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With economic liberalization and consequent reduction of import duty on coal, India can no longer rely on opencast ... underground coal sector in India ... decide the ...
With economic liberalization and consequent reduction of import duty on coal, India can no longer rely on opencast ... underground coal sector in India ... decide the ...
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Solar or Coal? The Energy India Picks May Decide ... A scavenger carries coal out of an opencast mine ... BCCL''s most technologically advanced underground ...
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