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Mining Publication: Safety Concerns Associated With the Use of Electrically Powered Haulage to Remove Workers from Mines During Main Fan Stoppages
Keywords: Conveyors Evacuation Personnel carriers Underground mining
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: October 2002
Authors: CD Taylor, RJ Timko, ED Thimons, JA Zimmer
Conference Paper - October 2002
Download PDF Document (0.37 MB)
NIOSHTIC2 Number: 20023154
In: De Souze E, ed. Mine Ventilation: Proceedings of the North American/Ninth U.S. Mine Ventilation Symposium (Kingston, Ontario, Canada, Jun 8-12, 2002). Lisse, The Netherlands: A. A. Balkema; 2002 Oct; :649-653
The roles of main mine fans in underground mines are to induce airflow and continuously remove hazardous gases and dust. While most larger mines use multiple fans to accomplish these tasks, many smaller mines employ only a single fan. This paper concentrates on those mines having only one fan to provide ventilation needs. If this fan should cease to function, it is likely that methane concentrations will increase in some areas of the mine. As a safety precaution, Federal Regulations require that personnel must begin evacuating the mine within fifteen minutes after fan stoppage. Powered haulage can be used to transport workers to the mine portal as long as travel is through areas where hazardous levels of methane are not expected. To determine where methane will accumulate along haulageways during a fan stoppage, air samples must be taken at specific areas and analyzed for hazardous gases. During this study, procedures were developed for measuring methane levels along haulageways that are used to exit a mine following stoppage of the main mine fan. Methane levels were measured in four different mines at selected underground locations during four planned fan stoppages. In these mines the measurements taken only at the specified locations showed that, if workers had used electrically powered haulage to exit the mine following a fan stoppage, the methane accumulated along haulageways during fan stoppages would not have significantly increased the risk of an ignition.
Image of publication Safety Concerns Associated With the Use of Electrically Powered Haulage to Remove Workers from Mines During Main Fan StoppagesConference Paper - October 2002
Download PDF Document (0.37 MB)
NIOSHTIC2 Number: 20023154
In: De Souze E, ed. Mine Ventilation: Proceedings of the North American/Ninth U.S. Mine Ventilation Symposium (Kingston, Ontario, Canada, Jun 8-12, 2002). Lisse, The Netherlands: A. A. Balkema; 2002 Oct; :649-653
See Also
CFD Modeling of Fire Spread Along Combustibles in a Mine Entry
Development and Testing of a Mine Escape Vehicle (MEV)
Emergency Escape and Refuge Alternatives
Final Report of the Technical Study Panel on the Utilization of Belt Air and the Composition and Fire Retardant Properties of Belt Materials in Underground Coal Mining
Mine Escape Vehicle Concept Investigation
Mine Escape Vehicle Technology Retrofit Demonstration
Refuge Alternatives in Underground Coal Mines
Responders to Underground Mine Fires
Smoke, Carbon Monoxide, and Hydrogen Chloride Production from the Pyrolysis of Conveyor Belting and Brattice Cloth
Wireless Mesh Mine Communication System
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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