Mode and Mechanism
According to the AECOM report commissioned by TVA and released June 25, 2009, failure occurred due to a variety of causes, primarily due to liquefaction of layers of "slimes" and other water-saturated materials deep within the growing ash pile. Collapse occurred over the course of approximately one hour in consecutive waves of breaking away and sliding.
Read more about this topic: Kingston Fossil Plant Coal Fly Ash Slurry Spill
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