India's state-owned miner National Mineral Development Corporation (NMDC) has announced that in the first six months of the financial year 2016-17 (started April 1) it produced 13.93 million mt of iron ore, registering an increase of 12.6 percent year on year. The company's iron ore sales in the given period amounted to 15.83 million mt, rising by 20.7 percent year on year.