Description : "Ankleshwar' is known for – (1) Gold (2) (2) Coal (3) Gas (4) Oil
Last Answer : (4) Oil Explanation: Digboi is a town and a town area committee in Tinsukia district in the northeastern part of the state of Assam. Today, though the crude production is not high, Digbot has ... , now a division of Indian Oil Corporation, is the world's oldest oil refinery still in operation.