Variants of reclamation mixtures prepared in the way described in Part I of this study were tested on slopes (35^o) using rainfall of different intensity. It was confirmed that cellulose fibres as a component of mixtures constitute an effective ground-stabilising agent. Post-fermentation sludges from chromium-free tannery wastes and composts obtained from such wastes have a certain effect on the ground-stabilising capacity of mixtures. Sludges containing fibre protein and just a small amount of the lipid fraction (ee up to 20 g ∙ kg^-1 ds) inconsiderably reduce that capacity and only in the case when sludge is added in the amount exceeding 50% of the dry substance of mixture. Composts significantly decrease the ground-stabilising capacity of mixtures. Post-fermentation sludges from chromium-free tannery wastes and composts made of these wastes appear to be far more useful as an excellent fertilising and soil-forming agent for reclamation mixtures than sludges from municipal sewage, composts obtained from such sludges and green wastes, or other natural organic fertilisers tested before.

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