In the stone age world, there were always spear vs shield.But in knowledge world, that would not the whole picture.50meter concrete are very expensive,thus suggest a cheap solution.Build 50meter Top Soil with soft texture soil on top of hideout.Let the bomb blast at middle of soft texture soil.Ooop! Soft Texture Soil haven\'t been invent yet! No,You don\'t need to invent, engineering it yourself! It your guy need R&D reference, go to swamp area and start test drop bomb into mud, there you are. The soil mix with, wood chip,fiber soil stabilizer and most important the multiple layer stainless steel mesh.Place SST mesh with appropriate gap to decelerate drop speed and capture. The word is CAPTURE, capture the bomb before it reach hard surface. The bomb fail it not blast at high density surface.

200 feet of hardened concrete is a lot of penetration power, but what would happen if every 20 feet or so the concrete was covered with a layer of metal? Would multiple barriers such as this negate the effect of this bomb? Even without those layers, would this bomb be able to penetrate the under-mountain complex Iran allegedly has?

Great sir! i like army... my real brother is also in INDIAN NAVY... Very good jobs... health-today

Gee, aren\'t we all lucky the United States never attacks or invades another nation without a declaration of war and full international support.
Oh.

60 feet of hardened concrete or 200? Which one. The pictures are contradicting the article.

Gee, aren\'t we all lucky that full international support has stopped Iran and North Korea from attempting to develop nuclear weapons?
Boom.

But what use is this for? No sane politician would really want to kill his enemy fellow politicians. He needs them to rule the conquered country, or at least do kill one or two publicly to calm the masses.

@Tw Tan ,
You are exactly correct I also immediately thought of at least 3-ways to get around this 30K lb MOP, earthen works, metal mesh layers, even cheap lose gravel(tiny stones) layered with cheap metal mesh would render this MOP absolutely ineffective.
The thing about any weapon is understanding how it works what is the strongest link... then with some ingenuity turning that into the weakest link.
Sounds like this is more a wonder waffen... in other words military propaganda to scare the Iranians into submission than an actual feasible weapon, you would have to a modern version of Teslas best kept secrets to undo a \"nuclear power\" like North Korea or Iran.

ahhh they failed to state the weapon can be armed with a small tactical nuke it does not matter how deep the bunker is and it contains most of the fallout which you would have anyhow if your bombing a nuke site.

Christian and TW TAN: If it forces you to abandon your bunker and build a new one, it has already worked. Moreover, hardened concrete generally already has the kind of metal reinforcements you are describing in it.
As to the need for this, US forces have already encountered very heavily fortified underground bunkers during the Iraq war and in Afghanistan. Saddam Hussein\'s command bunker was under 60 feet of concrete, and existing munitions did not penetrate it.