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Vedanta owns 70.5% of the share capital of Vedanta Aluminium and Sterlite owns the remaining 29.5% share capital of Vedanta Aluminium. Vedanta Aluminium produces ingots, billets & wire rods that are sold in the markets around the world. Vedanta Aluminium Limited (VAL) has acquired a 24.5% stake in L & T subsidiary Raykal Aluminium.
Vedanta Resources Limited is a diversified mining company headquartered in London, United Kingdom.It is the largest mining and non-ferrous metals company in India and has mining operations in Australia and Zambia [4] and oil and gas operations in three countries.
The Bridgman method is a popular way of producing certain semiconductor crystals such as gallium arsenide, for which the Czochralski method is more difficult. The process can reliably produce single-crystal ingots, but does not necessarily result in uniform properties through the crystal. [1] Diagram of the Bridgman-Stockbarger method
In the Czochralski process a seed crystal is required to create a larger crystal, or ingot. This seed crystal is dipped into the pure molten silicon and slowly extracted. The molten silicon grows on the seed crystal in a crystalline fashion. As the seed is extracted the silicon solidifies and eventually a large, cylindrical boule is produced. [3]
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.
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Silicon crystal being grown by the Czochralski method at Raytheon, 1956. The induction heating coil is visible, and the end of the crystal is just emerging from the melt. The technician is measuring the temperature with an optical pyrometer. The crystals produced by this early apparatus, used in an early Si plant, were only one inch in diameter.
The merger of Sesa Goa and Sterlite Industries was announced in 2012, as part of the Vedanta Group's consolidation. [25] Vedanta Resources, headquartered in London, is a globally diversified natural resources conglomerate, with interests in zinc, lead, silver, copper, iron ore, aluminium, power generation, and oil and gas. [26]