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In Jharia coalfield, nearly 1250 Mt of coking coal has been devolatilized due to igneous intrusives and ∼ 1900 Mt due to mine fires. This paper is an effort to investigate the effect of carbonization in two intrusive affected coal seams of Ena (seam XIII) and Alkusa (seam XIV) collieries of this coalfield. Through petrographic studies by microscopy, characterization of normal and heat-affected coals...
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