Customs exemption and post-clearance duty demand: low ash metallurgical coke denied benefit, with one demand held time-barred.

A customs exemption for coking coal was held inapplicable to low ash metallurgical coke, because the notification was confined to coking coal and could not be extended on the basis of ash content alone. A show-cause notice under Section 28 of the Customs Act was held maintainable after clearance under Section 47, and prior modification of the assessment order was not required. On limitation, where provisional assessments were finalised without duty adjustment, the residual limitation rule under Section 28(3) applied; one demand was time-barred, while the other was within time. The challenge succeeded only to that extent.

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Issues: (i) whether the benefit of Customs Notification No. 166/80 was available to the imported goods described as low ash metallurgical coke; (ii) whether, after clearance of the goods under Section 47 of the Customs Act, show-cause notices could be issued under Section 28 without modification of the assessment order; and (iii) whether the duty demand was barred by limitation.

Issue (i): whether the benefit of Customs Notification No. 166/80 was available to the imported goods described as low ash metallurgical coke.

Analysis: The notification exempted coking coal, later described as coking coal of ash content below 12%. The test reports showed the imported goods to be coke with ash content of 11%, and the goods were commercially and scientifically distinct from coking coal. The exemption was confined to coking coal and could not be extended to metallurgical coke merely because it had low ash content.

Conclusion: The benefit of the notification was not available to the imported goods and this issue was decided against the assessee.

Issue (ii): whether, after clearance of the goods under Section 47 of the Customs Act, show-cause notices could be issued under Section 28 without modification of the assessment order.

Analysis: A demand under Section 28 can be issued after clearance under Section 47 for duty not levied or short-levied. The time limit under Section 28 runs from the relevant date, and prior review or modification of the clearance order is not a condition precedent. The earlier view supporting the assessee was not followed, and the binding view permitting Section 28 action after clearance was applied.

Conclusion: The issue was answered in favour of the Revenue.

Issue (iii): whether the duty demand was barred by limitation.

Analysis: The provisional assessments had been finalized in favour of the assessee. In such a situation, clause (b) of Section 28(3) did not apply because there was no adjustment of duty on finalisation. Clause (a) also did not apply to the case as the goods had been cleared under the provisional assessment procedure, and the residual clause (d) governed the limitation period. On that basis, one notice issued beyond six months from payment of duty was time-barred, while the other notice issued within time was not barred.

Conclusion: The demand relating to one consignment was time-barred, while the demand relating to the other consignment was within limitation.

Final Conclusion: The appeal succeeded only to the extent of setting aside the time-barred demand and failed on the remaining issues, resulting in a partial allowance of the assessee's challenge.

Ratio Decidendi: A customs exemption for coking coal cannot be extended to metallurgical coke, and a show-cause notice under Section 28 may validly be issued after clearance under Section 47; where duty was not levied and no adjustment arose on finalisation of a provisional assessment, limitation is governed by the applicable residual provision under Section 28(3).

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