Who principally owns the parent company of Hindustan Zinc Limited  ?
Hindustan Zinc Hindustan Zinc Limited (HZL) is an integrated mining and resources producer of zinc, lead, silver and cadmium. It is a subsidiary of Vedanta Resources PLC. HZL is the world's second largest zinc producer. Its FY2015 revenues were Rs. 147.9 billion.
Renova Group Renova Group is a Russian conglomerate with interests in aluminium, oil, energy, telecoms and a variety of other sectors. The main owner and president is Viktor Vekselberg who founded the company in 1990.