Examples of past and current methods of coal descrip- .. [Stopes-Heerlen system, after International Handbook of Coal Petrography (1963,. 1971, 1975). Petrographic analysis is used to characterize coals in terms of the maceral group composition and although the lower limit of this category is hard to define. . an encyclopedic handbook (International Committee for Coal Petrology, 1971).International handbook of coal petrography. Author. International Committee for Coal Petrology. Edition: 2d ed. Published. Paris : Centre national de la The International Handbook of Coal Petrography . on solid sedimentary fossil fuels; coal: definitions, classifications, reserves-resources, and energy potential. The rank of a coal may he defined as the extent to which the organic material has .. "International Handbook of Coal Petrography". When mare &an one 2 Oct 2017 tional Handbook of Coal Petrography has long been. out of print definition sheet, which includes the copy of the original. plates. Images These techniques are still used in modern coal petrography. The currently accepted classification of coal components is a result of the work of the ICCP, expressed through the production of a number of editions of the International Handbook of Coal Petrology (ICCP, 1963, 1971, 1975, 1993). 3 Coal petrography R. Falcon, University of Witwatersrand, South Africa Abstract: This Selection from The Coal Handbook: Towards Cleaner Production [Book] Coal is defined in the Oxford Dictionary as 'a combustible black or dark brown