Manufacture test for excise: incidental waste is non-excisable, while processed siporex aggregate and broken material are dutiable.

Siporex waste arising incidentally in the course of manufacture was not excisable because it did not result from any process directed at producing a new article with a distinct name, character or use. By contrast, siporex aggregate and siporex broken were treated as manufactured goods liable to central excise duty because crushing and manual breaking involved manipulation that produced new products with distinct size and identity. The governing test applied was whether processing brought into existence a new and different article with a separate commercial character; where that transformation was absent, the material remained non-excisable waste.

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Issues: (i) Whether siporex waste arising in the course of manufacture was excisable. (ii) Whether siporex aggregate and siporex broken were manufactured goods liable to central excise duty.

Issue (i): Whether siporex waste arising in the course of manufacture was excisable.

Analysis: The waste came into existence without any voluntary or involuntary act directed towards producing it. It was not shown to be the result of a manufacturing process bringing into existence a new article with a distinct name, character or use. The character of the material as waste was therefore material.

Conclusion: Siporex waste was not excisable and the appeal succeeded in part on this issue.

Issue (ii): Whether siporex aggregate and siporex broken were manufactured goods liable to central excise duty.

Analysis: Siporex aggregate was produced by crushing with the aid of power, and siporex broken was manually broken into appropriate sizes. In both cases there was manipulation and a new product emerged with a distinct size and identity. The relevant test was whether a new and different article having a distinctive name, character or use came into existence, and on the facts that test was satisfied.

Conclusion: Siporex aggregate and siporex broken were liable to duty and the appeal failed on these issues.

Final Conclusion: The dispute was resolved by treating siporex waste as non-excisable while upholding duty liability for siporex aggregate and siporex broken.

Ratio Decidendi: A product is manufactured when processing, crushing, or manipulation brings into existence a new and different article with a distinct name, character, or use; mere waste arising without such transformation is not excisable.

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