[ewing]

These are new weapons, I read an article about them in the London papers during the Afghan Tora Bora attack.

The Allied US and British military ( they were designed in the UK) has been testing them in Nevada, it appears that they have a small kiloton load (1-5) to prevent widespread radiation and that they have a device that will dig into the ground to seek the target and destroy it.

Thankfully the caves in Afghanistan didn't require the use of these weapons the Daisy Cutters did just fine.

[TommyDale]

Not only does this new generation "bunker buster" carry a small nuclear warhead, it is designed to explode downward,
leaving little or no trace of radiation above ground, but totally destroying everything in the underground bunker.

[metesky]

Thanks for the info, gentlemen.

Just another reason to love Free Republic.

[DBrow]

The B61-11 is a rehash of an older US warhead toughened up to withstand earth penetration. It has a dial-a-yield capability of between .3 and 300 kilotons depending on how it is set up and configured.

The OKC bomb was about .004 kilotons.