removable blade - Richmond group
- return stroke
- return tonnage
- return trades
- return water
- returned water
- returning plate
- returns
- retusoid
- retzian
- reuse
- revdinskite
- reverberation
- reverhead
- reversal
- reversal dipping
- reversal of dip
- reversal ventilation
- reverse
- reverse bearing
- reverse chute
- reverse circulation drilling
- reverse dip
- reverse face
- reverse gradient
- reverse laid rope
- reverse migration
- reverse moveout
- reverse penetration method
- reverse the face
- reverse the ventilation
- reverse the ventilation stream
- reverse-fault trap
- reverse-migrated time section
- reverse-time wavefiled continuation
- reversed arrangement
- reversed curvature
- reversed dip separation
- reversed fault
- reversed fault thrust
- reversed fish-tail bit