Modvat credit admissibility affirmed for inputs used to make sand moulds when those moulds serve manufacture of dutiable castings. A Tribunal larger bench held sand moulds are not marketable/excisable and that chemicals and resins used to make them are used in relation to manufacture of dutiable castings; in light of this, and divergent practice among Commissionerates, the Board has withdrawn Circular No. 29/88 and directed that pending disputes on eligibility of Modvat credit be considered in accordance with the Tribunal decision.