Efficiency assessment for open selective dredge mining

The dredging method used for alluvial deposits was analyzed. A sufficient amount of dredge reserves in the Russian Federation was emphasized. Factors preventing dredging from development were identified. The article identified the current trend to convert dredging reserves into the reserves for open selective mining with lower productivity and higher production costs. The article provide data on a deep placer site which can be mined using different methods. Various options for complex mechanization schemes which can be used for mining this site were described. According to economic criteria, the use of the open selective mining method with excavation of the most enriched sands was justified.