Why This Is the Only Bomb That Could Destroy Iran's Nuclear BunkerUnder 300 Feet of Rock
Briefly

The GBU-57/B is a powerful nonnuclear bomb capable of penetrating deep underground targets, such as Iran's Fordo nuclear facility. This facility is buried under significant layers of rock and concrete, making it nearly impervious to earlier-generation bunker busters. The U.S. is the sole nation with access to the GBU-57/B, and its potential deployment to Israel is speculative amid rising tensions. The Fordo site can produce highly enriched uranium rapidly, raising concerns over Iran's nuclear ambitions and highlighting the strategic significance of this advanced weapon.
The GBU-57/B, weighing 30,000 pounds, is the most powerful nonnuclear bomb designed to target fortified structures deep beneath the earth.
Iran's Fordo facility is shielded by 260 to 300 feet of rock and concrete, making traditional bombs insufficient to destroy its nuclear capabilities.
Read at www.scientificamerican.com
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