Kind of a shaky video, but a few times through and you will begin to get a feel for just how extensive the damage there is. In reactor number three, you can see massive amounts of exposed rebar, indicating the concrete was blown right off the reinforcement rods of the containment vessel. Steam is coming from what appears, to me, to be the hole left where the containment cap blew off. It's kind of hard to make out clearly in this video. I believe the reactor vessel itself is exposed. If it wasn't, the recent videos of helicopters flying loads of seawater to dump on it would make no sense. They are dumping it right on the exposed reactor vessel and into what is left of the primary containment.
This is an accident that now is much worse then even Chernobyl. A major portion of the Japanese mainland has been rendered uninhabitable for the next 20,000 years of so. Dave