The development of bauxite deposits in the North Onega region by open pit mining has required the creation of significant external dumps. Currently observed deformations on the dumps reduce their capacity, reduce the efficiency of utilization of the areas allocated for dumps, complicate the system of mining.
In the open-pit mining of bauxite at the Tikhvin Alumina Plant, the erosion by surface and groundwater of the sandy–clayey and bauxite rocks composing the bench faces, working platforms, waste dumps, as well as the bottom and walls of drainage ditches, results in the pollution of mine waters.