| A Better Noise Compliance Method and Validation of Mine Noise Dosimetry Data |
JUN 2005 |
18 pages |
| Authors:
Jeremy M. Slagley; Steven E. Guffey; WEST VIRGINIA UNIV MORGANTOWN DEPT OF INDUSTRIAL ENGINEERING
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 | Given the costs of Noise-Induced Hearing Loss in mining, and MSHA's proactive attention given to all mines, an average exposure determination may be more appropriate for compliance decisions than the current shift-by-shift basis. If dose averages are used, database errors must be minimized. Errors in dosimetry data can be detected by a variety of means, including: 1. from an understanding of the mathematics relating action level doses to permissible exposure ... |
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| Active Noise Control of Stageloader Noise in Longwall Mining |
10 FEB 2005 |
22 pages |
| Authors:
Jeremy M. Slagley; Steven E. Guffey; WEST VIRGINIA UNIV MORGANTOWN DEPT OF INDUSTRIAL ENGINEERING
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| With the large-scale mechanization inherent to the mining industry, noise-induced hearing loss remains a major concern. As part of on-going efforts to develop engineering controls to reduce noise levels in longwall mining, active noise control experiments were conducted above ground on a modified non- working stageloader. Recorded underground stageloader noise was broadcast into the above ground stageloader. The result was an average 7 dBA reduction when the active noise control ... |
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| Proposed Additions to Ventilation Duct-Design Procedures |
25 AUG 2004 |
19 pages |
| Authors:
Jeremy M. Slagley; WEST VIRGINIA UNIV MORGANTOWN
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| The "duct design" methods describe in Industrial Ventilation (IVM) are designed to aid practitioners in selecting appropriate duct "sizes" (i.e., duct cross-sectional areas) and in selecting a fan for the system. With the exception of so-called "branch entry coefficients," the loss coefficients used in IVM are based on laboratory studies of individual components of the system (e.g., elbows, straight ducts, hood entries, etc.). The branch entry coefficients are based on ... |
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| A Study of the Response of Two Aerosol Photometers When Assessing Organic and Inorganic Dust Concentrations Relative to Standard Gravimetric Methods |
22 AUG 2000 |
68 pages |
| Authors:
Jeremy M. Slagley; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
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| The purpose of this project was to determine the utility of direct reading aerosol photometers for organic dust environments. The study compared the response of two photometers to organic vs. inorganic dust. The results could be explained by the photometer theory to determine the most important aspects of photometric dust exposure assessment in agriculture. The MiniRAM and the HAM were exposed to organic corn grain dust for ... |
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