(3) A controller or an authorised officer shall notify the addressee or consignee of any article detained under ​section 15​ or the person from whom any publication has been seized and detained under ​section 16​ of his right to appeal under ​subsection (1)​. [  9​ /98]​ (4) A notification given by a controller or an authorised officer under ​subsection (3)​ may be given personally or may be served by post and the day on which a notification which has been posted would be received in the ordinary course of post shall be deemed to be the date  of service of the notification. (5) Notwithstanding any other provisions of this Act, no article or publication shall be destroyed under ​section 15​ or ​16​ unless its detention has not been appealed against or an appeal against its detention has been dismissed or abandoned. [15 [  9​ /98]​ Exemptions  21. —​(1) Where any publication is a prohibited publication, an obscene or objectionable publication under this Act, any person may apply to the Minister for an exemption from any of the provisions of this Act in respect of that publication. [  9​ /98]​ (2) Every application shall be in the form provided for the purpose by the Chief Controller and shall be accompanied by such fee as the Minister may prescribe by regulations. [  9​ /98]​ (3) On receiving an application under this section in relation to a publication, the Minister, if satisfied that the publication should be made available to a limited class of persons or to a particular person for educational, professional, scientific, artistic or technical reasons, may exempt that class of persons or that person from any such provision of this Act as he may specify in respect of that publication for such period as he thinks fit. [  9​ /98]​ (4) An exemption under this section may be granted absolutely or subject to such conditions as may be specified by the Minister. [16 [9​ /98