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Hindustan Zinc Limited (HZL) is an Indian integrated mining and resources producer of zinc, lead, silver and cadmium.It is a subsidiary of Vedanta Limited. [4] Earlier it was a Central Public Sector Undertaking, sold by Government of India to Vedanta Limited when Atal Bihari Vajpayee and Bharatiya Janta Party Government was in power in the year 2003.
HZL is the country's largest integrated producer of zinc and as of 2023, the company an 80% market share in primary zinc production in India. [90] [91] As of 2023, HZL is also the second largest integrated zinc producer in the world. [92] Rampura Agucha, owned by HZL, is the world's largest underground zinc mine as of 2022. [93]
The Hindustan Aluminium Corporation Limited was established in 1958 by the Aditya Birla Group. In 1962 the company began production in Renukoot in Uttar Pradesh making 20 thousand metric tons per year of aluminium and 40 thousand metric tons per year of alumina. In 1989 the company was restructured and renamed Hindalco. [8]
In the time of the Delhi Sultanate and the Mughal empire, the ruling elite and its Persian historiographers made a further distinction between "Hindustan" and "Hind". Hindustan referred to the territories of Northern India in the Miyan-Doab and adjacent regions under Muslim political control, while "Hind" referred to the rest of India.
Zinc is an inexpensive and effective part of treatment of diarrhea among children in the developing world. Zinc becomes depleted in the body during diarrhea and replenishing zinc with a 10- to 14-day course of treatment can reduce the duration and severity of diarrheal episodes and may also prevent future episodes for as long as three months. [176]
Zinc has been found being used in impure forms in ancient times as well as in alloys such as brass that have been found to be over 2000 years old. [36] [37] Zinc was distinctly recognized as a metal under the designation of Fasada in the medical Lexicon ascribed to the Hindu king Madanapala (of Taka dynasty) and written about the year 1374. [38]
The ZINC database (recursive acronym: ZINC is not commercial) is a curated collection of commercially available chemical compounds prepared especially for virtual screening. ZINC is used by investigators (generally people with training as biologists or chemists ) in pharmaceutical companies , biotechnology companies , and research universities .
Hindustan Copper Ltd. is a central public sector undertaking under the ownership of the Ministry of Mines, Government of India. HCL is the only vertically integrated government-owned-copper producer in India engaged in a wide spectrum of activities ranging from mining , beneficiation , smelting , refining and continuous cast rod manufacturer.