Open Access Research Paper Views (609) Quantitative and qualitative characterization of coal formations expansion in Iran; introducing and case study: coal mines of East Azarbaijan coal-bearing zone Adel Afkhami Nahand J. Biodiv. & Environ. Sci. 6(6), 493-500, June 2015. Keywords: Coal, Kaliber, Khattab, Maragheh, Methane Details
