Results 51 - 60 of 403

• Final Report of the Technical Study Panel on the Utilization of Belt Air and the Composition and Fire Retardant Properties of Belt Materials in Underground Coal Mining
  12/1/2007 - Unpublished documents and reports
  This final report was prepared by the Technical Study Panel on the Utilization of Belt Air and the Composition and Fire Retardant Properties of Belt Materials in Underground Coal Mining. It provides a review and recommendations concerning the utilizatio...
• Technology News 526 - Proceedings of the International Workshop on Rock Mass Classification in Underground Mining
  7/1/2007 - Technology News
  The International Workshop on Rock Mass Classification in Underground Mining provided a forum for leading practitioners of rock mass classification from around the world to come together and share their methods and experiences with the technique.
• Proceedings of the International Workshop on Rock Mass Classification in Underground Mining
  5/1/2007 - Information Circulars
  The goal of the workshop was to allow leading practitioners of rock mass classification to share their experiences with the technique. The proceedings contain 16 papers from 9 countries. Applications in both hard-rock and coal mining are represented.
• Solutions to Prevent Materials-Handling Injuries in Underground Coal Mines
  2/1/2007 - Peer reviewed journal articles
  This paper describes three mechanical methods - the mobile manipulator, the in-mine hoist, and a cable-handling system - developed by NIOSH to reduce injuries related to handling supplies or material, loading and unloading, and moving power cables.
• Case History of the Response of a Longwall Entry Subjected to Concentrated Horizontal Stress
  2/1/2007 - Peer reviewed journal articles
  A study of ground behavior, reinforcement performance and stress redistribution looked at a longwall tailgate under severe horizontal stress. Comparison to field results showed that a FLAC-2D model captured the significant roof and support behavior.
• A Measurement Method for Determining Absorption Coefficients for Underground Mines
  12/1/2006 - Conference papers
  This paper presents a method using a ray-tracing technique to determine absorption coefficients for underground mines. Absorption coefficients are determined and presented for octave bands from 63 Hz to 8 kHz.
• Knowledge Management and Transfer for Mine Emergency Response
  9/1/2006 - Peer reviewed journal articles
  US coal mining organizations are losing the knowledge they need to be able to respond to emergencies. Knowledge management provides a useful perspective from which to view the problem. Knowledge can be managed by cultivating it through narratives.
• Prediction of Longwall Methane Emissions and the Associated Consequences of Increasing Longwall Face Lengths: A Case Study in the Pittsburgh Coalbed
  6/1/2006 - Conference papers
  NIOSH conducted a study with the goal of characterizing methane emissions from increasing face lengths in the Pittsburgh Coalbed and providing a method of predicting emissions increases from longer faces and of planning for more methane control.
• Predicting Methane Emissions from Longer Longwall Faces by Analysis of Emission Contributors
  6/1/2006 - Conference papers
  NIOSH conducted a longwall methane emission and mining time study at a Pittsburgh Coalbed mine to predict emissions from a longer face, and developed and applied mathematical formulas and constants to characterize four emission contributors.
• Effectiveness of Selected Diesel Particulate Matter Control Technologies for Underground Mining Applications: Isolated Zone Study, 2003
  5/1/2006 - Reports of Investigations
  An underground metal mine study assessed the effects of diesel emissions control technologies (such as DPF systems, diesel oxidation catalytic converter, and biodiesel blends) on concentrations of diesel particulate matter and gases in mine air.