Public sector company named Coal Mines Authority Limited (CMAL) was formed to manage non coking mines
CIL started functioning in 1975 with 5 subsidiary companies under it. These were Bharat Coking Coal Limited (BCCL), Eastern Coalfields Limited (ECL), Central Coalfields Limited (CCL), Western Coalfields Limited (WCL), and Central Mine Planning & Design Institute Limited (CMPDIL).
Mahanadi Coalfields Limited was carved out of South Eastern Coalfields Limited in 1992 with its headquarters at Sambalpur
Miniratna Category - I CPSEs
•Mahanadi Basin Power Limited (SPV)
• MJSJ Coal Limited
• MNH Shakti Limited
• Mahanadi Coal Railway Limited