Results 61 - 70 of 85

• Machine Injury Prediction by Simulation Using Human Models
  1/1/2003 - Conference papers
  Computer human modeling was used to examine machine appendage speed. The objective was to determine the impact of roof bolter machine appendage speed on the likelihood of the operator coming in contact with the appendage.
• Roof Screening: Best Practices and Roof Bolting Machines
  8/1/2002 - Conference papers, Safety guidelines, tips, and checklists
  Roof screening has been found to be very effective in controlling the fall of small rocks from the immediate roof surface. Data is presented from two mines that show a dramatic reduction in roof skin injuries when screening is used.
• Drill Monitor With Strata Strength Classification in Near-Real Time
  7/1/2002 - Reports of Investigations
  The process of drilling and bolting the roof is currently one of the most dangerous jobs in underground mining, resulting in about 1,000 accidents with injuries each year in the United States. Researchers from the Spokane Research Laboratory of the Nat...
• An Evaluation of Methods for Controlling Silica Dust Exposures on Roof Bolters
  2/1/2002 - Conference papers
  This paper examines methods for limiting occupational silica exposures for roof bolting personnel in underground coal mining. It also evaluates a metal rake, a flexible insert, and a rigid insert for cleaning the roof bolter dust collector box.
• Reducing Enclosed Cab Drill Operator's Respirable Dust Exposure at Surface Coal Operation With a Retrofitted Filtration and Pressurization System
  2/1/2002 - Conference papers
  This report discusses a cooperative research study performed on a surface drill retrofitted with a new pressurization and filtration system. Respirable dust concentrations were substantially reduced from 0.64 mg/m3 during pre-testing to 0.05 mg/m3 duri...
• The Effects of Low Quartz Mass Loading and Spatial Variability on the Quartz Analysis of Surface Coal Mine Dust Samples
  9/1/2001 - Peer reviewed journal articles
  The objectives of this work are to 1) evaluate the performance of the P7 method on field samples of low quartz mass loadings, 2) evaluate the magnitude of dust mass spatial variability within an enclosed cab environment, and 3) estimate the subsequent p...
• Ignition Hazard From Internally-generated H2 in Sealed Mining Equipment
  7/1/2001 - Peer reviewed journal articles
  A number of ignition incidents involving mining and farm equipment have illustrated the surprising danger of drilling, cutting, or otherwise penetrating sealed compartments or frames that are filled with metal scrap for ballast.
• Verification and Validation of Roof Bolter Simulation Models for Studying Events Between a Machine and its Operator
  6/1/2001 - Conference papers
  This paper presents the results of a study to verify and validate a computer model that represents and analyzes motions and hazardous events in a simulated three-dimensional workplace. The purpose of the computer model is to support research that is in...
• Laboratory Evaluation of a Canopy Air Curtain for Controlling Occupational Exposures of Roof Bolters
  6/1/2001 - Conference papers
  Testing at NIOSH assessed the effectiveness of a canopy air curtain for controlling occupational exposures to respirable silica and coal dusts.
• Field Assessment of Retrofitting Surface Coal Mine Equipment Cabs with Air Filtration Systems
  8/1/2000 - Conference papers
  Operator cabs on a front-end loader and a rotary rock drill were retrofitted with ceiling mounted heating/AC units and air filtration systems.