Results 1 - 10 of 73

• ARMPS - Analysis of Retreat Mining Pillar Stability
  8/20/2013 - PC software
  Software for designing pillars for room-and-pillar retreat mining.
• Engineering Considerations and Selection Criteria for Proximity Warning Systems for Mining Operations
  9/19/2012 - Unpublished documents and reports
  A Proximity Warning System (PWS) marker on each worker that is activated as he or she approaches a dangerous area could alert the operator and prevent a potential injury or fatality.
• Pillar Strength in Underground Stone Mines in the United States
  1/1/2011 - Peer reviewed journal articles
  Stone mines in the eastern and midwestern United States use the room-and-pillar method of mining to extract relatively flat-laying sedimentary formations. A survey of pillar performance was carried out to identify potential modes of instability.
• Evaluation of Face Dust Concentrations at Mines Using Deep-Cutting Practices
  1/1/2011 - Reports of Investigations
  Dust surveys determined if deep-cut mining expose face workers to higher levels of respirable dust. Study findings indicate that levels on bolting faces did not appear to be affected by longer cycles associated with deep-cut mining practices.
• The Ground Response Curve, Pillar Loading and Pillar Failure in Coal Mines
  7/1/2010 - Conference papers
  This paper makes use of numerical models to examine the interaction between typical pillar systems and the surrounding rock mass for weak and strong geological conditions at various spans and depths of cover.
• Guidelines for the Control and Monitoring of Methane Gas on Continuous Mining Operations
  4/1/2010 - Reports of Investigations, Safety guidelines, tips, and checklists
  This NIOSH publication demonstrates how existing and new engineering controls can be used to reduce face methane levels.
• Evaluation of the Wet Head Continuous Miner to Reduce Respirable Dust
  2/1/2010 - Conference papers
  This paper describes field tests conducted by NIOSH to evaluate the effectiveness of a wet head continuous mining machine for reducing dust exposure for continuous miner operators.
• Continuous Miner Spray Considerations for Optimizing Scrubber Performance in Exhaust Ventilation Systems
  2/1/2010 - Conference papers
  This paper describes lab experiments to examine the effect of spray type, pressure, machine body blocking sprays, and scrubber airflow on dust and gas levels while using a 12.2 m (40 ft) exhaust ventilation curtain setback from the face.
• Research Report on the Coal Pillar Recovery Under Deep Cover
  2/1/2010 - Unpublished documents and reports
  In the FY 2008 Appropriation (Public Law 110-161), Congress directed NIOSH to conduct "a study of the recovery of coal pillars through retreat room-and-pillar mining practices in underground coal mines at depths greater than 1,500 ft." This report inclu...
• Long-Term Stability of a Backfilled Room-and-Pillar Test section at the Buick Mine, Missouri, USA
  10/1/2009 - Peer reviewed journal articles
  Instruments remaining in a test section of a lead/zinc/copper room and pillar mine where pillar mining had taken place 14 years before were read to monitor long-term stability and quantify time dependent behavior in the mine roof and backfill.