JUDGMENT

KAPUR, J. –

This is a petition under Article 32 of the Constitution challenging the legality of the amendment introduced in section 150 the Assam Sales Tax Act, 1947 (Act XVII of 1947) by section 2 of the Assam Sales Tax (Amendment) Act, 1960 (Act XIII of 1960) by which sub-section (b) of item (i) of sub-clause (b) of clause (1) was deleted and thereby sales of goods to a registered dealer intended for use in production of goods for sale became liable to sales tax.

The appellant company is a limited company carrying on in the State of Assam its business of manufacturing, selling and supplying iron and steel materials. It held a registration certificate under the Assam Sales Tax Act, as it was before the amendment of 1960. Under that Act all its purchases for use in manufacture or production of goods taxable under the Act were exempt from sales tax but after the amendment of the Act there was a deletion in the registration certificate of certain goods, e.g., cast iron, iron plates, steel bars and galvanized wire, which were used by the petitioner in the manufacture of its finished products which are also taxable in the State. Consequently it has become liable to pay tax on t