At the No. 1 reactor at Fukushima, they are having trouble keeping water on top of things because it’s leaking out the bottom where, as one utility manager put it according to Reuters:

“The fuel pellets likely melted and fell, and in the process may have damaged … the pressure vessel itself and created a hole,” …

Isn’t that what we call a melt-down?

The Telegraph has it:

One of the reactors at the crippled Fukushima Daiichi power plant did suffer a nuclear meltdown, Japanese officials admitted for the first time today, describing a pool of molten fuel at the bottom of the reactor’s containment vessel.

Not good. One question is, where did that molten fuel go after creating that hole?