Results 21 - 30 of 44

• A Control Suite to Reduce Roof Bolting Machine Drilling Noise
  4/1/2010 - Conference papers
  NIOSH conducted research to reduce the noise emission of various underground coal-mining equipment and developed a suite of controls to reduce drilling noise.
• The Development of a Damped Drill Steel to Reduce Roof Bolting Machine Drilling Noise
  4/1/2010 - Conference papers
  The paper documents NIOSH research to date of a damped drill steel on a roof bolting machine.
• Mine Roof Bolting Machine Safety: Investigation of Roof Bolter Boom Swing Velocity
  2/1/2010 - Information Circulars
  This report describes a study of operator movement relative to the motion of a roof bolting machine boom arm. This work was aimed at reducing the risk of injury to underground coal mine workers from moving machinery.
• 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.
• Development of Roof-Bolting Machine Bit and Chuck Isolators for Drilling Noise Reductions
  11/1/2009 - Conference papers
  NIOSH is developing bit and chuck isolators to reduce vibration, and thus noise radiation of the drill steel, with the longer-term goal of reducing roof bolting machine operator noise exposure.
• Noise Controls For Roof Bolting Machines
  1/1/2009 - Peer reviewed journal articles
  This paper describes NIOSH research to evaluate noise generated by a roof bolting machine and its components. Results are given for two engineering controls for the roof bolting machine: a bit isolator and a drill chuck isolator.
• A Noise Control for A Roof Bolting Machine: Collapsible Drill Steel Enclosure
  7/1/2008 - Conference papers
  This paper describes and evaluates an engineering noise control for the roof bolting machine, namely the collapsible drill steel enclosure.
• Laboratory and Field Evaluation of Dust Collector Bags for Reducing Dust Exposure of Roof Bolter Operators
  7/1/2008 - Peer reviewed journal articles
  This paper presents the results of NIOSH laboratory and field tests to evaluate the effectiveness of dust collector bags for reducing dust liberation and operator exposure from a roof bolter's dust collection system.
• Results of Noise Measurements from Underground Testing of a Roof Bolting Machine Duty Cycle
  10/1/2007 - Conference papers
  This paper evaluates the duty cycle of a typical roof bolting machine operation at two coal mines. The results provide insight into which portion of the operators’ duty cycle is the most prominent contributor to noise exposure.
• Upper Extremity Joint Moment and Force Predictions When Using a Joystick Control
  6/1/2007 - Conference papers
  This paper discusses the application of digital human models to examine computer-generated forces necessary to move specific joysticks by using roof bolter virtual operators to predict the forces experienced on the operator's upper extremities.