name the major oil fields and coal mines in India?
1) Major oil fields in India are Mumbai High, Ankleshwar in Gujarat, Digboi, Naharkatiya, Moran – Hugrijan in Assam etc
2) Major coal mines are found in Gondwana, Jharia, Raniganj, Bokaro, and coal deposits are found in Godavari, Mahanadi, Son and Wardha valleys. Tertiary coal occur in Meghalaya, Assam, Arunachal Pradesh, etc