Elijah m Magnie#Israel used The GBU-28 - one of the most well-known bunker-busting bombs against the #Beirut (#Lebanon) assassination attack, penetrating two floors underground. Indeed, It can penetrate up to 6 meters (20 feet) of concrete or 30 meters (100 feet) of earth, making it suitable for destroying targets buried several floors underground.It uses a heavy, 5,000-pound warhead filled with high explosives and has a delayed fuse that allows it to penetrate deeply before detonation.The United States developed the bomb during the Gulf War. Israel has used the GBU-28 in various military operations to target fortified underground facilities.