 There are fourteen coalfields in this group, namely Korar, Umaria, Johilla, Sohagpur, Sonhat, Jhilimili, Chirimiri, Sendurgarh, Koreagarh, Damhamunda, Panchbahini, Hasdeo-Arand, Lakhanpur and Bishrampur.The group covers an area of about with estimated reserves of 15,613.98 million tonnes.The deposits are at a depth of 0–1200 meters.