South Eastern Coalfields Limited is a wholly-owned subsidiary of Coal India Limited - One of the largest government owned coal producer in the world. SECL is one of the highest coal producing companies of India. The coal mines of SECL are spread across two states namely Chhatisgarh and Madhya Pradesh. SECL operates 67 coal mines , of which 41 coal mines lies in Chhatisgarh State, while rest 26 coal mines are situated in Madhya Pradesh state. And of these 67 nos of coal mines ,46 mines are worked by underground method of mining while rest 21 no of mines are Opencast mines. (As on 01.04.2022) Along with this, SECL is committed towards operational aspect of coal carbonization plant of Dankuni coal complex however ,Dankuni coal Complex at Dankuni,West Bengal has been given on lease basis by CIL. For effective administrative control and operation, coal mines at SECL has been divided into three groups viz Central India coalfields (CIC), Korba coalfields and Mand Raigarh Coalfields.