Results 61 - 70 of 273

• Structural Vibration as a Noise Source on Vibrating Screens
  11/1/2009 - Conference papers
  For horizontal vibrating screens, NIOSH testing indicates that the screen sides and feed box are dominant noise sources for the 250 Hz through 800 Hz one-third octave bands, while the electric motor is the most significant source for the 1 kHz band.
• Cementitious Plug Seal/Rock Interface Under Static and Dynamic Loadings
  10/1/2009 - Conference papers
  The objective of this research is to estimate the cementitious seal/rock interface properties from full scale test results.
• Coal Bumps and Odd Dynamic Phenomena - A Numerical Investigation
  7/1/2009 - Conference papers
  This study extends the method of dynamic analysis to events driven by slip on geologic features.
• Deep Cover Pillar Recovery in the US
  7/1/2009 - Conference papers
  This paper provides an overview of current deep cover pillar recovery practice.
• Evaluation of Tailgate Ground and Support Interaction in the Illinois Basin for the Development of a Ground Reaction Curve Based Standing Support Design
  7/1/2009 - Conference papers
  As part of an effort to obtain more field data on longwall tailgate and support interaction, a study was conducted at a longwall mine in the Herrin No. 6 coal seam in southern Illinois.
• Modeling Methane Emissions and Ventilation Needs by Examination of Mining Induced Permeability Changes and Related Damage to Ventilation Controls
  6/1/2009 - Conference papers
  This paper aims to examine the effects of porosity and permeability changes of the coal seam on methane emissions in an underground continuous miner section.
• Testing and Evaluation of an Inflatable Temporary Ventilation Control Device
  2/1/2009 - Conference papers
  This paper describes an inflatable temporary mine sealing technology and presents the results of NIOSH tests on the device.
• Understanding Mine Fire Disasters by Determining the Characteristics of Deep-Seated Fires
  2/1/2009 - Conference papers
  This paper describes the fire tests, provides insight into characteristics of flame spread, and presents the CFD modeling work results of tests to help determine the characteristics for deep-seated fires.
• Investigation into the Practical Use of Belt Air at US Longwall Operations
  2/1/2009 - Conference papers
  This paper discusses the current ventilation practices regarding the use of belt air during gateroad development and longwall panel extraction.
• Current Trends in Reducing Ground Fall Accidents in US Coal Mines
  2/1/2009 - Conference papers
  Each of the electronic versions of the MSHA fatality reports since 1995 was analyzed in detail, categorized by the type of the ground fall hazard. The remainder of the paper is devoted to evaluating each of the five largest categories.