 As those mines started to dry up, new virgin plots were excavated, some of which extended beyond the Damodar River into Purulia district and beyond River Barakar into the Nirsa of Dhanbad district in Jharkhand.One of the deepest mines in Asia, Chinakuri 1 and 2, is located in this region.It is situated below the surface and inclines under the Damodar River extending for some into Purulia district.