“…The above mentioned samples were taken in order to evaluate their suitability for on-surface gasification in fluidised bed. The properties of coals directed to gasification must comply with the limits (Blaschke, 2009;Borowiecki et al, 2008;Chmielniak & Tomaszewicz, 2012;Kosminski et al, 2006;Lee et al, 2007;Marciniak-Kowalska, 2012-13;Strugała et al, 2011;Strugała & Czerski, 2012;Surowiak, 2013a,b;2014a,b), wherein it must be noted that they are linked with each other. The evaluation of coal suitability for gasification should be therefore conducted multidimensionally with the use of multidimensional distributions of properties and their statistics (Ahmed & Drzymała, 2005;Brożek & Surowiak, 2005, 20072010;Drzymała, 2009;Jamróz, 2009;2014a-c;Jamróz & Niedoba, 2014;Niedoba & Jamróz, 2013;Niedoba, 2009Niedoba, , 2011Niedoba, , 2013aNiedoba, ,b, 2014Niedoba & Surowiak, 2012;Surowiak & Brożek, 2014a,b;Tumidajski, 1997;Tumidajski & Saramak, 2009).…”