Coal India Limited (CIL)
- Completed 50 years on 1 November 2025 and entered its 51st year.
- Formed in November 1975 as apex holding company for nationalized coal mines.
- HQ: Kolkata.
- A Maharatna PSU under Ministry of Coal.
- Contributes 80% domestic coal production and 75% coal-based production in India.
- Accounts for 55% electricity generation and meets 40% of primary commercial energy ....
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