miners, training programs can be developed that will have a legitimacy and credibility that reson ...
    Public Domain
  • Issues for Training an Evolving Emergency Management Workforce A View from the US Mining Community
    Issues for Training an Evolving Emergency Management Workforce: A View from the U.S. Mining Community
    Kowalski, Kathleen M. ;
    Vaught, Charles
    2002/01/01 | Mining Publications
    This paper reviews research from the U.S. mining community to define issues relevant to an evolving national and international workforce and to relate them to the emergency response population. The authors further explore and relate the key problem of an aging workforce to the resultant changes and emerging physical and psychological needs of emerg ...
    Public Domain
  • Technology for Remote Mine Seal Construction 2002
    Technology for Remote Mine Seal Construction [2002]
    Trevits, Michael A. ;
    Urosek, John E.
    2002/01/01 | Mining Publications
    Mine fires can be especially perilous because toxic products can quickly spread well beyond the fire zone thereby exposing all underground miners to dangerous and deadly conditions. Since November 1998, there have been six major underground coal mine fires or explosions in the United States (Willow Creek (twice), Sanbom Creek, Loveridge No. 22, Wes ...
    Public Domain
  • The Introduction of Roof Bolting to US Underground Coal Mines 19481960 A Cautionary Tale
    The Introduction of Roof Bolting to U.S. Underground Coal Mines (1948–1960): A Cautionary Tale
    Mark, Christopher
    2002/01/01 | Mining Publications
    Perhaps the most significant development in coal mine ground control during the last century was the introduction of roof bolting during the late 1940's and 1950's. From an engineering standpoint, roof bolts are inherently more effective than the wood timbers they replaced. Roof bolts promised to dramatically reduce the number of roof fall accident ...
    Public Domain
  • Evaluation of DeepSeated Crib Block Fire Tests
    Evaluation of Deep-Seated Crib Block Fire Tests
    Trevits, Michael A. ;
    Smith, Alex C.
    2002/01/01 | Mining Publications
    The National Institute for Occupational Safety and Health (NIOSH), in partnership with the Mine Safety and Health Administration (MSHA), is conducting research to test, evaluate, improve or modify coal mine fire-fighting strategies and methodologies through large-scale tests. Since wood is the second most abundant fuel available during a coal mine ...
    Public Domain
  • The NIOSH Shield Hydraulics Inspection and Evaluation of Leg Data Shield Computer Program
    The NIOSH Shield Hydraulics Inspection and Evaluation of Leg Data (Shield) Computer Program
    Barczak, Thomas M. ;
    Conover, David P.
    2002/01/01 | Mining Publications
    Longwall shields provide essential ground control in longwall mining. However, a high percentage of shields are operating at less than peak capacity and many at well below the rated support capacity due to defective hydraulic cylinders or malfunctions in other hydraulic components. Leg pressure data are currently collected on state-of-the-art longw ...
    Public Domain
  • New Developments With The Coal Mine Roof Rating
    New Developments With The Coal Mine Roof Rating
    Mark, Christopher ;
    Molinda, Gregory M.
    2002/01/01 | Mining Publications
    The Coal Mine Roof Rating (CMRR) was first presented at this conference 9 years ago. Since its introduction, the CMRR has been incorporated into many aspects of mine planning, including longwall pillar design, roof support selection, feasibility studies, and extended-cut evaluation. It has also become truly international, with involvement in mine d ...
    Public Domain
  • Methods to Minimize Injuries in MaterialsHandling and Processes in Underground Mines
    Methods to Minimize Injuries in Materials-Handling and Processes in Underground Mines
    Stewart, Bill M. ;
    Patton, Philip W.
    2002/01/01 | Mining Publications
    Handling materials in underground mines continues to be a major safety problem. To help reduce materials-handling injuries, researchers at the Spokane Research Laboratory of the National Institute for Occupational Safety and Health are investigating those materials-handling tasks in underground mines that appear to generate a high number of injurie ...
    Public Domain
  • New Approach Controls Dust At The Collector Dump Point NIOSH Finds A Simple CostEffective Solution For Reducing Dust For Blasthole Dills
    New Approach Controls Dust At The Collector Dump Point - NIOSH Finds A Simple, Cost-Effective Solution For Reducing Dust For Blasthole Dills
    Reed, William R. ;
    Organiscak, John A.
    2002/01/01 | Mining Publications
    Researchers studying dust generation from blasthole drills developed a simple, quick fix that reduced respirable dust concentrations by more than 63% at the dump point. This device, which requires almost no maintenance, is small and inexpensive, and it will help operators maintain compliance to the dust standard. The thought process was that a redu ...
    Public Domain
  • Mechanics of a Large StrainType Rock Burst and Design for Prevention
    Mechanics of a Large, Strain-Type Rock Burst and Design for Prevention
    White, Brian G. ;
    Williams, Theodore J.
    2002/01/01 | Mining Publications
    Detailed mapping and examination of the site of a large rock burst at the Lucky Friday Mine, Mullan, ID, demonstrated conclusively that damage was caused by a splitting and buckling failure mechanism initiated by separation of rock into layers along steeply dipping metamorphic shear foliation subparallel to the affected crosscut. The thin tablular ...
    Public Domain
  • Remote Gob Gas Venthole Monitoring and Cellular TelephoneBased RealTime Data Transmission System
    Remote Gob Gas Venthole Monitoring and Cellular Telephone-Based Real-Time Data Transmission System
    Garcia, Fred ;
    Diamond, William P.
