It was said on behal)'. of the petitioner that the iµipugned Notice violated Article 14 of the Constitution on the ground that there was discrimination between exporters of mica powder on the one band and exporters of mica scrap on the other. It was emphasised that the export of mica powder is not within the ambit of the canalisation scheme. The impugned Notice canalises export of all grades and varieties of mica eiwepGing jnanufaCured and fabricated mica (including die cut condenser films, spacers, bridges, washeres etc.) micanite, raconstituted mica, mica powder and mica paper. The mica· export policy published at pages 77-78 of the Export Trade Control Hand Book of Policy and Procedure 1970 published by the Government of India, Ministry of Foreign Trade deals with__shipment of any variety other than fabricated mica, inter alia, on the basis of an appli· cation in that behalf and compliance with other terms laid down in that policy and in particular opening irrevocable letter of credit by a foreign buyer in a Bank in India for 100% , of the invoice value of the goods. Shipment of fabricated mica under that policy continued to remain free from the above stipulation regarding opening of 100% irrevocable letter of credit. Fabricated mica in that policy is said to include micanite, built up mica, mica tapes, mica cloth, mica silk, mica paper, mica folium and all varieties of mica cut or purched to specific shapes and sizes, and mica powder. It is said on behalf of the petitioner that as a result of the exclusion of mica powder from the scope of the canalisation scheme, there are possibilities of mica waste and mica scrap being converted into mica .powder and exported by individual exporters and there may be a ldss in foreign exbange. The affidavit evidence on behalf of the State is that the exclusion of mica powder from the cana]isation scheme is to develop mica powder industry in our country, because this industry is developing and is practically nascent in gr0wth. Therefore, there is intelligible differentia between mica powder Ol\ the one hand and mica scrap and waste on the other, in excluding mica powder from the canalisation. scheme.