When the matter came up for hearing here, the Bench, comprising judicial member Justice M Chockalingam and expert member R Nagendran, said "circumstances did not permit us" to further hear the case.
"Since, the members of this Bench were not inclined to hear the case further, a request was made to the Chairperson of the Principal Bench to consider the appeal," they said.
The Bench further said the case has already been listed in the cause list of the Principal Bench today, adding, "the parties are directed to appear before the Principal Bench."
The Registry was also directed to transfer all matters relating to the case to the Principal Bench.
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When a lawyer sought to know the reasons behind the shifting, they said, "You cannot ask and we cannot say... There could be thousands of reasons."
However, the company had claimed its plant adhered to required safety norms.
The Tribunal had appointed a four-member committee, including top scientists from IIT Madras, to undertake a study of the plant.