ore-leaching tank7 - pad construction
- ore-picking
- ore-picking belt
- ore-shoot crest
- ore-surge bin
- orebody
- orebody delineation
- orebody geophysics
- oredelf
- oregenesis
- oregenetic
- oregenetical
- oregonite
- orendite
- oreodonts
- orepass
- orepass access
- ores as fillings
- ores as intense replacements
- organ
- organella
- organic
- organic debris
- organic deposits
- organic derivatives of sea water
- organic flocculent
- organic material
- organic matter
- organic nature
- organic production
- organic remains
- organic residue
- organic rocks
- organic solutes
- organic substance
- organic theory
- organism
- organogenic
- organogenous
- organogenous sediments
- organolite