121 (b) provide the coastal State, at its request, with preliminary reports, as soon as practicable, and with the final results and conclusions after the completion of the research; (c) undertake to provide access for the coastal State, at its request, to all data and samples derived from the marine scientific research project and likewise to furnish it with data which may be copied and samples which may be divided without detriment to their scientific value; (d) if requested, provide the coastal State with an assessment of such data, samples and research results or provide assistance in their assessment or interpretation; (e) ensure, subject to paragraph 2, that the research results are made internationally available through appropriate national or international channels, as soon as practicable; (f) inform the coastal State immediately of any major change in the research programme; (g) unless otherwise agreed, remove the scientific research installations or equipment once the research is completed. 2. This article is without prejudice to the conditions established by the laws and regulations of the coastal State for the exercise of its discretion to grant or withhold consent pursuant to article 246, paragraph 5, including requiring prior agreement for making internationally available the research results of a project of direct significance for the exploration and exploitation of natural resources. Article 250 Communications concerning marine scientific research projects Communications concerning the marine scientific research projects shall be made through appropriate official channels, unless otherwise agreed. Article 251 General criteria and guidelines States shall seek to promote through competent international organizations the establishment of general criteria and guidelines to assist States in ascertaining the nature and implications of marine scientific research. Article 252 Implied consent States or competent international organizations may proceed with a marine scientific research project six months after the date upon which the information required pursuant to article 248 was provided to the coastal State unless within four months of the receipt of the communication containing such information the coastal State has informed the State or organization conducting the research that: (a) it has withheld its consent under the provisions of article 246; or (b) the information given by that State or competent international organization regarding the nature or objectives of the project does not conform to the manifestly evident facts; or