“…Spontaneous combustion of coal is an important problem in its mining, long distance transportation, and storage, in terms of both safety and economics (Chakravorty and Kolada, 1988;Kaymakci and Didari, 2002;Arisoy et al, 2006). According to Querol et al (2008), although most studies point to oxidation of organic matter as the main cause of coal self-ignition, other factors could also favour or hinder spontaneous combustion.…”