Links:
[1] http://admin.indiaenvironmentportal.org.in/news/12-labourers-killed-sikkim-dam-collapse
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/assam-tribune-guwahati
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dams-irrigation
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-disasters
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sikkim
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/east-sikkim