(1) THESE are appeals that arise out of an order of the Customs, Excise and Gold (Control) Appellate tribunal.

(2) NO detailed discussion of facts is necessary for reasons which will become apparent. The appellants manufacture iron and steel. For that purpose they require oxygen gas. They make the oxygen gas themselves. Of the oxygen gas made by the appellants, 99.998% is captively consumed as aforesaid. In this respect the appellants declared the value of 100 cubic metres of the oxygen gas at Rs. 23.21, being the cost of production. The balance .002 per cent was used by the appellants contractors working in their plant, to whom the appellants charged the rate of Rs. 325.00 per hundred cubic metres. The Excise authorities issued to the appellants a notice proposing to assess the value of the 99.998 per cent of the oxygen gas captively used also at the rate of Rs. 325.00 per hundred cubic metres, and did so. The tribunal upheld the stand of the Excise authorities, and it is against that order of the tribunal that these appeals are filed.

(3) AT the stage when notice on these appeals was issued, particular reference was made to the ground that related to an ex