Results 1 - 10 of 12

• Analysis of a Mechanism Suspension to Reduce Noise from Horizontal Vibrating Screens
  11/1/2011 - Peer reviewed journal articles
  The National Institute for Occupational Safety and Health (NIOSH) is developing noise controls to reduce noise generated by horizontal vibrating screens.
• Acoustic Assessment of Pneumatic and Electric Jackleg Drills used in the Mining Industry
  4/1/2010 - Conference papers
  This paper presents an acoustic assessment of pneumatic and electric jackleg drills involving Noise Source Identification (NSID), penetration rate measurements, operator’s cumulative noise dose measurements, and determination of sound power levels.
• A Technique for Estimating the Sound Power Level Radiated by Pneumatic Rock Drills and the Evaluation of a CSIR Prototype Rock Drill with Engineering Noise Controls
  5/1/2009 - Peer reviewed journal articles
  This report describes research by NIOSH to reduce the noise exposures of jackleg drill operators and to prevent additional cases of noise induced hearing loss (NIHL) by developing and evaluating low-cost retrofit noise controls for equipment.
• 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.
• Continuous Mining Machine Conveyor System Sound Power Levels
  7/1/2008 - Conference papers
  This paper describes the results of different chain types and configurations installed on a continuous mining machine conveyor system and the resulting sound power levels.
• Determining Underground Roof Bolting Machine Operators Noise Exposure Using Laboratory Results
  10/1/2007 - Conference papers
  This paper provides a method for predicting sound pressure levels at the operator’s position of a roof bolting machine in an underground coal mine using sound power levels determined in the laboratory.
• Limestone Mining: Is It Noisy or Not?
  10/1/2006 - Peer reviewed journal articles
  This article describes noise research conducted in limestone mines, detailing the equipment likely to cause worker overexposures, the occupations experiencing overexposures, and the implications for worker noise exposure reduction.
• Assessment and Evaluation of Noise Controls on Roof Bolting Equipment and a Method for Predicting Sound Pressure Levels in Underground Coal Mining
  1/1/2006 - Theses/Dissertations
  This paper describes a research program implemented to measure sound power levels radiated by a roof bolting machine during differing drilling configurations and utilizing differing types of drilling methods in high compressive strength rock media.
• Sound Power Level Study of a Roof Bolter
  1/1/2006 - Peer reviewed journal articles
  NIOSH initiated a study of a roof bolter to reduce noise exposure to mine roof bolter operators. When drilling into granite, it was found that wet drilling generated lower sound power levels and performed better than vacuum drilling.
• Design and Instrumentation of a Large Reverberation Chamber
  6/1/2003 - Conference papers
  Documents the refurbishing and instrumentation of the PRL reverberation chamber to bring it up to compliance with the ISO 3743-2 standard for engineering grade measurements for broadband noise.