Bunker buster bombs can go to varying depths depending on the model, from just under 2 feet with the BLU-109 to over 200 feet ...

The MOP was developed in the early 2000s as part of a DARPA-led effort created in response to the emergence of Iranian and North Korean fortified nuclear facilities.

Last weekend's strike on Iran's Fordow Fuel Enrichment Plant used 30,000-pound GBU-57 "massive ordnance penetrator" bombs. The design of those weapons and plans for attacking the site had ...

The video showed a GBU-57 series MOP (Massive Ordnance Penetrator) crashing into a target and kicking up a massive plume of dust moments before a blinding inferno appeared in a shaft during a test ...

This led to the development of the GBU-57, the Massive Ordnance Penetrator, designed specifically to defeat heavily fortified underground facilities.

A GBU-57 series Massive Ordnance Penetrator is seen crashing into a target. Picture: Department of Defense The 30,000-pound bunker-buster bombs demolish fortified targets deep underground.

A GBU-57 series Massive Ordnance Penetrator is seen crashing into a target. Picture: Department of Defense The 30,000-pound bunker-buster bombs demolish fortified targets deep underground.

Seven B-2 stealth aircraft dropped a total of 14 GBU-57 bunker-buster bombs on Iranian nuclear sites last weekend.

When the analysts realized they did not have a weapon to strike Fordo if needed, Caine said they teamed up with industry in a top-secret effort to build the Massive Ordnance Penetrator, or GBU-57 ...

The head of the Joint Chiefs of Staff, Gen. Dan Caine, showed a test video of a Massive Ordnance Penetrator (MOP), the bombs used in the strikes against Iran. The video was part of an incredibly ...