one is that tep co refused to use the term melt down at the time. the company operates the crippled nuclear plant. 772 interviews were conducted in 2011 and 2012 by a government committee that investigated the disaster. the testimony came mainly from government officials. 127 interviews were made public on thursday, after receiving consent from the participants. one is from an employee at the tepco headquarters. he analyzed conditions inside reactor in early april 2011. the worker said he thought the upper half of the nuclear fuel rods in the number 1 reactor core must have completely melted down. cooling water was only covering the lower half of the rods. he added he heard tepco feared that a misunderstanding could occur as there was no exact definition of the term "meltdown." nuclear fuel melted at the number 1, 2 and 3 reactors. but tepco only admitted the possibility of meltdowns in may 2011. >>> other testimonies highlight a failure to share key information. it a member of the task force said he was told his team would use the cooling seystem t