Radial tool with superhard cutting surface
Railroad mounted trench digger
Ramp plate and loader for mineral conveyors
Reciprocably supported dual-drive member and features
Recovery for the restoration of mining residue parks
Recovery of bitumen by hydraulic excavation
Reduced volume cutting tip and cutter bit assembly...
Remote control system for mining machines
Remotely sensing of excavation cavity during mining
Residue recovery system
Retainer for holding mineral cutter in a tool-box
Retainer for rotatable bits
Reversible cutting tool with shield
Ring cutter for tunnel drilling in rock
Rock and coral demolition tool
Rock boring device
Rock breaker
Rock breaking apparatus
Rock cutting machine
Rock drill