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lowered the instrument. this suggests nuclear fuel melted down and collected theatbottom of the vessel. it also measured 72.9 seiferts per hour. a person exposed to those levels would die within about seven minutes. the technicians also learned that the water used to cool the reactor is only 60 centimeters deep. they thought the level was about three meters. tepco officials suspect the suppression chamber theatbottom of the vessel may have been destroyed. r two nuclear expert says thuny reactor may slow down the work theatfukushima daiichi plant. tepco's next jop is to find out wheth...

cool it was about three meters deep. they found the depth was only about 60 centimeters. the video shows the endoscope being lowered about six meters into the containment vessel, and reaching the water's surface. floating matter thought to be peeled paint and rust can be seen floating on top. the operator says the substances are not melted nuclear fuel. the technicians could not verify or identify areas of damage in the vessel but they did detect levels of radiation mesh tours 72,900 millisieverts her per hour. any human exposed to this amount would die within seven minutes. this is ...