Method and system for controlling earth pressure in tunnel borin

Method and system for performing attitude control of tunnel exca

Method for automatically adjusting the cutting drum position of

Method for controlling the thickness of a layer of material in a

Method for reducing porosity of rubblized oil shale

Method for remote control of a coal shearer

Method for sensing coal-rock interface

Method for the mining of coal and coal planer installation

Method of and apparatus for controlling advance of underground a

Method of and apparatus for steering a mining machine

Method of controlling the working motion of a cutting tool of a

Method of electro-hydraulic control of longwall mine units

Method of indirect measurement of cowl position on a longwall sh

Method of measuring uncut coal rib thickness in a mine

Method of mining coal seams at a defined preset depth of cutting

Method of monitoring and controlling mining operations

Method of separating the upper coal in seams

Method of steering a mining machine

Method of steering a mining machine

Method of surface mining