This Regulation shall enter into force in its entirety on 1 June 1960 for contracts relating to the supply of special fissile materials.
As regards contracts for the supply of ores and source materials, implementation of Articles 5 and 6 shall be deferred for six months from that date and shall take effect on 1 December 1960. During that period contracts falling within the provisions of this paragraph shall continue to be subject to the prior approval of the Commission, in accordance with Article 222 of the Treaty.