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static, the H2O2 will eventually flow through the solids though at a much reduced rate, and the stratification just described will develop. As long as the unreacted H2O2 and WAD cyanide come in contact, the reaction will continue. WAD cyanide destruction using the INCO process will take place within the reaction vessels, not in the pond. Therefore, the problem of mixing within the tailings solids will not rise. Once the tailings ponds' cyanide concentrations appropriate low levels, and provided of course that t low, one complete cycling of the interstitial fluff tailings solids through the underdrain should remo~ cyanide from those interstitial fluids. In the case wherein WAD cyanide is being removed through the additi once the collection pond cyanide concentrations appropriate low levels, we should be able to safely virtually all of the WAD cyanide has been removed. Whet cyanide has been removed from the collection pond by sta INCO reactor will have no effect on its eventual remo~ the INCO process itself will remove the remainder, as ~ WAD cyanide produced in the future. I believe, still, that the greater probl problem - may be cytox-generated metallic solids. Whether the Zn cyanates will b< whether they will break down all at one break down slowly, none of this is kno~ tests on the CYTOX-affected tailings, predictions about the chemical stability cc: Humphries Oehler Sorenson Stevens HP/hp each the ey remain a in the the WAD efore us, ~ of HZO2, each the aume that :r the WAD .up of the 1 because 11 as any am - if there 's indeed a compounds in t e tailings stable into erpetuity, ;e, or whether they will rn. Until we ave leach we cannot mak informed of the tailin s. m:\min\hhp\tails.mem