January 2020
Volume 72    Issue 1

A field study of longwall mine ventilation using tracer gas in a trona mine

Gangrade, V.; Schatzel , S.J.; Harteis, S.P.

ABSTRACT:
Full-text paper: Mining, Metallurgy & Exploration, https://doi.org/10.1007/s42461-019-0096-0
Keywords: Mine ventilation, Longwall mining, Tracer gas 
 
A ventilation research study was conducted by the U.S. National Institute for Occupational Safety and Health (NIOSH) and a cooperating longwall trona mine in the Green River basin of Wyoming in the United States. The objective of the study was to evaluate the movement of longwall face air and exchanges between the face and worked-out areas to document the presence or absence of face airflow pathways between these locations. Tracer gas experiments using sulfur hexafluoride (SF6  ) were conducted to describe air movement on the face and in the mined portion of the active panel. Maintaining adequate ventilation air on longwall faces is important for worker safety and for the dilution of gases emitted from the face and caved gob.
 

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