......Currently, most penetrator bombs are heavier (910 kg) and models like the BLU-109 can penetrate five meters (16 feet) of concrete. The heavier (5,000 pound) GBU-28 can penetrate 32 meters (100 feet) of earth or six meters (20 feet) of concrete. Israel already has hundreds of these larger penetrator bombs but apparently sees a need for smaller penetrators. More of the smaller bombs can be carried on each sortie. There are smaller penetrators as well.......Quote from Lucrum:
Hmm, I never thought of that. But I guess you're right.
http://www.strategypage.com/htmw/htairw/20120221.aspx
The U.S. military or its contractors long ago released videos of bunker buster bombs. While the Israeli military has requested advanced bunker buster bombs from the United States, the Israelis have also been manufacturing its own technology. They recently released this impressive video depicting a new concrete-busting missile which would presumably obviate the need for aircraft to fly over certain targets.
http://www.commentarymagazine.com/2012/03/09/israel-bunker-buster-missile/
