Before the United States bombed Natanz, Fordo and Isfahan enrichment sites late Saturday, Dr. Theodore Postol had given Lt. Col. Danny Davis an analysis of what the huge “bunker buster” bombs might or might not achieve. President Donald Trump proclaimed all the bombings “successful,” perhaps reflecting primarily that everything the President does is a complete success to him. According to Postol, however, “There are a number of factors that can make the penetration of these munitions very problematic.”
Structures and obstacles built into the large bunker areas, shaped at angles to the perpendicular which are intended to deflect the penetrating munition before it reaches the deep bunkers which are the target to destroy, can prevent the munition from hitting the target perpendicularly and reduce its penetration and its destructive capacity. Concrete with hardened materials built into it can also make penetration difficult. In addition, the further into the mountain the bunker is, horizontally, the more difficult it is for the munition to hit the bunker perpendicularly.
Colonel Davis’ interview with Dr. Postol is here.