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[1] Martikainen A L,Taylor C D.Breaking the ice on the booster fan dilemma in US underground coal mines[J].Mining Engineering,2010,62(10): 47-53.
[2] Kissell F N,Timko R J.Pressurization of intake escapeways with parachute stoppings to reduce infiltration of smoke[C]//Wang Y J.Proceedings of the 5 th U.S. Mine Ventilation Symposium.Colorado:Littleton,1991.

Memo

Fundation item: Supported by National Institute for Occupational Safety and Health(NIOSH)of USA(200-2009-30328) Corresponding author: Habibi A,Professor,Rolla, MO,Tel: 001-(573)303-6011,E-mail:xztx5@mail.mst.edu