India's state-owned miner National Mineral Development Corporation (NMDC) has announced that in the first quarter ended June 30 of the financial year 2016-17 it produced 7.63 million mt of iron ore, registering an increase of 28.6 percent compared to the same period of the financial year 2015-16. The company's iron ore sales in the June quarter this year amounted to 7.77 million mt, up 16.8 percent year on year.