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- Research methods and measures:
- Airflow
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1/1/2004 - Peer reviewed journal articlesReports on a test system and computer program developed for using a three-axis ultrasonic anemometer to measure airflow in a simulated mine entry.
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12/1/2002 - Technology NewsThis Tech News reports on how the use of propeller fans can significantly improve the ventilation in large entry stone mines due to their efficiency at lower pressures and less required horsepower.
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6/1/2001 - Conference papersA series of controlled laboratory tests were conducted in a test stand simulating shield dust entrainment to evaluate changes in airborne respirable dust levels at different air velocities.
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2/1/2001 - Technology NewsHigher efficiency air filters provide good dust control for the equipment operator, but tend to accumulate dust more quickly than lower efficiency air filters.
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2/1/2001 - Conference papersLaboratory test to simulate dust liberation during shield movement were conducted.
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2/1/1999 - NIOSH/USBM numbered publicationsThe effect of wind speed upon aerosol penetration into an idealized enclosure was studied.
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8/1/1983 - Open File ReportsLaboratory and field tests of vane axial main mine fans in the 7- to 9-ft diameter size range were conducted to establish forward and reverse performance characteristics under controlled conditions and at typical mine installations.
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12/1/1982 - Reports of InvestigationsSulfur hexafluoride (SF6) is an odorless, colorless, nontoxic gas that has found acceptance as a tracer gas in research on ventilation patterns, measurement of air leak rates, respirable dust reductions due to bagging hood modifications, and the study o...
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1/1/1974 - Reports of InvestigationsThe Bureau of Mines has successfully used sulfur hexafluoride (SF6) as a tracer gas to measure mine air flows under conditions where conventional methods have failed. SF6 was employed experimentally to measure accurately recirculation of return into int...
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1/1/1960 - NIOSH/USBM numbered publicationsThis bulletin is written to explain in layman language the basic laws and fundamentals of mine airflow and their application to the solution of common ventilating problems. The attempt is to reduce the complex and difficult ventilating formulas to simpl...
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Content source: National Institute for Occupational Safety and Health, Mining Program