A high-resolution image from June 9 shows a heavy truck carrying 18 shielded containers at the tunnel entrance.
Experts believe the containers resemble Type B nuclear transport casks, potentially capable of holding Iran’s entire stockpile of 60% enriched uranium.
If true, this would mean:
Iran likely emptied Natanz and Fordow before the strikes.
The enriched uranium may now be stored in an undamaged underground facility.
The IAEA still does not know the exact location of the material.
Iran could theoretically further enrich 60% uranium to weapons-grade (90%) in about 10 days using advanced centrifuges.
Alternative explanations (decoy, medical isotopes, chemicals, construction materials) are considered but viewed as less likely.
Source: Bulletin of the Atomic Scientists