Methane control in highwall mining.
Handbook for methane control in mining. Pittsburgh, PA: National Institute for Occupational Safety and Health, 2006 Jun; :135-140
This chapter discusses a method to prevent methane explosions during highwall mining. In highwall mining, a horizontal auger or a mining machine enters the coal seam from a surface mine pit at the bottom of a highwall, and the coal is mined out from a series of parallel holes. Explosions can be prevented by injecting inert gas into each hole as it is mined. Coal near the surface has lost most of its methane gas over time. However, in recent years, surface mining has been used for deeper reserves of coal. This trend toward mining deeper reserves has increased the chance of encountering methane, and methane explosions at highwall mining operations have resulted in injuries.
Mining-industry; Methane-control; Safety-research; Coal-mining; Highwall-mining; Methanes; Explosions; Surface-mining
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
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Handbook for Methane Control in Mining