    2002/01/01 | Mining Publications
    Many longwall mines rely on methane drainage to supplement traditional fan-based ventilation systems. However, the surface production facilities for methane drainage systems, including gob gas ventholes, are commonly located in remote locations, sometimes without convenient access to electrical power, and they may be monitored infrequently. The fir ...
    Public Domain
  • Improving Ventilation in Underground Stone Mines 2002
    Improving Ventilation in Underground Stone Mines [2002]
    Kissell, Fred N. ;
    Volkwein, Jon C.
    2002/01/01 | Mining Publications
    The new MSHA diesel rules have stone mine operators looking hard at possible upgrades to their ventilation systems. There are existing methods to reduce diesel engine emissions (MSHA, 2001)(Head, 2001b), but many operators will decide that a ventilation upgrade is necessary as well. NIOSH has several stone mine ventilation projects underway, but in ...
    Public Domain
  • Motion Editing and Reuse Techniques and Their Role in Studying Events Between a Machine and Its Operator
    Motion Editing and Reuse Techniques and Their Role in Studying Events Between a Machine and Its Operator
    Volberg, Ovsei ;
    Ambrose, Dean H.
    2002/01/01 | Mining Publications
    Motion capture involves recording the position and global orientation of joint sensors of a real object, in most cases a real person performing some human activities. This information is usually recorded at uniformly spaced instances of time, or as it is often called frame-by-frame. Then the recorded motion data sets are processed and mapped into a ...
    Public Domain
  • Initial Stability Study of Large Openings for the National Underground Science Laboratory at the Homestake Mine Lead SD
    Initial Stability Study of Large Openings for the National Underground Science Laboratory at the Homestake Mine, Lead, SD
    Tesarik, Douglas R. ;
    Johnson, Jeffrey C.
    2002/01/01 | Mining Publications
    The study of neutrinos-particles infinitesimally smaller than atoms-would be significantly advanced if a deep underground facility were available that would filter out unwanted cosmic radiation. Encouraging progress has been made in satisfying the criteria for such a facility with the selection of the Homestake Mine in Lead, SD, by the National Und ...
    Public Domain
  • High Stress Mining Under Shallow Overburden in Underground US Stone Mines
    High Stress Mining Under Shallow Overburden in Underground U.S. Stone Mines
    Iannacchione, Anthony T. ;
    Dolinar, Dennis R.
    2002/01/01 | Mining Publications
    The Chestnut Ridge Anticline is a prominent structure in southwestern Pennsylvania, USA. This structure has brought two economically valuable limestone formations to the surface, where they are easily accessible to room-and-pillar mining. Nine active crushed stone quarries, an underground research facility, and one industrial facility currently ope ...
    Public Domain
  • FLAC Simulation of SplitPipe Tests on an Instrumented Cable Bolt
    FLAC Simulation of Split-Pipe Tests on an Instrumented Cable Bolt
    Ruest, Marc ;
    Martin, Lewis A.
    2002/01/01 | Mining Publications
    A new instrumented cable bolt has been developed by the National Institute for Occupational Safety and Health at the Spokane Research Laboratory in Spokane, WA. Although various instruments are available to measure load distribution and magnitude along a grouted cable, this instrument is innovative in that it uses strain gauges internal to the cabl ...
    Public Domain
  • Silica Dust Sources in Underground MetalNonmetal Mines Two Case Studies
    Silica Dust Sources in Underground Metal/Nonmetal Mines – Two Case Studies
    Chekan, Gregory J. ;
    Colinet, Jay F.
    2002/01/01 | Mining Publications
    NIOSH's Pittsburgh Research Laboratory is currently involved in research to identify silica dust generation in underground metal/nonmetal mines. The ultimate goal of this research is to develop control technologies to reduce worker exposure to respirable silica dust. Commodities and job classifications with the highest silica dust exposure have bee ...
    Public Domain
  • Seismic Event Data Acquisition and Processing Distribution and Coordination Across PCBased Networks
    Seismic Event Data Acquisition and Processing: Distribution and Coordination Across PC-Based Networks
    Swanson, Peter L. ;
    Kenner, Brian
    2002/01/01 | Mining Publications
    NIOSH has developed an automated PC-based seismic event (induced earthquake) monitoring system for use in mine ground control studies. The distribution and coordination of data acquisition and processing functions across a local area network is a central feature of the system. Mine-wide installations utilize multiple, autonomous seismic networks lo ...
    Public Domain
  • Roof Screening Best Practices and Roof Bolting Machines
    Roof Screening: Best Practices and Roof Bolting Machines
    Robertson, Susan B. ;
    Hinshaw, Gregory E.
    2002/01/01 | Mining Publications
    Many injuries are caused each year by rock falls in coal mines. Most of these injuries are not caused by major roof collapses, but from falls of smaller rocks from the immediate top or roof skin. Various surface controls are used in mines to control this surface rock. One that has been found to be very effective is roof screening. Depending on the ...
    Public Domain
  • Use of Ground Penetrating Radar and Schmidt Hammer Tests to Determine the Structural Integrity of a Mine Seal
    Use of Ground Penetrating Radar and Schmidt Hammer Tests to Determine the Structural Integrity of a Mine Seal
    Trevits, Michael A. ;
    Monaghan, William D.
    2002/01/01 | Mining Publications
    Over the years, more than 20,000 mine seals have been erected in underground coal mines in the United States. Seals are used extensively in underground mines to isolate worked-out areas, active mine fire zones, and to control water inundations. Seals are most often built directly in the mine and can be fabricated from blocks made of wood or cementi ...
    Public Domain
44581 - 44600 / 82805