Narankhuu Kh., general director, Erdenetsogt P., deputy general director for development, Ph. D (geology), Zhigachev A. L., chief of department for development, Ph. D (techn.), Enkhtuuyaa P., leading economist of department for development, Kitsenko V. F., top specialist of department for development, Ph. D (techn.), "Erdenet" joint venture. D. Erdenetsogt, leading specialist; S. Narantsetseg, engineer; T. Sanzhmyatav, engineer, New business department, "Erdenet" joint venture took part in the work.