Mining ultra thin coal seams
Mining unit of coal combines
Mobile adjustable curtain apparatus for use in room and pillar c
Mobile concrete or rock cutting apparatus
Mobile digging/cutting system
Mobile dual auger continuous mining machine with multiple moveme
Mobile machine suspension system
Mobile mining machine and method
Mobile mining machine having tilted swing axis and method
Modified rumble strip cutter
Modified strip mining apparatus
Modular hydraulic mining tool with slurry inlet metering
Modular impact ripper assembly
Molding pillars in underground mining of oil shale
Motorized floor stripper with adjustable motion
Mounting arrangement for cutter socket
Mounting arrangement for impact rock-breaker
Mounting block to rotate coal cutter bits
Mounting bracket for a working device
Mounting for material loading means in a mining tunnelling machi