Coal mining in India - Wikipedia
Coal mining in India began in 1774 when John Sumner and Suetonius Grant Heatly of the East India Company commenced commercial exploitation in the Raniganj Coalfield along the Western bank of Damodar river.
Coal India - Wikipedia
Coal India Limited (CIL) is an Indian state-controlled coal mining company headquartered in Kolkata, West Bengal, India and the largest coal-producing company in the world and a maharatna company.
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