Results 111 - 120 of 200

• Measurement Method for Determining Absorption Coefficients for Underground Mines
  11/1/2007 - Peer reviewed journal articles
  This paper presents a method using a ray-tracing technique to determine absorption coefficients for underground mines. Absorption coefficients are determined and presented for octave bands from 63 Hz to 8 kHz.
• Real-Time Estimation of Elemental Carbon Emitted from a Diesel Engine
  8/1/2007 - Peer reviewed journal articles
  This paper describes a simple, inexpensive, dependable, and field portable method for estimating the mass concentration of elemental carbon exiting the tailpipe of a diesel engine using a direct reading photometer in underground mines.
• Roof Screening for Underground Coal Mines: Recent Developments
  7/1/2007 - Conference papers
  This paper describes some successful techniques and machine modifications that were evaluated for ergonomic considerations and are being used in productive mines to assist with roof screen installation.
• New Support Concepts for Hard Rock Mining Applications
  4/1/2007 - Conference papers
  This paper presents an overview of recent innovations in support technology for hard rock mining.
• 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).
• Technique to Assess Hazards in Underground Stone Mines: the Roof Fall Risk Index (RFRI)
  1/1/2007 - Peer reviewed journal articles
  A roof-fall hazard-assessment technique was developed based on engineering judgment acquired from extensive underground stone mine experience and on examination of the literature. The technique uses observational processes to assess roof fall hazard.
• Water and Slurry Bulkheads in Underground Coal Mines: Design, Monitoring, and Safety Concerns
  12/1/2006 - Peer reviewed journal articles
  This paper presents the results of NIOSH research to identify state-of-the-art bulkhead designs, including design criteria, leakage monitoring systems, and emergency warning systems.
• Technology News 520 - A Method to Characterize Risk Associated With Mine Roof Conditions
  10/1/2006 - Technology News
  Describes the Roof Fall Risk Index (RFRI), a method of systematically characterizing the risk of roof falls in underground limestone mines.
• The Effects of Water Emulsified Fuel on Diesel Particulate Matter Concentrations in Underground Mines
  6/1/2006 - Conference papers
  The ambient diesel particulate matter (DPM) concentrations (at the intakes and exhausts of the mine) was evaluated as an entire vehicle fleet of a stone mine switched from using 35% biodiesel to a water-emulsified fuel (PuriNOx).
• DEEP Project on Evaluation of Diesel Particulate Filters at Inco's Stobie Mine
  6/1/2006 - Conference papers
  The objective of the Diesel Emissions Evaluation Program (DEEP)-sponsored project at Inco Ltd.'s Stobie Mine was to conduct a long-term field evaluation of diesel particulate filter (DPF) systems available to the underground mining industry. Some of the...