FIELD: mining, in particular, well hydraulic giants for hydraulic borehole mining of minerals. SUBSTANCE: well hydraulic giant includes body, barrel with nozzle, cutting nozzles with shutoff gates and gate control members made in the form of box-shaped structures with four posts on sides installed in guides. Side and end walls of box-shaped structures are located in slots of body. EFFECT: higher operating reliability of well hydraulic giant due to prevented getting of rock lumps and water component units of device. 16 cl, 6 dwg
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