Coal India
Coal India Limited is an Indian state-owned coal mining and refinery company headquartered in Kolkata, West Bengal, India and the largest coal-producing company in the world and a Maharatna company. The company contributes to around 82% of the coal production in India.
Coal India Ltd. operates as mining company. It engages in the production and sale of coal. The company was founded in November 1975 and is headquartered in Kolkata, India.
