More than 666,000 tons of lead ore have been produced by 3 subsidiaries of the Iranian Mines and Mining Industries Development and Renovation Organization (IMIDRO), within the first 8 months of the year (March 21-November 21), IMIDRO reported. The IMIDRO subsidiaries reportedly produced almost 666,314 tons of lead and zinc minerals, indicating 6 percent growth compared with the same period last year.