Description : Coal mines were Nationalized in the year : (1) 1970 (2) 1971 (3) 1972 (4) 1976
Last Answer : (3) 1972 Explanation: The Coal Conservation and Development Act, 1974 provides for imposition of excise duty on coal despatches for meeting activities like conservation of coal, development of coal ... and assistance in mining operation. The Coking Coal (Nationalisation) Act was enacted in 1972.