J.C.SHAH, J.

(1) THE Indian Copper Corporation Ltd., is a Company incorporated under the laws of the United Kingdom and has its registered office for the purpose of its business in India at Ghatsila, District Singhbhum in the State of Bihar. The Corporation mines copper and iron ore from its own mines, transports the ore to its factory and manufactures finished products from the ore for sale. The Corporation has for the purpose of its business to purchase diverse categories of goods from outside the State of Bihar. Some of those goods are used in its factory in the process of manufacture and in the copper and kyanite mines, other goods are purchased for use in its offices, factory and mines and in the hospitals set up for affording medical facilities to its employees.

(2) ON 30/04/1957 the Corporation applied to the Superintendent of Sales Tax, Jamshedpur, for registration as a dealer under the central Sales Tax Act (74 of 1956) setting out a list of goods for specification in the certificate of registration under S. 8 of the Act. The Superintendent of Sales Tax issued the certificate of registration to the Corporation without specifying certain categories of goods wh