Results 111 - 120 of 646

• Report on Early Strength Performance of Modern Day Weak Rock Mass Shotcrete Mixes
  2/1/2010 - Conference papers
  NIOSH is investigating the use of shotcrete in weak rock mass mines with the objective of reducing fatalities and injuries resulting from rock fall accidents.
• NIOSH Tools For Hearing Loss Prevention Programs
  2/1/2010 - Conference papers
  NIOSH has developed several new hearing loss prevention tools and interventions that specifically target behavioral and attitudinal barriers that keep miners from effectively acting to prevent their own hearing loss.
• Mine Illumination: A Historical and Technological Perspective
  2/1/2010 - Conference papers
  This paper describes the history of mine illumination studies, especially the work done by the former Bureau of Mines.
• A Practical Method of Measuring Shotcrete Adhesion Strength
  2/1/2010 - Conference papers
  This paper presents the results of tests, describes the portable test system, and addresses some of the design issues encountered in the development of a rugged and reliable method for determining shotcrete adhesion strength in underground mines.
• Dust Capture Performance of a Water Exhaust Conditioner for Roof Bolting Machines
  2/1/2010 - Conference papers
  NIOSH conducted a series of laboratory tests using a roof bolting machine to assess the respirable dust capture ability of a water exhaust conditioner as compared to the standard exhaust muffler.
• An Analysis of Fiber-Reinforced Round Panel Strengths and Comparison to Wire Mesh Bag Strength
  2/1/2010 - Conference papers
  This paper explains the results of round determinate panel tests by NIOSH researchers and relates the flexural strength and toughness of fiber-reinforced shotcrete to known energy absorbing properties of wire mesh.
• Straight Line Walking and Path-Turn Identifying Algorithms for a Tracking Device Used in Underground Mines
  1/1/2010 - Conference papers
  This paper describes two algorithms that can provide greater accuracy for underground miner tracking systems.
• Historical Development of Technologies for Controlling Methane in Underground Coal Mines
  1/1/2010 - Conference papers
  This paper discusses several milestone events that show the progress of methane control research in underground coal mines.
• Algorithms to Identify Its Own and Surrounding Tunnels for an Underground Tracking Device
  1/1/2010 - Conference papers
  This paper introduces algorithms to locate miners with no need for external reference sensors. There are definitions of useful mathematical operations that can be performed on the node coordinates and includes a description of the algorithms.
• The Impact of Ground Control Research on the Safety of Underground Coal Miners: 1910-2010
  1/1/2010 - Conference papers
  This paper describes the impact of ground control research by the Bureau of Mines and NIOSH on the safety of underground coal miners.