RESTORATION METHOD OF DISTURBED LANDS AT OPEN DEVELOPMENT OF DEPOSITS OF MINERAL RESOURCES Russian patent published in 2012 - IPC E21C41/32 

FIELD: mining.

SUBSTANCE: method involves selective mining, movement and storage in separate soil wastes; at that, soil groups are laid periodically to the waste height of 2.5 m, at flattening of 25-35° waste boards. At that, lower part of the group which is 15-20 cm thick - low-fertile overburden rocks; middle part of the group which is 10-12 cm thick is laid with natural looser with fraction size of not more than 10 mm and upper part of the group is filled with organic fertiliser.

EFFECT: reduction of bioproductivity of clay soils and improvement of protection of recultivated soils against wind erosion.

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