Natural justice and non-retrospectivity limit excise adjudication where defence records were withheld and penalty was applied early.

Retention of seized but unrelied documents, where those records were relevant to the defence in allegations of undervaluation, clandestine removal and shortage of inputs, was treated as causing prejudice because it denied effective access to material needed for reply. The adjudication was therefore considered vitiated for breach of natural justice, with remand required after return of the documents and proper opportunity of defence. On penalty, Section 11AC of the Central Excise Act could not be applied to a duty period that ended before its commencement, so liability had to be considered under the law then in force and not under that later penal provision.

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Issues: (i) Whether non-return of seized but unrelied documents and denial of access to relevant records caused prejudice and vitiated the adjudication for breach of natural justice; (ii) Whether penalty under Section 11AC of the Central Excise Act, 1944 could be imposed for periods prior to its enforcement.

Issue (i): Whether non-return of seized but unrelied documents and denial of access to relevant records caused prejudice and vitiated the adjudication for breach of natural justice.

Analysis: The seized documents belonged to the assessee and were not shown to be required for any continuing investigation or enquiry. The departmental circular contemplated segregation of relied and unrelied documents and return of the latter after issuance of notice. The dispute involved allegations of undervaluation, clandestine removal and shortage of inputs, for which the assessee's statutory records were relevant to prepare a defence. In these circumstances, retention of the documents deprived the assessee of effective opportunity to answer the charge and prejudice was established.

Conclusion: The adjudication was vitiated for breach of natural justice, and the matter required remand after return of the seized documents and grant of proper opportunity.

Issue (ii): Whether penalty under Section 11AC of the Central Excise Act, 1944 could be imposed for periods prior to its enforcement.

Analysis: The relevant duty period preceded the date from which Section 11AC came into force. A penal provision cannot be applied to past periods unless the statute clearly so provides. The liability, if any, had therefore to be examined under the provisions then in force, and not under Section 11AC.

Conclusion: Penalty under Section 11AC was not sustainable for the pre-enforcement period.

Final Conclusion: The appeals were allowed, the impugned orders were set aside, and the matters were remanded for fresh adjudication after return of the seized documents and opportunity of defence.

Ratio Decidendi: Where seized but unrelied documents relevant to the defence are retained without justification and prejudice is shown, the adjudication is vitiated; a penal provision cannot be applied retrospectively to a period before its commencement.

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