Question: Who principally owns the parent company of Hindustan Zinc Limited  ?

Context paragraphs:
Ironbark Zinc: Ironbark Zinc Limited is an Australian Securities Exchange listed (ASX: IBG) mineral resources company focused on the development of the world class Citronen Zinc Project in Greenland.

MIM Holdings: MIM Holdings Limited was an Australian mining company created in 1970 as the parent company of Mount Isa Mines Limited, which operates the Mount Isa mines in north-west Queensland.  Based in Brisbane, the capital city of the Australian state of Queensland, MIM Holdings owned and/or operated coal, gold, and base metal mines in Australia and Argentina.  It also operated lead and copper smelters in Mount Isa, a copper refinery in Townsville (Queensland), a lead refinery at Northfleet (England), zinc smelters using the Imperial Smelting Process at the National Smelting Company located within Avonmouth Docks (England) and Duisburg (Germany), and a precious metals refinery in Sydney.

Consolidated Zinc: Consolidated Zinc was an Australian mining company from 1905 to 1962.  The company's initial operations focused on extracting zinc from mine tailings of the Broken Hill Ore Deposit at Broken Hill, New South Wales, Australia.  The company was founded in Melbourne on 9 September 1905 as the Zinc Corporation Limited, to exploit residual zinc concentrations with an estimated value of $12 million in the 6 million tons of mine tailings deposited from mining activities over the previous 20 years.  Key figures involved in the effort included William Baillieu and William Sydney Robinson.  Also involved was future U.S. president Herbert Hoover, who inspected the tailing dumps as a mining engineer in the group's investigations prior to formation of the company.

Hindustan Zinc Limited Ground: Hindustan Zinc Limited Ground is a cricket ground in Visakhapatnam, Andhra Pradesh.  It is owned by Hindustan Zinc Limited and was established in 2002.

Rampura Agucha: Rampura Agucha is a zinc and lead mine in the Bhilwara district of Rajasthan, India.  It has world's largest deposits of zinc and lead.  The mine is owned by Hindustan Zinc Limited (HZL).

Ghanshyam Binani: Ghanshyam Das Binani (1932–1998) was an Indian industrialist, playing an active role in his father's ancestral business of trading in non-ferrous metals.  He had been the President of Indian Non-Ferrous Metal Manufacturers Association and had also been on the committees of Indian Merchants Chambers and Federation of Indian Chamber of Commerce and Industry.  He, along with his father, set up joint ventures with Revere Copper and Brass for Copper and Copper Alloy Extrusions and with Consolidated Mining & Smelting Company Ltd., Canada for manufacture of Electrolytic Zinc.  With this came the birth of Cominco Binani Zinc Ltd., on 2 August 1962, promoted by Binani Metals Limited in Binanipuram on the banks of Periyar River in Kerala.  Cominco Binani Zinc Ltd. became the first producer of primary zinc metal in the country and the first slab was cast on 21 April 1967.  In line with their overall world wide policy, Cominco Ltd. also withdrew as financial collaborators of the company on 3 May 1991, and the company was rechristened Binani Zinc Ltd.

Hindustan (newspaper): Hindustan Dainik or "Hindustan" is an Indian Hindi-language daily newspaper and the fifth-largest circulated newspaper in India.  It is published by Hindustan Media Ventures Limited.  Earlier it was part of HT Media Ltd group, which spun off its Hindi business into a separate company named Hindustan Media Ventures Limited in December 2009.  It ranks as the second largest-read daily in the country.  "Hindustan" has 19 editions across the Hindi belt.  They are spread across Delhi, Haryana (Faridabad), Bihar (Patna, Muzaffarpur, Gaya and Bhagalpur), Jharkhand (Ranchi, Jamshedpur and Dhanbad), Uttar Pradesh (Lucknow, Varanasi, Meerut, Agra, Allahabad, Gorakhpur, Bareilly, Moradabad, Aligarh, and Kanpur) and Uttarakhand (Dehradun, Haridwar, Haldwani).  Apart from these, the paper is also available in key towns like Mathura, Saharanpur, Faizabad.

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.

Rajpura Dariba Mine VRM disaster: The Rajpura Dariba Mine VRM disaster took place in Dariba, Udaipur on 28 August 1994 at a mine operated by Hindustan Zinc Ltd.

Vedanta Resources: Vedanta Resources plc is a global diversified metals and mining company with its headquarters in London, United Kingdom.  It is the largest mining and non-ferrous metals company in India and has mining operations in Australia and Zambia and oil and gas operations in three countries.  Its main products are copper, zinc, aluminium, lead, iron ore and petroleum.  It is also developing commercial power stations in India in Odisha (2,400 MW) and Punjab (1,980 MW).  The company is principally owned by Indian billionaire Anil Agarwal through Volcan Investments, a holding vehicle with a 61.7% stake in the business.

Supporting paragraphs: Hindustan Zinc Vedanta Resources
Answer: Anil Agarwal