Abstract: A borehole mining tool comprising a drill string having an inner pipe column and an outer pipe column. Water is forced under high pressure down an annulus between the outer pipe and inner pipe. A hydromonitor is attached to the end of the drill string. A nozzle in the hydromonitor directs the pressurized water into a stope or work area, thereby loosening the material to be mined. The slurry is educted from the mined area by the action of a venturi attached downstream of the hydromonitor. Water flow through the venturi creates a vacuum which draws the pregnant slurry from the work area up through the inner pipe to the surface. A plurality of tools may be attached to the hydromonitor by a connection comprising a gasket having an interference fit. The gasket allows quick connection and removal of a plurality of tools from the hydromonitor. A radar is include to provide an image of the stope being worked.