https://x.com/intelfrombrian/status/1933520714490896835?s=46(http://www.autoadmit.com/thread.php?thread_id=5737230&forum_id=2#49011643)
https://en.m.wikipedia.org/wiki/Natanz_Nuclear_Facility
The underground enrichment facility of this center is protected by a concrete shield with a thickness of approximately 7.6 meters.[2](http://www.autoadmit.com/thread.php?thread_id=5737230&forum_id=2#49011762)