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TVA’s hired-out analysis of the ash spill was under attack again on Wednesday.
Dan Marks, an expert witness for the plaintiffs in a lawsuit against TVA, said he doubts a “slimes layer” contributed to the disaster.
That was the theory put forth in a root-cause analysis conducted by Bill Walton of AECOM. Walton’s report said a slimes layer was one of the factors that led to the disaster.
“I’m not sure how to phrase this, really,” Marks said. “The problem I have with the report basically boils down to attempting to identify a so-called slimes layer.”
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