When the oil companies came to give a representation to the Environment Protection Control Authority (EPCA) on the viability of CNG, they were accompanied by officials of the Ministry of Oil,
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/cng-drama-ministry-turns-heat-igl
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution