There was some conflicting reporting early on, but we’re any of the bunker busters dropped anywhere other than Fordow? I thought the other sites were just hit by submarine launched missiles.
The article says we did use bunker busters on natanz, which was news to me. Either way I think the only serious attempt to take out any underground facilities was Fordow.
The Natanz and Isfahan tunnels were built after the US developed the bunker buster and were designed to be too deep for it.