©2011 MULTI-SCIENCE PUBLISHING CO. LTD. 5 Wates Way, Brentwood, Essex CM15 9TB, United Kingdom ENERGY EXPLORATION & EXPLOITATION Volume 29 2011 Number 4 Estimation of some coal parameters depending on petrographic and inorganic analyses by using Genetic algorithm and adaptive neuro-fuzzy inference systems S. Chehreh Chelgani, F. Dehghan and James C. Hower by reprinted from