Hindustan Zinc Limited is an Indian company engaged in mineral exploration, mining, processing and production of metals and alloys. The company produces zinc, lead, silver, commercial electricity and alloys. Its segments include zinc, lead, silver and others and wind energy. Its operations include five zinc-lead mines, four zinc smelters, one lead smelter, one zinc-lead smelter, eight sulfuric acid plants, one silver refinery, six thermal power plants and four solar power plants in the state of Rajasthan. In addition, the company has a rock phosphate mine at Matoon near Udaipur in Rajasthan and zinc, lead, silver processing and refining facilities in Uttarakhand. The company also has wind farms in Rajasthan, Gujarat, Karnataka, Tamil Nadu and Maharashtra and solar farms in Rajasthan.