matter unsuitabl-e for dumping at sea, uith reconmenalations for the lssue of specialA/40/923 Eng 1i sh Page I7 Permits for the dunping of lou-level radioactive nastes, rras translnitted to the Ninth Consultat.ive Meeting and eill be considered at lhe Tenth Consultative M€etingin october 1986. 51. The revised deflnition of radioactive naterial unsuitable for dumping at sea has been fornulated, ln parE, in qualitative terns and, in part, in numerical terrns, based on the princj.ples of radiation protection and sclentific modelling. They provide guidance on the nature and guantities of radioactive saste lhat nay be dunPed at any given dunping site, under the provisions of the London Dumping ConvenEion, together wlth guidance on durnping procedures. 62. Implications of the Convention on the Lat, of tbe Sea for dunplng instruments. The Contracting Parties to the london Dumping Convention tlecided that at the Tenth Consultative Meeting they eill exanine the relationship betueen ihe requirernents of that Convention and the Convention on the Lar., of the Sea. This work had been started in 1975 and again in 1981, but lras set aside to be taken up following the adoption of the Conv€ntion on the La!, of the Sea. It rrill be recalled that lhe l-972 London Dunping Convention did not specify, in view of the convening of the Third united Nations Conference on the Lar' of the sea, the linits of the area in rhich a State has the right to apply the provision against foreign vessels. Article XIII of that Conventlon reads as follor.rs: "Noehing in tshis Conventionshall prejuillce the codification and development of the law of the sea by tbe United Nations @nference on the Law of the sea convened pursuant to resolution 2750 C (XXV) of Che General Assembly of the United Nations nor the presenE or
**Analysis**
This text appears to be discussing international agreements and regulations related to the dumping of radioactive waste at sea. It mentions the London Dumping Convention, the Convention on the Law of the Sea, and the 9th and 10th Consultative Meetings. The text also references scientific modeling and radiation protection principles. Given the technical and regulatory nature of the content, it is likely that the text falls under the category of Natural resources and environment or Science and technology.

**Category**
Natural resources and environment, Science and technology