Coal India Limited (CIL) the state-owned coal mining corporate came into being in November 1975. CIL, today is the single largest coal producer in the world and one of the largest corporate employer with manpower of 228,861 (as on 1st April, 2024). CIL functions through its subsidiaries in 84 mining areas spread over eight (8) states of India. CIL functions through its subsidiaries in 84 mining areas spread over eight (8) states of India. Coal India Limited has 313 mines (as of 1st April 2024) of which 131 are underground, 168 opencast, and 14 mixed mines and also manages other establishments like workshops, hospitals, and so on.