Results 61 - 70 of 282

• Using the Coal Mine Roof Rating (CMRR) to Assess Roof Stability in U.S. Coal Mines
  8/1/2001 - Peer reviewed journal articles
  The CMRR quantifies defects in the rock mass and compiles a strength value used for engineering design. The CMRR has been applied to a number of ground stability problems. The CMRR procedure and some of these applications are described in this paper.
• Proceedings: New Technology for Coal Mine Roof Support
  10/1/2000 - Information Circulars
  The proceedings provide information on several new technologies including guidelines for roof bolt length, pattern, and capacity; a new design method for longwall tailgate supports; and a technique for measuring loads developed within cable bolts.
• Proceedings: New Technology for Ground Control in Retreat Mining
  3/1/1997 - Information Circulars
  This proceedings volume contains papers presented at technology transfer seminars sponsored by the National Institute for Occupational Safety and Health (NIOSH) on New Technology for Ground Control in Retreat Mining.
• Methane Control for Underground Coal Mines
  1/1/1994 - Information Circulars
  This paper describes the history and technology of methane drainage in the US and other countries.
• Theory on the Propagation of UHF Radio Waves in Coal Mine Tunnels
  3/1/1975 - Peer reviewed journal articles
  The theoretical study of UHF radio communication in coal mines, with particular reference to the rate of loss of signal strength along a tunnel, and from one tunnel to another around a corner is the concern of this paper. This work was part of an invest...
• Best Practices for Dust Control in Coal Mining. Second edition.
  8/16/2021 - Information Circulars
  Read about the latest best practices for dust control in coal mining.
• Methane Drainage and Migration
  2/18/2021 - Research areas
  Methane is an odorless, tasteless, colorless, lighter-than-air gas formed by the decomposition of organic and other carbonaceous materials. From 5% to 15% can form an explosive mixture which, if ignited, can have catastrophic consequences.
• Rock Dusting
  1/15/2021 - Research areas
  Rock Dusting Topic Page
• Application of a Convolutional Neural Network for Seismic Phase Picking of Mining-induced Seismicity
  1/1/2021 - Peer reviewed journal articles
  A comparison of a convolutional neural network originally trained to pick arrival times on the Southern California Seismic Network to that of human analysts on coal-mine-related mining-induced seismicity.
• The Impact of Black Lung and a Methodology for Controlling Respirable Dust
  12/1/2020 - Peer reviewed journal articles
  An article discussing the impact of coal workers’ pneumoconiosis, commonly known as black lung, and a general methodology for controlling respirable dust in underground coal mines.