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Commercial Gold Management Processing Fly Ash 2012

Commercial Gold Management Processing Fly Ash 2012

As of 2012 according to the American Coal Ash Association ACAA data approximately 50 percent of the CCRs beneficially used on an annual basis falls into two categories 1 fly ash used as a direct substitute for Portland cement during the production of concrete referred to as quotfly ash concretequot and 2 FGD gypsum used as a replacement for mined gypsum in wallboard referred to as quotFGD

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