Results 51 - 60 of 85

• Technology News 525 - NIOSH Releases New Skills Training Aid: Walk-Thru Roof Bolting Machine Trainer's Guide
  6/1/2007 - Technology News
  NIOSH has released a new report entitled "Roof Bolting Machine Operators Skills Training for a Walk-Thru Roof Bolter: Trainer's Guide" (IC 9489). It is designed to help safety trainers develop structured training for new operators of walk-thru bolting m...
• In-Cab Noise Reduction on an Air-Rotary Drill Rig
  5/1/2007 - Peer reviewed journal articles
  This paper summarizes a NIOSH investigation of engineering noise controls to reduce sound levels in cabs on air-rotary drill rigs. Results revealed that some drillers are exposed to A-weighted sound levels exceeding 85 dB even though a cab is used.
• Technology News 523 - Evaluation of Dust Collector Bags for Reducing Dust Exposure of Roof Bolter Operators
  2/1/2007 - Technology News
  Objective: To evaluate the effectiveness of dust collector bags for reducing dust liberation from a roof bolter dust collection system.
• Roof Bolting Machine Operators Skills Training for a Walk-Thru Roof Bolter: Trainer's Guide
  8/1/2006 - Information Circulars
  This trainer's guide is designed as a reference manual. The purpose is to offer information and examples to skills trainers to assist them in structuring training for new operators of Walk-Thru roof bolting machines.
• 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.
• Computer Simulations Help Determine Safe Vertical Boom Speeds for Roof Bolting in Underground Coal Mines
  10/1/2005 - Peer reviewed journal articles
  NIOSH researchers successfully developed a computer model that generates contact data by means of simulation while exercising the model with several variables associated with the machine and its operator.
• Mining Roof Bolting Machine Safety: A Study of the Drill Boom Vertical Velocity
  5/1/2005 - Information Circulars
  This report examines the boom arm vertical speed for roof bolting machines to study a moving boom arm appendage at different speeds during different work scenarios. The goal of this study is to determine the impact of the appendage speed on the likeliho...
• Reducing Enclosed Cab Drill Operator's Respirable Dust Exposure with Effective Filtration and Pressurization Techniques
  1/1/2005 - Peer reviewed journal articles
  Discusses a cooperative research effort to lower respirable dust levels in an enclosed cab on an older surface drill at a silica sand operation. A number of modifications were incorporated into the drill's filtration and pressurization system, as well a...
• Assessment of Noise Controls Commonly Used on Jumbo Drills and Bolters in Western United States Underground Metal Mines
  1/1/2005 - Peer reviewed journal articles
  The noise-control treatments most commonly observed on drills and bolters during this study were evaluated on machines at underground metal mines to determine the amount of noise reduction achieved by each control.
• Wearing Hearing Protection Properly: A 3-D Training Aid for Drillers
  11/1/2004 - Information Circulars
  This instructor's manual supplements the Wearing Hearing Protection Properly 3-D training reel. It offers tips on using the reel as a training aid, assessing training needs, and discussion notes that provide additional information to the user.