Abstract
Rock dumps of non-ferrous metallurgy enterprises formed during the development of mineral deposits are the most dangerous in relation to environmental pollution. They are characterized by the presence of sulfides, during the oxidation of which sulfuric acid is formed, and around the developed deposits extensive halos of scattering metal compounds are formed. On the example of a polymetallic enterprise producing and processing sulphide-containing carbonatized ores, a change in the properties of rocks transferred from depth to the day surface is considered. The studied rocks differ in lithological composition, weathering resistance, chemical and physical properties. They are characterized by different degrees of suitability for biological recultivation. Disadvantageous properties for plant growth are increased density and cementation of rocks, acidic reaction of the medium, high content of heavy metals. Features of recultivation of land disturbed during development of deposits are considered. It is concluded inappropriate to restore such a land for agricultural use. Forestry and sanitary and hygienic (environmental) areas of recultivation are highly recommended. It is permissible to leave certain areas of dumps with settled vegetation for self-healing.
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