Results 41 - 50 of 97

• Efficiency Improvement Study of Mine Rescue Breathing Apparatus and Development of an Improved Prototype CCBA
  7/19/2016 - Interagency agreements
  An interagency agreement to investigate alternative system designs or current system modifications for mine rescue breathing apparatus, to determine the extent of potential efficiency improvements.
• Design of Underground Mine Seals Under Explosive Events
  7/18/2016 - Contracts and cooperative agreements
  A contract to establish guidelines for mine seal design under static and dynamic loading conditions from gas and/or dust explosions within sealed areas.
• A Case Study of Multi-Seam Coal Mine Entry Stability Analysis with Strength Reduction Method
  3/1/2016 - Peer reviewed journal articles
  This article by NIOSH describes the advantage of using numerical models with the strength reduction method to evaluate entry stability in complex multiple-seam conditions.
• CFD Modeling of Methane Distribution at a Continuous Miner Face With Various Curtain Setback Distances
  7/1/2015 - Peer reviewed journal articles
  A report focused on validating a series of computational fluid dynamics (CFD) models using full-scale ventilation gallery data that assessed how curtain setback distance impacted airflow patterns and methane distributions at an empty mining face.
• Numerical Modeling of Gas Emissions and Cave Ventilation in Block Caving Mines
  11/5/2014 - Contracts and cooperative agreements
  A capacity-building contract focused on developing practical mine ventilation engineering tools for safe and effective massive underground mining operations.
• Case Study of Controlled Recirculation at a Wyoming Trona Mine
  3/1/2014 - Peer reviewed journal articles
  A report detailing the results of two controlled recirculation tests over three days at a Wyoming trona mine, utilizing an inline booster fan to improve airflow to a remote and difficult-to-ventilate development section.
• Proximity Detection: A Continuing Research Imperative
  12/3/2012 - Unpublished documents and reports
  December 3, 2012 feature on proximity detection research
• Improvement of a Mine Fire Simulation Program — Incorporation of Smoke Rollback into MFIRE 3.0
  9/1/2011 - Peer reviewed journal articles
  A modified semi-empirical equation based on large-scale experiments conducted by the National Institute for Occupational Safety and Health (NIOSH) was developed to quantify smoke rollback during an underground mine fire.
• Stochastic Modeling of Gob Gas Venthole Production Performances in Active and Completed Longwall Panels of Coal Mines
  11/1/2010 - Peer reviewed journal articles
  This paper describes a practical approach for implementing stochastic determination of gob gas ventholes production performances and for generalizing the prediction capability of deterministic models.
• A New Method to Calculate Permeability of Gob for Air Leakage Calculations and for Improvements in Methane Control
  6/1/2010 - Conference papers
  This study demonstrates a fractal approach to calculating permeability of gob for air leakage that allows the calculation of porosity and permeability from the size distribution of broken rock material in the gob, which can be determined from image anal...