This Article amends paragraph 4 of Schedule 7 to the Rates (Northern Ireland) Order 1977 (the principal Order) and provides that industrial derating will be phased out from 1 April 2005. It specifies the percentage of the rate payable on industrial property during each year of the phase out period and removes the exemption completely on 1 April 2011. The Department is granted an order-making power to vary the percentages payable during the phase out period. Such an order would be subject to the affirmative resolution procedure at the Assembly. Article 3 also provides that during the phase out period, where a property is occupied and used partly for industrial purposes and partly for other purposes, the part that is not used for industrial purposes will continue to be liable to the full rate while the industrial part will be liable to the percentage rate applicable in the year in question.