COLLECTOR OF CENT.EXCISE,PATNA vs M/S.TATA IRON & STEEL CO. LTD.

The Supreme Court addressed the levy of excise duty on zinc dross and flux skimming generated during the galvanisation of steel sheets, determining that these by-products are non-excisable under the Central Excise Rules, 1944. The Court held that the assessees did not manufacture these products and were under the bona fide impression that they were non-excisable, thus rejecting the Department's claims of duty evasion and penalties under Rule 9(2) and Rule 174. The judgment reaffirmed the precedent set in Union of India vs. Indian Aluminium Co. Ltd., establishing that such by-products do not attract excise duty.