Exemption notification must be construed on its own terms; zinc dust classification required fresh examination, while late refund claims were time-barred.

A tariff classification entry does not control the interpretation of an exemption notification where the notification uses different wording and draws its own distinction between zinc powders and other goods. The identity of zinc dust for notification purposes required reconsideration on the basis of trade understanding and technical literature, so the surviving refund claims were remanded for de novo examination. The refund claims at Sl. Nos. 8 to 23 were filed beyond the statutory limitation period and were rejected as time-barred.

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Issues: (i) Whether zinc dust imported by the assessee was entitled to concessional duty under Notification No. 44/83 dated 1-3-1983 as zinc powder or as goods covered by the residuary entry. (ii) Whether the refund claims at Sl. Nos. 8 to 23 were barred by limitation.

Issue (i): Whether zinc dust imported by the assessee was entitled to concessional duty under Notification No. 44/83 dated 1-3-1983 as zinc powder or as goods covered by the residuary entry.

Analysis: The classification under Heading 79.03 did not conclude the notification issue, because the notification itself drew a distinction between zinc powders and flakes on the one hand and other goods on the other. The expression used in the tariff for classification purposes could not be extended automatically to the notification. The text also noted that trade understanding and technical material indicated a distinction between zinc dust and zinc powder, and that the departmental reliance on the tariff note was not decisive for the notification.

Conclusion: The question required fresh examination on the basis of trade understanding and technical literature, and the assessee was entitled to reconsideration of the claim.

Issue (ii): Whether the refund claims at Sl. Nos. 8 to 23 were barred by limitation.

Analysis: The assessee conceded that these claims had been filed beyond the statutory period of limitation and did not press them.

Conclusion: The claims at Sl. Nos. 8 to 23 were rejected as time-barred.

Final Conclusion: The matters relating to the surviving refund claims were remanded for de novo consideration, while the time-barred claims stood rejected.

Ratio Decidendi: An entry used for tariff classification does not control the interpretation of a notification where the notification uses different wording and draws its own distinction; the notification must be construed on its own terms, with trade and technical understanding relevant where the commodity identity is in dispute.

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