Results 241 - 250 of 646

• Factors Affecting the Development of Mine Face Ventilation Systems in the 20th Century
  2/1/2007 - Conference papers
  During the 20th century, the increased emphasis on worker health and safety and the advent of new mining equipment and methods led to many changes in mine face ventilation practices.
• Experimental Study of Flame Spread on Conveyor Belts in a Small-scale Tunnel
  2/1/2007 - Conference papers
  This paper presents experimental results for conveyor belt flame spread from tests conducted in a small-scale tunnel. The purpose of this study is to investigate the effects of certain factors, such as belt type, on the flame spread properties.
• Multiple Seam Longwall Mining in the U.S. - Lessons for Ground Control
  2/1/2007 - Conference papers
  Relatively few longwall mines in the U.S. operate under multiple seam conditions where the two seams are less than 200 ft apart. This paper describes the experience of six that do and lessons learned.
• Protecting Miners from Electrical Arcing Injury
  1/1/2007 - Conference papers
  NFPA 70E is a generally accepted industry guideline document and can be applied to mining workplaces after an analysis of the mine power system electrical arcing hazards has been completed (and Hazard/Risk Categories determined).
• Analysis of Multiple Seam Stability
  1/1/2007 - Conference papers
  Analysis of Multiple Seam Stability (AMSS) is a computer program to help mine planners evaluate potential interactions and reduce the risk of ground failure. This paper details a NIOSH study of multiple seam interactions and the development of AMSS.
• Dangers of Toxic Fumes from Blasting
  1/1/2007 - Conference papers
  This paper reviews the potential hazards from toxic fumes produced by detonating explosives in surface mining and construction operations. Techniques to protect workers and the public from the hazards of explosive-related toxic fumes are discussed.
• Underground Evaluation of Coated Flight Bars for a Continuous Mining Machine
  12/1/2006 - Conference papers
  A highly durable polyurethane coating has been developed for chain flights to decrease noise from metal-on-metal impacts. This paper evaluates this engineering noise control in reducing the noise exposure of continuous mining machine operators.
• Laboratory Investigation of Seat Suspension Design Performance during Vibration Testing
  11/1/2006 - Conference papers
  Researchers performed laboratory studies on four passive and two semi-active seat suspension designs. These six seat suspension systems were tested and analyzed, for vertical vibration only, using the ISO 5007 Standard.
• Numerical Modeling of Paste Sills in Underhand Cut & Fill Stopes
  10/1/2006 - Conference papers
  This paper reviews design methodology in the placement and analysis of sill mats with reference to site observation coupled with on going numerical and analytically derived solutions.
• Musculoskeletal Stress on Miners Performing Roof Screening Operations
  10/1/2006 - Conference papers
  Roof screen is often bolted to the mine ceiling to help control hazardous rock falls in coal mines. This study showed that musculoskeletal stressors during screen installation were reduced by a proposed intervention.