Exemption for vegetable oil refinery residues upheld where prior rulings treated process waste as eligible and demand failed.

Residues arising from refining vegetable oil, including gad, sludge, acid oil and spent earth, were treated as eligible for the relevant exemption because earlier decisions had already held that spent earth remained earth after processing and that similar process residues such as impurities, soap stock and wax qualified as exempt waste. The controversy was therefore regarded as settled and not open to re-examination, with the stated result that the exemption applied and the demand, interest and penalty could not survive.

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Issues: Whether gad, sludge, acid oil and spent earth arising in the course of refining of vegetable oil were entitled to the benefit of the relevant exemption notification, and whether the consequent demand, interest and penalty could be sustained.

Analysis: The Tribunal noted that the issue had already been covered by earlier decisions, including the ruling that spent earth remained earth after processing and was not liable to duty, and by decisions treating similar process residues such as impurities, soap stock and wax as waste eligible for exemption. In light of these authorities, the controversy was treated as no longer open for re-examination.

Conclusion: The benefit of the exemption was held admissible and the demand, interest and penalty could not survive.

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