With the Orissa government strengthening surveillance on illegal transportation of minerals like iron ore, manganese and chrome ore by rail and road, mines mafias have started air-lifting the materials from the state.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/mines-mafia-now-airlifting-materials-orissa
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/financial-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/minerals
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mineral-based-industry
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/keonjhar-d
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/orissa
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/illegal-trade
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/transport