(9) The LTA shall retain at least one copy of each application and copies of all correspondence and decisions regarding the application, and shall make them available to the public upon reasonable request. 17. Exemption Orders (1) The LTA may issue an order (an “exemption order”) exempting specified activities or classes of persons from the requirement to hold a licence. (2) An exemption order may be made subject to such conditions as the LTA deems necessary and that are consistent with this Act and any applicable regulations and rules. 18. Types of Licences (1) The LTA may issue two types of licences: (a) individual licences; and (b) class licences. (2) The LTA shall specify which types of telecommunications services require individual licences, and which types of telecommunications services require class licences. The specification of licence types shall be included in a regulation, rule, order or notice issued by the LTA pursuant to Section 16 (2). 19. Licensing Procedures and Conditions (1) The procedures for issuing licences, including applicable licence terms and conditions, shall be transparent, fair and objective. (2) Once established, licence procedures and conditions shall be published by the LTA in accordance with Section 11 (5). (3) It is a long-term objective to regulate licensees using rules of general application rather than conditions of individual licences. The LTA may seek to amend licences from time to time to achieve this objective. 20. Changes to Licences (1) The LTA may amend, modify, suspend or revoke a licence (a licence “change”) if: (a) the change has been requested or agreed to by the licensee; (b) the licensee has been in breach of a material licence condition, this Act, a regulation, rule or order; (c) changes to international treaties, commitments, recommendations, standards or the laws of Liberia require the change; or