Mounting for receiving a mining pick bit
Mounting frame for linear impact ripper assembly
Mounting means for pick on mining drum vane
Mounting of a rotatable chisel in mining machinery
Mounting of cutter picks
Movable cutting machine
Movable device for openpit mining
Movable mining planer with direction responsive adjustable cutte
Movable rack system for longwall conveyor means
Movable seats
Multi-insert cutter bit
Multi-level hydraulic mining system
Multi-purpose mining machine
Multi-stage method of operating an in situ oil shale retort
Multiple branch well containing one producer and one injector we
Multiple jet hydrodemolition apparatus and method
Multiple jet hydrodemolition apparatus and method
Multiple level methane drainage method
Multiple level methane drainage shaft method
Multiple level preparation of oil shale retort