Home ONGC Discovered Huge Petroleum Oil Deposits in Bihar's Kishanganj2 ONGC Discovered Huge Petroleum Oil Deposits in Bihar’s Kishanganj2 by Prashanth Damarla 6 years ago6 years ago ONGC Discovered Huge Petroleum Oil Deposits in Bihar’s Kishanganj ONGC Discovered Huge Petroleum Oil Deposits in Bihar’s Kishanganj