Results 581 - 590 of 646

• Effects of Lifting in Four Restricted Postures
  9/1/1997 - Conference papers
  The purpose of this study was to examine the lifting capacity of low-seam coal miners in four restricted postures (roof heights of 36", 40", 44", and 48"), investigate the associated metabolic costs, and to examine electromyographic (EMG) data from eigh...
• Fire Protection Provided by Detonator Containers
  9/1/1997 - Conference papers
  The research reported here is an attempt to quantify the fire protection offered by four inches of red oak and other materials.
• Development of a Statistical-Analytical Approach for Assessing Coal Bump Potential
  8/1/1997 - Conference papers
  Researchers from private industry and NIOSH have studied mechanisms of violent failure and have identified individual factors that contribute to coal bumps. They initiated a comprehensive study to develop tools for assessing coal bump potential.
• Simplified Pre- and Post-Processing Technique for Performing Finite-Element Analyses of Deep Underground Mines
  8/1/1997 - Conference papers
  Demonstration of a technique developed at the Spokane Research Center that allows the user to create a finite-element model of a two-dimensional section of an underground mine in a relatively straightforward manner.
• A Method for the Selection of Rock Support Based on Bolt Loading Measurements
  8/1/1997 - Conference papers
  A method to assist in the evaluation and selection of roof bolts using in situ measurements of roof bolt loading has been developed by researchers of the Spokane Research Center, National Institute for Occupational Safety and Health.
• Ergonomic Seat With Viscoelastic Foam Reduces Shock on Underground Mobile Equipment
  6/1/1997 - Conference papers
  This paper describes the underground mine trials and the testing done to evaluate properties of the viscoelastic foams. The paper also discusses the development of an analytical model using the data from underground trials and the foam testing.
• Geotechnical Factors Influencing Violent Failure in U.S. Mines
  3/1/1997 - Conference papers
  Sudden, violent failures of rock around mine openings influence access, ventilation, and safety in both hard-rock and coal mines. The authors initiated a comprehensive study to develop predictive tools for assessing potential rock failure.
• Analysis and Prediction of Longwall Methane Emissions: A Case Study in the Pocahontas No. 3 Coalbed, VA
  2/1/1997 - Conference papers
  Increasing longwall panel dimensions, particularly face width in gassy coalbeds, may result in unexpected increases in methane emissions. To investigate this problem, continuous longwall face emission monitoring studies were conducted at two adjacent mi...
• Overview of U.S. Research on Three Approaches to Ensuring That Coal Miners Work Safely: Management, Workplace Design and Training
  2/1/1997 - Conference papers
  This paper summarized the past 20 years of U.S. research to ensure that underground coal miners work safely.
• Control and Monitoring of Gas in Blind Auger Headings
  2/1/1997 - Conference papers
  Deeper surface mining and deeper highwall penetration depths have lead to more frequent encounters with methane gas. While this coal is remotely mined from the surface, underground ignitions of methane have propagated to the surface and injured miners. ...