Eroglu, Huseyin Nehar2017-06-022017-06-021992Eroglu, Huseyin Nehar (1992) Factors affecting the spontaneous combustion index, University of the Witwatersrand,<http://hdl.handle.net/10539/22774>http://hdl.handle.net/10539/22774A thesis submitted to the Faculty of Engineering, University of the Witwatersrand, Johannesburg, in fulfillnent of the requirements for the degree of Doctor of Philosophy, 1992The self-heating of coal is a problem which concerns the mining industry not only in South Africa, but also in many other countries. This thesis deals with the contouring of spontaneous combustion liabilities (WITS-ERAC index values) of different seams at the Durban Navigation Colliery and the relationship between the WITS-EHAC index values and the properties of the coal samples. In the determination of the spontaneous combustion liabilities 58 different coal samples were tested with an ignition-temperature test apparatus, crossing-point temperature tests and differential thermal analysis were conducted simultaneously. [Abbreviated abstract. Open document to view full version]Online resource (269 leaves)enCoal mines and mining--Research--South AfricaCombustion, SpontaneousMine fires--Prevention and controlCoal--CombustionThesis