Links:
[1] http://admin.indiaenvironmentportal.org.in/news/coal-indias-177-mines-downgraded-power-firms-benefit
[2] http://admin.indiaenvironmentportal.org.in/category/author/sumit-moitra
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-news-analysis-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coal
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/national-thermal-power-corporation-ntpc
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coal-india
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kolkata