Longwall mining roof support for double deck machines
Longwall mining system
Longwall mining system and archshield for mining tar sands, oil
Looped cable control device
Low profile mining machine
Low profile mining machine having a cutter mounted on a slidable
Lubricant pumping eccentric in floor stripping machine
Lubrication of oscillating head elements for floor stripping...
Machine for automatically removing temporary raised pavement...
Machine for cutting away road surfaces
Machine for cutting curbstones, sidewalks or the like
Machine for cutting curbstones, sidewalls and the like
Machine for cutting pavement
Machine for cutting pavement
Machine for driving workings in hard rocks
Machine for making underground galleries
Machine for mechanically advancing clean cut underground mining
Machine for mining tar sands having rearwardly directed exhaust
Machine for mining thin seamed hard material in-situ between adj
Machine for removal of materials from a surface