Special Additional Duty exemptions expanded to include crude sulphur, rock phosphate and referenced goods with nil duty status. Amendment inserts additional tariff entries into Notification No. 23/2002-Customs that grant nil effective rates of Special Additional Duty for specified imported goods, including crude or unrefined sulphur, rock phosphate and groups of goods cross-referenced to the Table annexed to Notification No. 21/2002-Customs, by adding new serial entries identifying tariff headings or chapter references and recording a nil duty rate.