Ministry says the PSU did not have green clearance for expansion.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/norms-violated-sccl-now-under-radar-ministry-environment-and-forests
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/new-indian-express-hyderabad
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/telangana
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment-act-1986
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/regulations
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment-impact-assessment-eia
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coal
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-pollution
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment