Fukushima Gov. Masao Uchibori said on ... The fuel in the worst-damaged No. 1 reactor mostly fell from the core to the bottom of its primary containment vessel. Some of it penetrated and mixed ...

The concrete support foundation for a reactor whose core melted down at the Fukushima No. 1 nuclear power plant has deteriorated so much that reinforcing bars (rebars) are now exposed. Masao ...

TOKYO (AP) — Images taken by miniature drones from deep inside a badly damaged reactor at the Fukushima nuclear plant ... an area directly under the reactor's core. Officials had long hoped ...

A robot has begun its second attempt to extract melted nuclear fuel from one of the reactors at the Fukushima Daiichi power ... debris from closer to the core. The effort builds on a first trial ...

Longer term impact: Once the core is damaged and seawater is poured over reactors to cool them, Fukushima 1 (and possibly a plant in Tokai as well) will be useless beyond repair – hence a ...

Telesco on Wednesday successfully clipped a piece presumably measuring less than 3 grams (0.1 ounce) from the planned area right underneath the Unit 2 reactor core, from which large amounts of ...

Its location holds particular significance — a mere 9 kilometres from the Fukushima Daiichi Nuclear Power Plant, three reactors of which underwent partial meltdowns after the tsunami flooded ...

TEPCO President Tomoaki Kobayakawa visited Fukushima Governor Masao Uchibori ... which covers the reactor core, rose to a critical level at 3 of the 4 reactors. Only the number 3 reactor was ...

The operator of the crippled Fukushima Daiichi nuclear power plant has begun a second test to retrieve a small amount of nuclear fuel debris from one of the reactors. Tokyo Electric Power Company ...