METHOD FOR UNDERWATER DEVELOPMENT OF MINERAL DEPOSITS Russian patent published in 1995 - IPC

FIELD: underwater development of mineral deposits. SUBSTANCE: after detecting boundaries 1 of developed district, direction of movement of drifts is determined. Direction 3 of advance of development is selected in direction of drift movement. Placer is worked through its entire thickness to open the placer bed. After working of area 4 to sizes not excluding the self-restoration of biocenoside associations, stoping operations are discontinued until restoration of natural productivity of water area within worked district. Further on, area 5 is worked, and following next interval of time, area 6 is worked. EFFECT: higher efficiency. 1 dwg