NMDC - National Mineral Development Corporation Limited is owned by Government of India under the Administration of Ministry of Steel. It was founded in 1958. It is India's largest Iron Ore producer and exporter. It also operates the only diamond mine of India at Panna Madhya Pradesh. It deals with the exploration of Iron Ore, Graffiti, Gypsum, Copper, Rock Phosphate, Bentonite, Magnesite, Diamond, Tin, Dolomite, Limestone, etc. It has its headquarters in Hyderabad.