According to the pentagon briefing this morning they dropped 14. News is reporting that it was in 3 specific locations and they were dropped successively. Assuming most detonated successfully, that much specialized ordinance did some damage. This bomb was specifically designed for this very purpose and you have to realize that capabilities that are reported are probably pretty conservative vs what the bomb is actually capable of doing.

I know a bunch of armchair generals on here are speculating that this was ineffective, but time will tell.

Six spread across three sites, two on each site. I highly doubt the deepest site is out of commission.