America's bunker-buster bomb: was it effective against Natanz and Fordow?

IranNews and media1404 (2025/26)

According to official statements by officials and media of the United States of America, in the early hours of 1 Tir (June–July) 1404 (2025/26), American bombers dropped 14 "GBU-57 MOP" bombs on the Fordow and Natanz nuclear sites. But the question is whether these bombs have destroyed or damaged Iran's nuclear facilities.
An examination of the penetration capability of the "GBU-57 MOP" bomb shows that the maximum penetration of this bomb is 60 meters. The Fordow nuclear sites and Natanz's upgraded facilities, however, are located at a depth of 80 to 100 meters below ground level.
Meanwhile, Rafael Grossi, director general of the International Atomic Energy Agency, recently said in an interview with the UK's Financial Times newspaper, referring to the impossibility of eliminating Iran's nuclear capabilities, that the depth of Iran's nuclear centers is about half a mile (800 meters).
The data therefore show that although America's bunker-buster bombs have been dropped on the Fordow and Natanz nuclear sites and have probably caused some damage, the destruction of or serious damage to Fordow and Natanz is far from realistic.

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Machine-translated from Persian by Namafar; the Persian original is authoritative. Read the original in Persian

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