Beyond the complete meltdown of one of the nuclear reactors at the Fukushima Daiichi complex, two other reactors experienced partial meltdowns, the Tokyo Electric Power Company admitted today. Reactors 2 and 3, TEPCO says, melted down in the days after the quake and tsunami in March. The new announcement, which was apparently the result of retrieving "data from the central control room," confirms what international observers had believed. It came ahead of a visit by International Atomic Energy Agency investigators, who may shed more light on what happened at the plant when they release a report in June.