Landman, Gysbert van Rooyen2015-03-242015-03-242015-03-24http://hdl.handle.net/10539/17313Thesis (Ph.D. (Mining Engineering))--University of the Witwatersrand, Faculty of Engineering,1992.enMine explosions--South AfricaCoalbed methane--South AfricaMine dustsCoal mines and mining--Safety measuresMine fires--South AfricaCoal mines and mining|zSouth Africa.Thesis