The growth of open pit mining will entail an increase in the volume of waste rock stored in dumps. The largest **share of the** volume of extraction will **be accounted for by** large quarries developing deep parts of deposits. The annual volume of waste rocks at some enterprises will reach 20**–**100 million **m³** in loose condition by 2000, which will require additional areas for dumps **of** 2 to 9 thousand hectares per year. ...