Exemption claim for excise duty fails where earlier order left the issue open and retrospective rules made captive consumption dutiable.

An earlier appellate order did not finally determine whether the goods qualified as exempt tapes, because it had left that question open and addressed only captive consumption at that stage. The Revenue was therefore not precluded from disputing in later refund proceedings that the goods were sheets rather than tapes and from challenging the exemption claim. The show cause notice also properly required a response on exemption, and the retrospective amendment to Rules 9 and 49 made duty payable on captively consumed goods. On those facts and in law, the exemption was unavailable and the assessee's claim failed.

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Issues: Whether the appellants were entitled to exemption from excise duty on the goods manufactured by them, and whether the Department was precluded from disputing the nature of the goods and denying the exemption after the earlier order of the Appellate Collector.

Analysis: The earlier appellate order had expressly left open the question whether the goods were tapes eligible for exemption, and had decided only that goods used within the factory for captive consumption were not then dutiable. Since the exemption issue was not finally determined in those proceedings, the Department was not barred from contending in the later refund proceedings that the goods were sheets and not tapes. The show cause notice also required an answer to the exemption claim, and the retrospective amendment of Rules 9 and 49 made duty payable on captively consumed goods. The Court found no infirmity in the Tribunal's view that the exemption was unavailable on the facts and in law.

Conclusion: The exemption claim was rejected, the Department's stand was upheld, and the appeal failed.

Ratio Decidendi: Where an earlier order leaves an exemption issue open, it does not attain finality on that point, and the Revenue may contest entitlement to exemption in later proceedings; a claim of captive consumption does not survive a retrospective levy-making amendment where duty is otherwise lawfully exigible.

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