BE AWARE AND BE ALERT !!
The Mine Safety and Health Administration – MSHA issued an alert on prevention of fires and explosions in mines during the coming winter months.
Winter Alert 2013:
PREVENTING FIRES & EXPLOSIONS
“Most coal mine gas and dust explosions occur during the fall and winter. During the winter months, cold air entering mines causes mine surfaces to dry out. Cold air is warmed as it travels through the underground mine and picks up moisture from the roof, rib and floor. The result is drier surfaces and drier coal dust. Coal dust and float coal dust can contribute to dust explosion hazards. If suspended in the mine atmosphere, fine, dry coal dust will explode if ignited, even without the presence of methane. Explosions are more likely to happen when the barometer falls because methane gas in unventilated or poorly ventilated areas expands, potentially traveling closer toward ignition sources.” Read more at: http://www.msha.gov/winteralert2013/winteralert2013.asp