Results 391 - 400 of 646

• Selected Health Issues in Mining
  2/1/2003 - Conference papers
  This paper briefly discusses the current status and research activities aimed at protecting miners from of some miner health-related issues, including coal and silica dust, diesel, asbestos, noise, lead etc.
• Field Performance Testing of Fully Grouted Roof Bolts
  2/1/2003 - Conference papers
  This paper reports on an extensive series of short-encapsulation pull tests that were conducted in the NIOSH Mine Safety Research Laboratory and operating mines in WV and PA.
• Best Practices and Bolting Machine Innovations for Roof Screening
  2/1/2003 - Conference papers, Safety guidelines, tips, and checklists
  Injury data show a dramatic reduction in roof skin injuries when screening is used. Five case studies in which roof screen was used are presented along with the costs of materials, impact on bolting advance rates, and potential ergonomic risks.
• Designs for Rapid In-Situ Sealing
  2/1/2003 - Conference papers
  Reports on NIOSH full-scale experiments to evaluate the explosion-resistant characteristics of several new seal designs for rapid deployment during mine emergencies.
• Toxic Fume Comparison of a Few Explosives Used in Trench Blasting
  2/1/2003 - Conference papers
  Report on NIOSH studies using a 12-foot diameter sphere to identify key factors that may enhance the levels of CO associated with the detonation of several commercial trenching explosives.
• Comparison of Ore Pass Computer Simulations for Designs Against Dynamic Load
  2/1/2003 - Conference papers
  In this paper, existing ore pass design criteria rules-of-thumb using current particle flow equations are reviewed and a comparison of two computer modeling programs, Working Model (WM 2-D) and PFC2d, to simulate rock flow are investigated.
• Stability of Underground Openings Adjacent to the Sink Hole at the NIOSH Lake Lynn Research Laboratory
  2/1/2003 - Conference papers
  This paper discusses roof monitoring, roof movement, the large roof fall, propagation of roof failures, and the recent support measures to stabilize the escapeway over a portion of the older limestone mine workings at the NIOSH Lake Lynn Laboratory.
• Machine Injury Prediction by Simulation Using Human Models
  1/1/2003 - Conference papers
  Computer human modeling was used to examine machine appendage speed. The objective was to determine the impact of roof bolter machine appendage speed on the likelihood of the operator coming in contact with the appendage.
• Flammability of Noise Abatement Materials Used in Cabs of Mobile Mining Equipment
  1/1/2003 - Conference papers
  Describes the flammability tests conducted on 15 to 20 different noise abatement materials of various chemical compositions and thickness.
• High Stress Mining Under Shallow Overburden in Underground U.S. Stone Mines
  11/1/2002 - Conference papers
  This study of the Chestnut Ridge Anticline found that high levels of horizontal stress are to be expected and that local geologic and topographic structures can alter the magnitude and possibly the orientation of the horizontal stress field.