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Coal classification: Coal classification, any of various ways in which coal is grouped. Most classifications are based on the results of chemical analyses and ...
1 THE COAL MINES REGULATIONS, 1957 S.R.O.3419 dated the 24th October, 1957 – In exercise of the powers conferred by section 57 of the Mines Act, 1952 (35 of 1952 ...
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Over 7269 million tonnes (Mt) of hard coal are currently produced worldwide and 787 Mt of lignite. Coal is mined by two methods: surface or 'opencast' mining, and ...
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