Spread across West Bengal, Jharkhand, Bihar and Odisha, the estimated coal resource of these 44 new blocks is close to 25,000 million tonnes, GSI's east ADG R K Kisku said.
"The GSI has located 44 coal blocks spread across West Bengal's Purulia and Birbhum districts, coal city of Talcher in Odisha, Bihar's Bhagalpur and Jharkhand's East Bokaro and south Karanpura," he said.
Of these 44, 15 coal blocks belong to West Bengal.