It was initially worked by underground method but after nationalisation it was converted to an opencast mine to recover good quality reserves of coal.

The mine was reopened in the presence of V.D.Ram, Member of Parliament and Gopal Singh, CMD, Central Coalfields Limited, on 25 February 2019.

Tetariakhar expansion open cast project (0.5 to 2.0 million tonnes per year normative and 2.5 mty peak) is located in the North Karanpura Coalfield in Latehar district.

[3] According to a Press Trust of India report, human rights group Amnesty International has claimed that "abusive laws and the poor enforcement of safeguards" at coal mines is leading tribal communities to oppose expansion of these blocks.

[4] The report says that in the three mines cited above, land was acquired without directly informing the affected families or consulting them about their rehabilitation and resettlement.