Fly Ash A Hazardous Material? Precast .
Sounds like it''s a winwin for everyone – and it was until Dec. 22, 2008, when a containment dike ruptured at Kingston Fossil Plant near Kingston, Tenn., and sent billion gallons ( billion L) of coal fly ash slurry over 300 acres (122 hectares) of surrounding land, damaging homes and flowing into nearby rivers. This spill was the largest fly ash release in history. Cleanup ...