Coal India Limited (CIL) (BSE: 533278, NSE: COALINDIA) is an Indian state-controlled coal mining company headquartered in Kolkata, West Bengal, India and the world's largest coal miner with revenue exceeding INR60,245 Crore (FY2010-11). It was formerly owned entirely by the Union Government of India, under the administrative control of the Ministry of Coal. It is involved in coal mining and production industry. In April 2011, CIL was conferred the Maharatna status by the Union Government of India and ranked as one of India's most valuable company by market value.
