D. Findings, Assessments and Next Steps
47. In connection with the nuclear material imported by Iran in 1991, Iran has submitted ICRs, PILs and MBRs, as well as relevant DIQs. The Agency has verified nuclear material presented to it and is currently auditing relevant source data. The issue of depleted uranium in the UF4 remains to be resolved, and the environmental samples taken in connection with the UF6 cylinders need to be analysed. To confirm that the pellet irradiation experiments have been solely for radioisotope production, the Agency has taken samples from the hot cells and lead shielded cells at the laboratories of the Tehran Nuclear Research Centre. The analytical results are not yet available.
48. In its letter of 19 August 2003, Iran acknowledged that it had carried out uranium conversion experiments in the early 1990s, experiments that Iran should have reported in accordance with its obligations under the Safeguards Agreement. Iran has stated, however, that it is taking corrective action in that regard. The Agency will continue its evaluation of the uranium conversion programme.
49. As regards enrichment, and as mentioned earlier, during the meeting of 9-12 August 2003, the Agency team received new information about the chronology and details of Iran's centrifuge enrichment programme. Agency evaluation of the new information will require, inter alia, an assessment of the various phases of the programme and analysis of environmental samples taken at the Kalaye Electric Company workshop.
50. Additional work is also required to enable the Agency to arrive at conclusions about Iran's statements that there have been no uranium enrichment activities in Iran involving nuclear material. The Agency intends to continue its assessment of the Iranian statement that the high enriched uranium particles identified in samples taken at Natanz could be attributable to contamination from imported components. As agreed to by Iran, this process will involve discussions in Iran with Iranian officials and staff involved in the R&D efforts and visits by Agency inspectors and …