Results 1 - 8 of 8

• Improving Mine Ventilation and Reducing Contaminant Exposure in Large-Opening Stone Mines
  9/21/2020 - Research projects
  A project to develop practical and economic engineering controls, guidelines, and translational solutions for improving the quality and quantity of airflow in large-opening stone mines.
• Utilization of Booster Fans in Underground Coal Mines
  4/29/2016 - Contracts and cooperative agreements
  A capacity-building contract to research using booster fans in deep coal mines in the western U.S., where coal seams can have over 3,000 ft of overburden causing ventilation and ground control problems.
• Lowering Respirable Dust at an Iron Ore Concentrator Plant Through Improved Ventilation Practices
  6/1/2006 - Conference papers
  A cooperative research effort was established to lower respirable dust levels in an iron ore grinding and concentrator plant. The most significant improvement was realized by changing the ventilation profile throughout the entire facility. Another succe...
• Impact of Fan Type for Reducing Respirable Dust at an Underground Limestone Crushing Facility
  6/1/2006 - Conference papers
  NIOSH researchers have demonstrated that mine-wide ventilation in large-opening stone mines can be improved by using low-pressure, high-volume propeller fans and constructing stoppings in key locations to direct and control airflow.
• Fan Selection For Large-Opening Mines: Vane-Axial Or Propeller Fans - Which To Choose?
  6/1/2006 - Conference papers
  The flow characteristics of both vane-axial and propeller fans were investigated and tested at four large-opening mines to assess the effects of fan location on recirculation and entrainment.
• Technology News 499 - Using Propeller Fans to Improve Ventilation in Large-Entry Stone Mines
  12/1/2002 - Technology News
  This Tech News reports on how the use of propeller fans can significantly improve the ventilation in large entry stone mines due to their efficiency at lower pressures and less required horsepower.
• Jet Fan Ventilation in Very Deep Cuts - A Preliminary Analysis
  1/1/1992 - Reports of Investigations
  This report investigates that application of jet fans to ventilate cuts that extend beyond 40 feet. The results of tests involving a jet fan in a 90 foot entry, its benefits and potential problems are discussed.
• Reverse Performance Characteristics of Main Mine Fans
  8/1/1983 - Open File Reports
  Laboratory and field tests of vane axial main mine fans in the 7- to 9-ft diameter size range were conducted to establish forward and reverse performance characteristics under controlled conditions and at typical mine installations.