National Mineral Development Corporation (NMDC)
NMDC Limited, previously known as National Mineral Development Corporation, is a state-controlled mineral producer. It is owned 72.43 percent by the government and is under the administrative control of the Ministry of Steel. It is involved in the exploration of iron ore, copper, rock phosphate, limestone, dolomite, gypsum, bentonite, magnesite, diamond, tin, tungsten, graphite etc. It is India's largest iron ore producer and exporter, producing more than 35 million tons of iron ore from 3 fully mechanised mines in Chhattisgarh and Karnataka. It also operates the only mechanised diamond mine in the country at Panna in Madhya Pradesh.