Coal: Jharia, Chandrapura, Bokaro, Giridih (Jarkhand), Ranigunj and Asansol (West Bengal), Singrauli (M.P.), Korba (Chhattisgarh), Singareni (A.P.) : Talcher and Rampur Himgir (Odisa) and Chand coal field (Maharashtra).
Petroleum : Digboi, Hugrijan, Moran, Naharkatiya, Sibsagar, Rudrasagar and Badarpur (Asom), Bombay High (Maharashtra), Ankleshwar, Kosamba, Kalol, Mehsana, Navagam and Dholka (Gujarat), Krishna and Godavari river basins (A.P.)
Natural gas: Cambay and Ankleshwar fields (Gujarat) and Bombay High (Maharashtra), Coastal Andhra Pradesh.
