High Quality Content by WIKIPEDIA articles! Dalli-Rajhara is a city and a municipality in Durg district in the state of Chhattisgarh, India. Dalli Rajhara is home of iron ore captive mines for Bhilai Steel Plant, the largest integrated steel plant in India. Dalli mines deposit was discovered by Pramatha Nath Bose, the first Indian graded officer of the Geological Survey of India around 1900. Dalli is also famous for the labour reform leader late Shankar Guha Niyogi.