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Fly Ash Utilization In Indian Coal Mines

Considering 0.5 mg Bkg-1 soil as the critical level for B efficiency in soil, all Indian coal fly ashes are also rich in B. Keeping the toxic limit of B (4-10 mg B. kg-1 fly ash) as suggested by Townsend and Hodgson (1973) in view un-weathered sample of non-lignitic coal fly ash from Kanpur and weathered lignitic coal fly ash sample from Neyveli have toxic B concentration which may limit their ...

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