Coal India Limited is an Indian central public sector undertaking under the ownership of the Ministry of Coal, Government of India. It is headquartered at Kolkata. It is the largest government-owned-coal-producer in the world. The PSU contributes around 82% to the total coal production in India. It produced 554.14 million tonnes of raw coal in 2016–17, an increase from its earlier production of 494.24 million tonnes of coal during FY 2014–15 and earned revenues of ₹95,435 crore from sale of coal in the same financial year. In April 2011, CIL was conferred the Maharatna status by the Government of India, making it one of the seven with that status. As of 14 October 2015, CIL is a PSU owned by the Central Government of India which controls its operations through the Ministry of Coal. As of 14 October 2015, CIL's market capitalisation stood at ₹2.11 lakh crore making it India's 8th most valuable company. CIL ranks 8th among the top 20 firms responsible for a third of all global carbon emissions. Wikipedia