Results 301 - 310 of 646

• Hearing Loss in the Mining Industry: Overview of the NIOSH Hearing Loss Prevention Program at the Pittsburgh Research Laboratory
  10/1/2005 - Conference papers
  This paper provides an overview of the NIOSH hearing loss prevention program being conducted at NIOSH PRL.
• Bone Mineral Content and Fatigue Failure of Lumbar Motion Segments in Simulated Flexed Lifting: Does Specimen Age Influence the Relationship?
  9/1/2005 - Conference papers
  This paper compares the fatigue failure responses of older versus younger lumbar spine cadaver motion segment specimens.
• Evaluation of the Impact of Standing Support on Ground Behavior in Longwall Tailgates
  8/1/2005 - Conference papers
  The conclusion drawn from this study was that standing supports do not have sufficient capacity to control main roof or floor loading or prevent the resulting convergence of the tailgate entry.
• Failure Mechanics of Multiple Seam Mining Interactions
  8/1/2005 - Conference papers
  This research seeks to provide design guidelines that enable mine planning engineers to assess the safety risk of an adverse multiple seam mining interaction based on mine geometry factors, mine layout factors, and site specific geologic conditions.
• Analysis of Highwall Mining Stability - The Effect of Multiple Seams and Prior Auger Mining on Design
  8/1/2005 - Conference papers
  The objective of this is paper is to review the current state of knowledge and practice in highwall mining.
• Multiple Seam Mining Interactions: Case Histories from the Harris No. 1 Mine
  8/1/2005 - Conference papers
  Results show that the remnant upper seam structure's size can influence multiple seam interaction. Specifically, smaller critically loaded upper seam pillars appear more likely to cause lower seam ground control problems than wider pillars.
• Forecasting Roof Falls with Monitoring Technologies - A Look at the Moonee Colliery Experience
  8/1/2005 - Conference papers
  Monitoring technology and techniques can provide a means to warn of hazardous roof fall conditions. Measuring roof deflection is the most common method of detecting roof instabilities.
• Assessment of Ground Conditions Near a Mine Portal Using Ground Penetrating Radar
  8/1/2005 - Conference papers
  The objective of this work was to determine if GPR could be used to help assess the mine roof conditions near the No. 4 Portal area of the NIOSH Lake Lynn Experimental Mine (LLEM).
• Analysis and Design of Rib Support (ADRS): A Rib Support Design Methodology for Australian Collieries
  8/1/2005 - Conference papers
  This paper summarises the results of a research project whose goal was to provide the Australian coal industry with a rib support design methodology and software tool that could be utilised by suitably qualified colliery staff.
• Investigation of Fully Grouted Roof Bolts Installed Under In Situ Conditions
  8/1/2005 - Conference papers
  NIOSH continues to investigate the behavior of fully grouted roof bolts in the weak roof rock of Pittsburgh's Safety Research Coal Mine. This paper describes the results of three roof bolt studies.